関: methanol

WordNet

a light volatile flammable poisonous liquid alcohol; used as an antifreeze and solvent and fuel and as a denaturant for ethyl alcohol (同)methyl_alcohol, wood_alcohol, wood_spirit
any of a series of volatile hydroxyl compounds that are made from hydrocarbons by distillation
a liquor or brew containing alcohol as the active agent; "alcohol (or drink) ruined him" (同)alcoholic drink, alcoholic_beverage, intoxicant, inebriant
the univalent radical CH3- derived from methane (同)methyl_group, methyl radical

PrepTutorEJDIC

=methyl alcohol
『アルコール』,酒精 / 『アルコール飲料』,酒

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/11/25 05:19:09」(JST)

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Methanol, also known as methyl alcohol, wood alcohol, wood naphtha, methyl hydrate, or wood spirits, is a chemical with the formula CH₃OH (often abbreviated MeOH). Methanol acquired the name "wood alcohol" because it was once produced chiefly as a byproduct of the destructive distillation of wood. Modern-day methanol production occurs in a catalytic industrial process directly from carbon monoxide, carbon dioxide, and hydrogen.

Methanol is the simplest alcohol, and is a light, volatile, colorless, flammable liquid with a distinctive odor very similar to that of ethanol (drinking alcohol).^[10] However, unlike ethanol, methanol is highly toxic and unfit for consumption. At room temperature, it is a polar liquid, and is used as an antifreeze, solvent, fuel, and as a denaturant for ethanol. It is also used for producing biodiesel via transesterification reaction.

Methanol is produced naturally in the anaerobic metabolism of many varieties of bacteria, and is commonly present in small amounts in the environment. As a result, there is a small fraction of methanol vapor in the atmosphere. Over the course of several days, atmospheric methanol is oxidized with the help of sunlight to carbon dioxide and water.

Methanol also forms in abundant quantities in star forming regions of space, and is used in astronomy as a marker for such regions. It is detected through its spectral emission lines.^[11]

Methanol burns in oxygen, including open air, forming carbon dioxide and water:

2 CH₃OH + 3 O₂ → 2 CO₂ + 4 H₂O

Methanol ingested in large quantities is metabolized first to formaldehyde and then to formic acid^[12] or formate salts, which is poisonous to the central nervous system, and may cause blindness, coma, and death. Because of these toxic properties, methanol is frequently used as a denaturant additive for ethanol manufactured for industrial uses. This addition of methanol exempts industrial ethanol (commonly known as "denatured alcohol" or "methylated spirit") from liquor excise taxation in the US and some other countries.

1 Occurrence
- 1.1 Human metabolite
2 Toxicity
3 Applications
- 3.1 Chemical industry
- 3.2 Fuel for vehicles
- 3.3 Government policy
- 3.4 Other applications
- 3.5 Energy carrier
- 3.6 Safety in automotive fuels
4 Production
- 4.1 From synthesis gas
- 4.2 Other
- 4.3 Feedstocks
  - 4.3.1 Production of synthesis gas
    - 4.3.1.1 Stoichiometry adjustment
    - 4.3.1.2 Alternate feedstock materials
5 Quality specifications and analysis
- 5.1 Methanol for laboratory use
- 5.2 Commercial methanol
6 History
7 See also
8 References
9 Further reading
10 External links

Occurrence

Human metabolite

Methanol is poisonous to the central nervous system and may cause blindness, coma, and death. However, in small amounts, methanol is a natural endogenous compound found in normal, healthy human individuals, concluded by one study which found a mean of 4.5 ppm in the exhaled breath of the subjects.^[13] The mean endogenous methanol in humans of 0.45 g/d may be metabolized from pectin found in fruit; one kilogram of apple produces up to 1.4 g methanol.^[14]

Toxicity

Methanol has a high toxicity in humans. If as little as 10 mL of pure methanol is ingested, for example, it can break down into formic acid, which can cause permanent blindness by destruction of the optic nerve, and 30 mL is potentially fatal,^[15] although the median lethal dose is typically 100 mL (3.4 fl oz) (i.e. 1–2 mL/kg body weight of pure methanol^[16]). Reference dose for methanol is 2 mg/kg/day.^[17] Toxic effects take hours to start, and effective antidotes can often prevent permanent damage.^[15] Because of its similarities in both appearance and odor to ethanol (the alcohol in beverages), it is difficult to differentiate between the two (such is also the case with denatured alcohol). However, there are cases of methanol resistance, such as that of Mike Malloy, who was the victim of a failed murder attempt by methanol in the early 1930s.^[18]

Methanol is toxic by two mechanisms. First, methanol (whether it enters the body by ingestion, inhalation, or absorption through the skin) can be fatal due to its CNS depressant properties in the same manner as ethanol poisoning. Second, in a process of toxication, it is metabolized to formic acid (which is present as the formate ion) via formaldehyde in a process initiated by the enzyme alcohol dehydrogenase in the liver.^[19] Methanol is converted to formaldehyde via alcohol dehydrogenase (ADH) and formaldehyde is converted to formic acid (formate) via aldehyde dehydrogenase (ALDH). The conversion to formate via ALDH proceeds completely, with no detectable formaldehyde remaining.^[20] Formate is toxic because it inhibits mitochondrial cytochrome c oxidase, causing the symptoms of hypoxia at the cellular level, and also causing metabolic acidosis, among a variety of other metabolic disturbances.^[21]

Methanol poisoning can be treated with fomepizole, or if unavailable, ethanol.^[19]^[22]^[23] Both drugs act to reduce the action of alcohol dehydrogenase on methanol by means of competitive inhibition, so it is excreted by the kidneys rather than being transformed into toxic metabolites.^[19] Further treatment may include giving sodium bicarbonate for metabolic acidosis, and hemodialysis or hemodiafiltration can be used to remove methanol and formate from the blood.^[19] Folinic acid or folic acid is also administered to enhance the metabolism of formate.^[19]

The initial symptoms of methanol intoxication include central nervous system depression, headache, dizziness, nausea, lack of coordination, and confusion. Sufficiently large doses can cause unconsciousness and death. The initial symptoms of methanol exposure are usually less severe than the symptoms resulting from the ingestion of a similar quantity of ethanol.^[10] Once the initial symptoms have passed, a second set of symptoms arises, 10 to as many as 30 hours after the initial exposure to methanol, including blurring or complete loss of vision, acidosis and putaminal hemorrhages, an uncommon but serious complication.^[19]^[24] These symptoms result from the accumulation of toxic levels of formate in the blood, and may progress to death by respiratory failure. Physical examination may show tachypnea, and ophthalmologic examination may show dilated pupils with hyperemia of the optic disc and retinal edema.

Ethanol is sometimes denatured (adulterated), and made poisonous, by the addition of methanol. The result is known as methylated spirit, "meths" (British use) or "metho" (Australian slang). These are not to be confused with "meth", a common abbreviation for methamphetamine, and an abbreviation for methadone in Britain.

Small amounts of methanol are produced by the metabolism of food and are generally harmless, being metabolized quickly and completely.

Applications

Methanol is used primarily as a feedstock for the manufacture of chemicals, and as a fuel for specialized vehicles. It has a number of other uses, for example as a de-naturing agent, or as a solvent. As a common laboratory solvent, is especially useful for HPLC, UV/VIS spectroscopy, and LCMS due to its low UV cutoff.

Chemical industry

The largest use of methanol by far is in making other chemicals. About 40% of methanol is converted to formaldehyde, and from there into products as diverse as plastics, plywood, paints, explosives, and permanent press textiles.

Also in the early 1970s, a methanol to gasoline process was developed by Mobil for producing gasoline ready for use in vehicles. One such industrial facility was built at Motunui in New Zealand in the 1980s. In the 1990s, large amounts of methanol were used in the United States to produce the gasoline additive methyl tert-butyl ether (MTBE). While MTBE is no longer marketed in the U.S., it is still widely used in other parts of the world. In addition to direct use as a fuel, methanol (or less commonly, ethanol) is used as a component in the transesterification of triglycerides to yield a form of biodiesel.

Other chemical derivatives of methanol include dimethyl ether, which has replaced chlorofluorocarbons as an aerosol spray propellant, and acetic acid. Dimethyl ether (DME) also can be blended with liquified petroleum gas (LPG) for home heating and cooking, and can be used as a diesel replacement for transportation fuel.

Methanol-to-Olefins/Methanol-to-Propylene (MTO/MTP), among others processes such as: Metathesis, Propane Dehydrogenation (PDH), High Severity FCC, and Olefins Cracking, is a new and novel lower-cost chemical process for on-purpose propylene production technology of high interest to the petrochemical marketplace, to supply the tight market for propylene.

The market became tight because of the ethane prices falling in the USA, due to the exploration of shale gas reserves. The low price ethylene produced from this raw material has given chemical producers in North America a feedstock advantage. Such change has put naphtha-fed steam crackers at a disadvantageous position, with many of them shutting down or revamping to use ethane as feedstock. Nevertheless, the propylene output rates from ethane-fed crackers are negligible.^[25]

Fuel for vehicles

Methanol is used on a limited basis to fuel internal combustion engines. Pure methanol is required by rule to be used in Champcars, Monster Trucks, USAC sprint cars (as well as midgets, modifieds, etc.), and other dirt track series, such as World of Outlaws, and Motorcycle Speedway. Methanol is also used, as the primary fuel ingredient since the late 1940s, in the powerplants for radio control, control line and free flight airplanes (as methanol is required in the engines that primarily power them), cars and trucks, from such an engine's use of a platinum filament glow plug being able to ignite the methanol vapor through a catalytic reaction. Drag racers and mud racers, as well as heavily modified tractor pullers, also use methanol as their primary fuel source. Methanol is required with a supercharged engine in a Top Alcohol Dragster and, until the end of the 2006 season, all vehicles in the Indianapolis 500 had to run methanol. Mud racers have mixed methanol with gasoline with nitrous oxide to produce more power than mixing gasoline and nitrous oxide alone.

One of the potential drawbacks of using high concentrations of methanol (and other alcohols, such as ethanol) in fuel is the corrosivity to some metals of methanol, particularly to aluminium. Methanol, although a weak acid, attacks the oxide coating that normally protects the aluminum from corrosion:

6 CH₃OH + Al₂O₃ → 2 Al(OCH₃)₃ + 3 H₂O

The resulting methoxide salts are soluble in methanol, resulting in a clean aluminium surface, which is readily oxidized by dissolved oxygen. Also, the methanol can act as an oxidizer:

6 CH₃OH + 2 Al → 2 Al(OCH₃)₃ + 3 H₂

This reciprocal process effectively fuels corrosion until either the metal is eaten away or the concentration of CH₃OH is negligible. Concerns with methanol's corrosivity have been addressed by using methanol-compatible materials, and fuel additives that serve as corrosion inhibitors.

When produced from wood or other organic materials, the resulting organic methanol (bioalcohol) has been suggested as renewable alternative to petroleum-based hydrocarbons. Low levels of methanol can be used in existing vehicles, with the use of proper cosolvents and corrosion inhibitors.

Methanol fuel has been proposed for ground transportation. The chief advantage of a methanol economy is that it could be adapted to present internal combustion engines with a minimum of modification in both engines and infrastructure to store and deliver liquid fuel.

Government policy

The European Fuel Quality Directive allows up to 3% methanol with an equal amount of cosolvent to be blending in gasoline sold in Europe. China uses more than one billion gallons of methanol per year as a transportation fuel in both low level blends used in existing vehicles, and as high level blends in vehicles designed to accommodate the use of methanol fuels.

In the US in 2011, the Open Fuel Standard Act of 2011 was introduced in the US Congress to encourage car manufacturers to warrant their cars to burn methanol as a fuel in addition to gasoline and ethanol. The bill is being championed by the Open Fuel Standard Coalition.^{[citation needed]}

Other applications

Methanol is a traditional denaturant for ethanol, the product being known as "denatured alcohol" or "methylated spirit". This was commonly used during the Prohibition to discourage consumption of bootlegged liquor, and ended up causing several deaths.^[26]

Methanol is also used as a solvent, and as an antifreeze in pipelines and windshield washer fluid.

In some wastewater treatment plants, a small amount of methanol is added to wastewater to provide a carbon food source for the denitrifying bacteria, which convert nitrates to nitrogen to reduce the nitrification of sensitive aquifers.

During World War II, methanol was used as a fuel in several German military rocket designs, under the name M-Stoff, and in a roughly 50/50 mixture with hydrazine, known as C-Stoff.

Methanol was used as an automobile coolant antifreeze in the early 1900s.^[27]

Methanol is used as a destaining agent in polyacrylamide gel electrophoresis.

Direct-methanol fuel cells are unique in their low temperature, atmospheric pressure operation, allowing them to be miniaturized to an unprecedented degree.^[28]^[29] This, combined with the relatively easy and safe storage and handling of methanol, may open the possibility of fuel cell-powered consumer electronics, such as for laptop computers and mobile phones.^[30]

Methanol is also a widely used fuel in camping and boating stoves. Methanol burns well in an unpressurized burner, so alcohol stoves are often very simple, sometimes little more than a cup to hold fuel. This lack of complexity makes them a favorite of hikers who spend extended time in the wilderness. Similarly, the alcohol can also be gelled to reduce risk of leaking or spilling, as with the brand "Sterno".

Methanol is mixed with water and injected into high performance diesel and gasoline engines for an increase of power and a decrease in intake air temperature in a process known as water methanol injection.

Energy carrier

Methanol is also useful as an energy carrier. It is easier to store than hydrogen and burns cleaner than fossil fuels.

Methanol is readily biodegradable in both aerobic (oxygen present) and anaerobic (oxygen absent) environments. Methanol will not persist in the environment. The half-life for methanol in groundwater is just one to seven days, while many common gasoline components have half-lives in the hundreds of days (such as benzene at 10–730 days). Since methanol is miscible with water and biodegradable, it is unlikely to accumulate in groundwater, surface water, air or soil.^[31]

Safety in automotive fuels

Pure methanol has been used in open wheel auto racing since the mid-1960s. Unlike petroleum fires, methanol fires can be extinguished with plain water. A methanol-based fire burns invisibly, unlike gasoline, which burns with a visible flame. If a fire occurs on the track, there is no flame or smoke to obstruct the view of fast approaching drivers, but this can also delay visual detection of the fire and the initiation of fire suppression. The decision to permanently switch to methanol in American IndyCar racing was a result of the devastating crash and explosion at the 1964 Indianapolis 500, which killed drivers Eddie Sachs and Dave MacDonald.^[32] In 2007 IndyCars switched to ethanol.^[33]

Production

From synthesis gas

Carbon monoxide and hydrogen react over a catalyst to produce methanol. Today, the most widely used catalyst is a mixture of copper and zinc oxides, supported on alumina, as first used by ICI in 1966. At 5–10 MPa (50–100 atm) and 250 °C (482 °F), the reaction is characterized by high selectivity (>99.8%):

CO + 2 H₂ → CH₃OH

Since the production of synthesis gas from methane produces three moles of hydrogen for every mole of carbon monoxide, whereas the synthesis consumes only two moles of hydrogen gas per mole of carbon monoxide. One way of dealing with the excess hydrogen is to inject carbon dioxide into the methanol synthesis reactor, where it, too, reacts to form methanol according to the equation:

CO₂ + 3 H₂ → CH₃OH + H₂O

In terms of mechanism, the process occurs via iniatial conversion of CO into CO₂, which is then hydrogenated:^[34]

CO₂ + 3 H₂ → CH₃OH + H₂O

where the H₂O byproduct is recycled via the water-gas shift reaction

CO + H₂O → CO₂ + H₂,

This gives an overall reaction, which is the same as listed above.

CO + 2 H₂ → CH₃OH

Other

The catalytic conversion of methane to methanol has long been sought as a route to methanol. This route is effected by enzymes such as methane monooxygenases but commercial routes remain elusive because of the tendency for over-oxidation, i.e., methanol is more readily oxidized than is methane.^[35]^[36]

Feedstocks

Production of synthesis gas

Originally, synthesis gas for the production of methanol came from coal. Today, synthesis gas is most commonly produced from the methane component in natural gas, because natural gas contains hydrogen. Three processes are commercially practiced. At moderate pressures of 4 MPa (40 atm) and high temperatures (around 850 °C), methane reacts with steam on a nickel catalyst to produce syngas according to the chemical equation:

CH₄ + H₂O → CO + 3 H₂

This reaction, commonly called steam-methane reforming or SMR, is endothermic, and the heat transfer limitations place limits on the size of and pressure in the catalytic reactors used. Methane can also undergo partial oxidation with molecular oxygen (at atmospheric pressure) to produce syngas, as the following equation shows:

2 CH₄ + O₂ → 2 CO + 4 H₂

This reaction is exothermic, and the heat given off can be used in-situ to drive the steam-methane reforming reaction. When the two processes are combined, it is referred to as autothermal reforming. The high pressures and high temperatures needed for steam-reforming require a greater capital investment in equipment than is needed for a simple partial-oxidation process; however, the energy-efficiency of steam-reforming is higher than for partial-oxidation, unless the waste-heat from partial-oxidation is used.

Stoichiometry adjustment

Stoichiometry for methanol production requires the ratio of H₂ / CO to equal 2. The partial oxidation process yields a ratio of 2, and the steam reforming process yields a ratio of 3. The H₂ / CO ratio can be lowered to some extent by the reverse water-gas shift reaction,

CO₂ + H₂ → CO + H₂O,

to provide the appropriate stoichiometry for methanol synthesis.

Alternate feedstock materials

Although natural gas is the most economical and widely used feedstock for methanol production, many other feedstocks can be used to produce syngas via steam reforming.^[37] Steam-reformed coal is sometimes used as a feedstock for methanol production, particularly in China. In addition, mature technologies available for biomass gasification are being used for methanol production. For instance, woody biomass can be gasified to water gas (a hydrogen-rich syngas), by introducing a blast of steam in a blast furnace. The water-gas / syngas can then be synthesized to methanol using standard methods. The net process is carbon neutral, since the CO₂ byproduct is required to produce biomass via photosynthesis. Using a composition for wood of 50% carbon, 42% oxygen, 6% hydrogen^[38] we can represent wood with the formula C₁₁H₁₆O₇ (we could also use C₈H₁₂O₅). Then some combination of the following two formal reactions will occur:

3 C₁₁H₁₆O₇ + 22 H₂O → 46 H₂ + 23 CO + 10 CO₂ → 23 CH₃OH + 10 CO₂

2 C₁₁H₁₆O₇ + 11 O₂ → 16 H₂ + 8 CO + 14 CO₂ → 8 CH₃OH + 14 CO₂

Quality specifications and analysis

Methanol for laboratory use

Methanol is available commercially in various purity grades for fine chemicals: 1) “Synthesis” quality (corresponding to normal commercial methanol) 2) Certified analytical quality 3) Extremely pure qualities for semiconductor manufacture

Commercial methanol

In addition to laboratory grades, commercial methanol is generally classified according to ASTM purity grades A and AA. Methanol for chemical use normally corresponds to Grade AA. In addition to water, typical impurities include acetone (which is very difficult to separate by distillation) and ethanol. When methanol is delivered by ships or tankers used to transport other substances, contamination by the previous cargo must be expected. Comparative ultraviolet spectroscopy has proved a convenient, quick test method for deciding whether a batch can be accepted and loaded. Traces of all chemicals derived from aromatic parent substances, as well as a large number of other compounds, can be detected. Further tests for establishing the quality of methanol include measurements of boiling point range, density, permanganate number, turbidity, color index, and acid number. More comprehensive tests include water determination according to the Karl Fischer method and gas chromatographic determination of byproducts. However, the latter is relatively expensive and time consuming because several injections using different columns and detectors must be made due to the variety of byproducts present.

History

In their embalming process, the ancient Egyptians used a mixture of substances, including methanol, which they obtained from the pyrolysis of wood. Pure methanol, however, was first isolated in 1661 by Robert Boyle, when he produced it via the distillation of buxus (boxwood).^[39] It later became known as "pyroxylic spirit". In 1834, the French chemists Jean-Baptiste Dumas and Eugene Peligot determined its elemental composition.^[40]

They also introduced the word "methylene" to organic chemistry, forming it from Greek methy = "wine" + hȳlē = wood (patch of trees), with Greek language errors: "wood (substance)" (Greek ξύλον, xylon) was intended, and the components are in the wrong order for Greek. The term "methyl" was derived in about 1840 by back-formation from "methylene", and was then applied to describe "methyl alcohol". This was shortened to "methanol" in 1892 by the International Conference on Chemical Nomenclature.^[41] The suffix -yl used in organic chemistry to form names of carbon groups, was extracted from the word "methyl".

In 1923, the German chemists Alwin Mittasch and Mathias Pier, working for Badische-Anilin & Soda-Fabrik(BASF), developed a means to convert synthesis gas (a mixture of carbon monoxide, carbon dioxide, and hydrogen) into methanol. US patent 1,569,775 was applied for on 4 Sep 1924 and issued on 12 January 1926; the process used a chromium and manganese oxide catalyst with extremely vigorous conditions—pressures ranging from 50 to 220 atm, and temperatures up to 450 °C. Modern methanol production has been made more efficient through use of catalysts (commonly copper) capable of operating at lower pressures. The modern low pressure methanol (LPM) was developed by ICI in the late 1960s US 3326956 with the technology now owned by Johnson Matthey, which is a leading licensor of methanol technology.

Methanol is one of the most heavily traded chemical commodities in the world, with an estimated global demand of around 27 to 29 million metric tons. In recent years, production capacity has expanded considerably, with new plants coming on-stream in South America, China and the Middle East, the latter based on access to abundant supplies of methane gas. Even though nameplate production capacity (coal-based) in China has grown significantly, operating rates are estimated to be as low as 50 to 60%. No new production capacity is scheduled to come on-stream until 2015.

The main applications for methanol are the production of formaldehyde (used in construction and wooden boarding), acetic acid (basis for a.o. PET-bottles), MTBE (fuel component and replacement for the very volatile diethyl ether) and more recently for the formation of methyl esters in the production of bio-diesel. In China, demand is expected to grow exponentially, not only caused by a growing internal market of the traditional applications, but accelerated by new applications, such as direct blending (with gasoline), Methanol-To-Olefins (e.g. propylene) and DME. Methanol can also be used to produce gasoline.

The use of methanol as a motor fuel received attention during the oil crises of the 1970s due to its availability, low cost, and environmental benefits. By the mid-1990s, over 20,000 methanol "flexible fuel vehicles" capable of operating on methanol or gasoline were introduced in the U.S. In addition, low levels of methanol were blended in gasoline fuels sold in Europe during much of the 1980s and early-1990s. Automakers stopped building methanol FFVs by the late-1990s, switching their attention to ethanol-fueled vehicles. While the methanol FFV program was a technical success, rising methanol pricing in the mid- to late-1990s during a period of slumping gasoline pump prices diminished the interest in methanol fuels.^[42]

In 2006, astronomers using the MERLIN array of radio telescopes at Jodrell Bank Observatory discovered a large cloud of methanol in space, 288 billion miles across.^[43]^[44]

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^ Barette, Jean-Pierre; Hazard, Claude and Mayer, Jérôme (1996). Mémotech Bois et Matériaux Associés. Paris: Éditions Casteilla. p. 22. ISBN 27135-1645-5.
^ Boyle discusses the distillation of liquids from the wood of the box shrub in: Robert Boyle, The Sceptical Chymist (London, England: J. Cadwell, 1661), pp. 192–195.
^ A report on methanol to the French Academy of Sciences by J. Dumas and E. Péligot began during the Academy's meeting of October 27, 1834 and finished during the meeting of November 3, 1834. See: Procès-verbaux des séances de l'Académie, 10 : 600–601. Available on: Gallica. The complete report appears in: J. Dumas and E. Péligot (1835) "Mémoire sur l'espirit de bois et sur les divers composés ethérés qui en proviennent" (Memoir on spirit of wood and on the various ethereal compounds that derive therefrom), Annales de chimie et de physique, 58 : 5–74; from page 9: Nous donnerons le nom de méthylène (1) à un radical … (1) Μεθυ, vin, et υλη, bois; c'est-à-dire vin ou liqueur spiritueuse du bois. (We will give the name "methylene" (1) to a radical … (1) methy, wine, and hulē, wood; that is, wine or spirit of wood.)
^ For a report on the International Conference on Chemical Nomenclature that was held in April 1892 in Geneva, Switzerland, see:
- Lockyer, Sir Norman; Lockyer, J; Kirby, F; Sargeant, J; Fleet, L; Wright, D (1892). "Nature". Nature 46 (1177): 240–5. Bibcode:1892Natur..46...56A. doi:10.1038/046056c0. PMID 16042519.
- Armstrong's report is reprinted with the resolutions in English in: Armstrong, Henry; Lockyer, J; Kirby, F; Sargeant, J; Fleet, L; Wright, D (1892). "The International Conference on Chemical Nomenclature". The Journal of Analytical and Applied Chemistry 6 (1177): 390–400. Bibcode:1892Natur..46...56A. doi:10.1038/046056c0. PMID 16042519. p. 398: 15. The alcohols and the phenols will be called after the name of the hydrocarbon from which they are derived, terminated with the suffix ol (ex. pentanol, pentenol, etc.).
^ Halderman, James D.; Martin, Tony (2009). Hybrid and alternative fuel vehicles. Pearson/Prentice Hall. ISBN 978-0-13-504414-8.
^ "Upgraded MERLIN spies cloud of alcohol spanning 288 billion miles" (Press release). Jodrell Bank Centre for Astrophysics. 19 April 2006.
^ Amos, Jonathan (5 April 2006). "Merlin sees vast alcohol stream". BBC News.

External links

International Chemical Safety Card 0057
The Methanol Institute Industry trade group, lots of information on methanol's use in fuel cells and as an alternative fuel.
Methyl Alcohol (Methanol) CDC/NIOSH, links to safety information
CDC – NIOSH Pocket Guide to Chemical Hazards – Methyl Alcohol
China Takes Gold in Methanol Fuel
The methanol story: a sustainable fuel for the future article by Ford Motor's Roberta Nichols, the mother of the flexible fuel vehicle, discussing Gasoline-Ethanol-Methanol flexibility in the Journal of Scientific & Industrial Research
Methanol Fact Sheet – National Pollutant Inventory
Methanol Discovered in Space
Calculation of vapor pressure, liquid density, dynamic liquid viscosity, surface tension of methanol

UpToDate Contents

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1. メタノールおよびエチレングリコール中毒methanol and ethylene glycol poisoning [show details]
…annually, and even relatively small ingestions of these alcohols can produce significant toxicity. Rapid recognition and early treatment, including alcohol dehydrogenase inhibition, are crucial. A summary table …
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…and social history from the patient family or NOK, if available, including a history of smoking, alcohol consumption, and use of nonprescription drugs. The patient travel history should also be reviewed…
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… of alcohol or a reduction from chronically elevated concentrations results in decreased inhibitory tone. Glutamate is one of the major excitatory amino acids. When glutamate binds to the N-methyl-D-aspartate …
5. 小児の聴覚障害：病因hearing loss in children etiology [show details]
…medications, or toxins that have a teratogenic effect on the developing ear of the fetus (eg, alcohol, methyl mercury, quinine, trimethadione, retinoic acid, and maternal thyroid peroxidase autoantibodies)…

English Journal

Classification of red wines using suitable markers coupled with multivariate statistic analysis.

Geana EI1, Popescu R2, Costinel D2, Dinca OR2, Ionete RE2, Stefanescu I2, Artem V3, Bala C4.
Food chemistry.Food Chem.2016 Feb 1;192:1015-24. doi: 10.1016/j.foodchem.2015.07.112. Epub 2015 Jul 23.
Methodologies for chemometric classification of five authentic red wine varieties from Murfatlar wine center, Romania, young and aged are reported. The discriminant analysis based on several anthocyanins, organic acids, (13)C/(12)C, (18)O/(16)O and D/H isotopic ratios, (1)H and (13)C NMR fingerprint
PMID 26304442

Comparative study of biological activities and phytochemical composition of two rose hips and their preserves: Rosa canina L. and Rosa arvensis Huds.

Nađpal JD1, Lesjak MM1, Šibul FS1, Anačkov GT2, Četojević-Simin DD3, Mimica-Dukić NM1, Beara IN4.
Food chemistry.Food Chem.2016 Feb 1;192:907-14. doi: 10.1016/j.foodchem.2015.07.089. Epub 2015 Jul 23.
The aim of this study was to compare phenolic profile, vitamin C content, antioxidant, anti-inflammatory and cytotoxic activity of rose hips and the preserves (purée and jam) of two Rosa species: renowned Rosa canina L. and unexplored Rosa arvensis Huds. The liquid chromatography-tandem mass spectr
PMID 26304428

Maillard conjugation of lactulose with potentially bioactive peptides.

Nooshkam M1, Madadlou A2.
Food chemistry.Food Chem.2016 Feb 1;192:831-6. doi: 10.1016/j.foodchem.2015.07.094. Epub 2015 Jul 23.
Milk ultrafiltration permeate was heated at 97°C in the presence of eggshell for 60min. This decreased the ash content of permeate and converted ≈17% of lactose to lactulose. The isomerized permeate was subsequently purified to a lactulose-rich product (LRP; ≈70% lactulose content to total suga
PMID 26304417

Japanese Journal

Pd/TiO2-Photocatalyzed Self-Condensation of Primary Amines To Afford Secondary Amines at Ambient Temperature

Wang Lyu-Ming,Kobayashi Kensuke,Arisawa Mitsuhiro,Saito Susumu,Naka Hiroshi
Organic Letters 21(2), 341-344, 2019-01-18
ファイル公開：2020-01-18
NAID 120006623817

3-2-3 半流通反応器を用いた水添加超臨界メタノール処理による木質バイオマスからのケミカルス生産

姚依林,南英治,河本晴雄
日本エネルギー学会大会講演要旨集 28(0), 76-77, 2019
… Coniferyl alcohol and its<i> … γ</i>-methyl ether were obtained from lignin in high yield and selectivity.</p> …
NAID 130007685978

二酸化炭素を原料とするウレタンの合成

崔準哲,深谷訓久
日本接着学会誌 55(5), 175-180, 2019
<p>二酸化炭素（ CO2），アミンと金属アルコキシド化合物から芳香族ウレタンを合成する簡単なワンポットハロゲンフリーの方法を開発した。本反応に用いる金属アルコキシド化合物は，反応後に得られる金属残留物とアルコールとの反応から再生することができる。芳香族アミンであるアニリンを用い，CO2 （5 MPa）とチタンメトキシド（Ti（OMe）4）とを反応させたところ，わずか20 分で生成 …
NAID 130007660487

Related Pictures

★リンクテーブル★

リンク元	「メチルアルコール」「sodium methoxide」「carbinol」
関連記事	「alcohol」

「メチルアルコール」

Methanol
Names
	Systematic IUPAC name Methanol
	Other names Carbinol; Columbian spirits; Hydroxymethane; Methyl alcohol; Methyl hydrate; Methyl hydroxide; Methylic alcohol; Methylol; Pyroligneous spirit; Wood alcohol; Wood naphtha; Wood spirit
Identifiers
CAS Number	67-56-1
3DMet	B01170
Beilstein Reference	1098229
ChEBI	CHEBI:17790
ChEMBL	ChEMBL14688
ChemSpider	864
EC Number	200-659-6
Gmelin Reference	449
	InChI InChI=1S/CH4O/c1-2/h2H,1H3 Key: OKKJLVBELUTLKV-UHFFFAOYSA-N ; InChI=1/CH4O/c1-2/h2H,1H3 Key: OKKJLVBELUTLKV-UHFFFAOYAX ;
Jmol interactive 3D	Image
KEGG	D02309
MeSH	Methanol
PubChem	887
RTECS number	PC1400000
	SMILES CO ;
UNII	Y4S76JWI15
UN number	1230
Properties
Chemical formula	CH; 3OH
Molar mass	32.04 g mol−1
Appearance	Colorless liquid
Density	0.792 g·cm−3
Melting point	−97.6 °C (−143.7 °F; 175.6 K)
Boiling point	64.7 °C (148.5 °F; 337.8 K)
log P	-0.69
Vapor pressure	13.02 kPa (at 20 °C)
Acidity (pKa)	15.5
Refractive index (nD)	1.33141
Viscosity	0.545 mPa×s (at 25 °C)
Dipole moment	1.69 D
Hazards
Safety data sheet	See: data page
EU classification (DSD)	F T
R-phrases	R11, R23/24/25, R39/23/24/25
S-phrases	(S1/2), S7, S16, S36/37, S45
NFPA 704	3 1 0
Flash point	11 to 12 °C (52 to 54 °F; 284 to 285 K)
Autoignition; temperature	470 °C (878 °F; 743 K)
Explosive limits	6%-36%
	Lethal dose or concentration (LD, LC):
LD50 (Median dose)	5628 mg/kg (rat, oral); 7300 mg/kg (mouse, oral); 12880 mg/kg (rat, oral); 14200 mg/kg (rabbit, oral)
LC50 (Median concentration)	64,000 ppm (rat, 4 hr)
LCLo (Lowest published)	33,082 ppm (cat, 6 hr); 37,594 ppm (mouse, 2 hr)
	US health exposure limits (NIOSH):
PEL (Permissible)	TWA 200 ppm (260 mg/m3)
REL (Recommended)	TWA 200 ppm (260 mg/m3) ST 250 ppm (325 mg/m3) [skin]
IDLH (Immediate danger	6000 ppm
Related compounds
Related compounds	Methanethiol; Silanol
Supplementary data page
Structure and; properties	Refractive index (n),; Dielectric constant (εr), etc.
Thermodynamic; data	Phase behaviour; solid–liquid–gas
Spectral data	UV, IR, NMR, MS
	verify (what is ?)
	Infobox references

　　[★]

英: methyl alcohol
関: カルビノール、メタノール、ナトリウムメトキシド

「sodium methoxide」

　　[★]

ナトリウムメトキシド

関: carbinol、methanol、methyl alcohol

「carbinol」

　　[★]

カルビノール

関: methanol、methyl alcohol、sodium methoxide

「alcohol」

　　[★] アルコール

関: ethanol

[1] "Methanol". The PubChemProject. USA: National Center for Biotechnology Information.

[2] Lide, D. R., ed. (2005). CRC Handbook of Chemistry and Physics (86th ed.). Boca Raton (FL): CRC Press. ISBN 0-8493-0486-5.

[3] Ballinger, P.; Long, F.A. (1960). "Acid Ionization Constants of Alcohols. II. Acidities of Some Substituted Methanols and Related Compounds". J. Am. Chem. Soc. 82 (4): 795–798. doi:10.1021/ja01489a008.

[4] Refractive index of Methanol, CH3OH (MeOH) [LIQUIDS] – RefractiveIndex.INFO

[5] González, Begoña (2007). "Density, dynamic viscosity, and derived properties of binary mixtures of methanol or ethanol with water, ethyl acetate, and methyl acetate at T = (293.15, 298.15, and 303.15) K". The Journal of Chemical Thermodynamics 39 (12): 1578–1588. doi:10.1016/j.jct.2007.05.004.

[6] ttp://www.methanol.org/Health-And-Safety/Safety-Resources/Health---Safety/Methanex-TISH-Guide.aspx

[PGCH-7] "NIOSH Pocket Guide to Chemical Hazards #0397". National Institute for Occupational Safety and Health (NIOSH).

[IDLH-8] "Methanol". Immediately Dangerous to Life and Health. National Institute for Occupational Safety and Health (NIOSH).

[9] "The Emergency Response Safety and Health Database: Systematic Agent: METHANOL". Centers for Disease Control and Prevention. Retrieved 26 August 2009.

[ershdb-10] National Institute for Occupational Safety and Health (22 August 2008). "The Emergency Response Safety and Health Database: Methanol". Retrieved 17 March 2009.

[11] Brooks Hays (17 April 2015). "Why astronomers hate the lawn-mowing Roomba". Space Daily.

[12] Barceloux, D. G.; Bond, G. R.; Krenzelok, E. P.; Cooper, H; Vale, J. A.; American Academy of Clinical Toxicology Ad Hoc Committee on the Treatment Guidelines for Methanol Poisoning (2002). "American Academy of Clinical Toxicology practice guidelines on the treatment of methanol poisoning". Journal of toxicology. Clinical toxicology 40 (4): 415–46. PMID 12216995.

[13] Turner, C; Spanel, P; Smith, D (2006). "A longitudinal study of methanol in the exhaled breath of 30 healthy volunteers using selected ion flow tube mass spectrometry, SIFT-MS". Physiological Measurement 27 (7): 637–48. doi:10.1088/0967-3334/27/7/007. PMID 16705261.

[14] Lindinger, W; Taucher, J; Jordan, A; Hansel, A; Vogel, W (1997). "Endogenous production of methanol after the consumption of fruit". Alcoholism, clinical and experimental research 21 (5): 939–43. PMID 9267548.

[Vale-15] Vale A (2007). "Methanol". Medicine 35 (12): 633–4. doi:10.1016/j.mpmed.2007.09.014.

[16] "Methanol Poisoning Overview". Antizol. Archived from the original on 5 October 2011.

[17] Methanol (CASRN 67-56-1)

[18] Blum, Deborah (2011). The Poisoner's Handbook. Penguin Books. p. 231. ISBN 014311882X.

[Schep-19] ^ ^a ^b ^c ^d ^e ^f Schep LJ, Slaughter RJ, Vale JA, Beasley DM (2009). "A seaman with blindness and confusion". BMJ 339: b3929. doi:10.1136/bmj.b3929. PMID 19793790.

[noCHOH-20] McMartin KE, Martin-Amat G, Noker PE, Tephly TR (1979). "Lack of a role for formaldehyde in methanol poisoning in the monkey". Biochem. Pharmacol. 28 (5): 645–9. doi:10.1016/0006-2952(79)90149-7. PMID 109089.

[21] Liesivuori J, Savolainen H (September 1991). "Methanol and formic acid toxicity: biochemical mechanisms". Pharmacol. Toxicol. 69 (3): 157–63. doi:10.1111/j.1600-0773.1991.tb01290.x. PMID 1665561.

[22] Casavant MJ (Jan 2001). "Fomepizole in the treatment of poisoning". Pediatrics 107 (1): 170–171. doi:10.1542/peds.107.1.170. PMID 11134450.

[Brent-23] Brent J (May 2009). "Fomepizole for ethylene glycol and methanol poisoning". N Engl J Med 360 (21): 2216–23. doi:10.1056/NEJMct0806112. PMID 19458366.

[24] Permpalung N, Cheungpasitporn W, Chongnarungsin D, Hodgdon TM (Oct 2013). "Bilateral putaminal hemorrhages: serious complication of methanol intoxication". N Am J Med Sci 5 (10): 623–4. doi:10.4103/1947-2714.120804. PMC 3842708. PMID 24350079.

[Technology_Economics_Program-25] "Propylene Production from Methanol". by Intratec, ISBN 978-0-615-64811-8.

[26] Blum, Deborah (19 February 2010). "The little-told story of how the U.S. government poisoned alcohol during Prohibition". Slate Magazine. Retrieved 10 June 2010.

[27] Yant, W. P.; Schrenk, H. H.; Sayers, R. R. (1931). "Methanol Antifreeze and Methanol Poisoning". Industrial & Engineering Chemistry 23 (5): 551. doi:10.1021/ie50257a020.

[28] Kamitani, A.; Morishita, S.; Kotaki, H.; Arscott, S. (2008). "Miniaturized microDMFC using silicon microsystems techniques: Performances at low fuel flow rates". Journal of Micromechanics and Microengineering 18 (12): 125019. doi:10.1088/0960-1317/18/12/125019.

[29] Kamitani, A.; Morishita, S.; Kotaki, H.; Arscott, S. (2011). "Microfabricated microfluidic fuel cells". Sensors and Actuators B: Chemical 154 (2): 174. doi:10.1016/j.snb.2009.11.014.

[30] Berger, Sandy (30 September 2006). "Methanol Laptop Fuel". Compu·Kiss. Retrieved 22 May 2007.

[31] Evaluation of the Fate and Transport of Methanol in the Environment, Malcolm Pirnie, Inc., January 1999.

[32] McDonald, Norris (21 April 2007). "Green no longer bad luck at Indy". Toronto Star. Retrieved 12 May 2010.

[33] "IndyCar Series Teams Begin Use of Ethanol-Blended Fuel". Indycar.com. 1 December 2005. Retrieved 7 November 2010.

[34] Olaf Deutschmann, Helmut Knözinger, Karl Kochloefl, Thomas Turek "Heterogeneous Catalysis and Solid Catalysts, 3. Industrial Applications" in Ullmann's Encyclopedia of Industrial Chemistry" 2012, Wiley-VCH, Weinheim. doi:10.1002/14356007.o05_o03

[Alayon-35] Alayon, E. M. C.; Nachtegaal, M.; Ranocchiari, M.; Van Bokhoven, J. A. (2012). "Catalytic Conversion of Methane to Methanol Using Cu-Zeolites". CHIMIA International Journal for Chemistry 66 (9): 668–674. doi:10.2533/chimia.2012.668. PMID 23211724.

[Catalytic_and_Mechanic_Insights-36] Hammond, C.; Jenkins, R. L.; Dimitratos, N.; Lopez-Sanchez, J. A.; Ab Rahim, M. H.; Forde, M. M.; Thetford, A.; Murphy, D. M.; Hagen, H.; Stangland, E. E.; Moulijn, J. M.; Taylor, S. H.; Willock, D. J.; Hutchings, G. J. (2012). "Catalytic and Mechanistic Insights of the Low-Temperature Selective Oxidation of Methane over Cu-Promoted Fe-ZSM-5". Chemistry - A European Journal 18 (49): 15735. doi:10.1002/chem.201202802. PMID 23150452.

[37] Methanol Basics. afdc.energy.gov

[38] Barette, Jean-Pierre; Hazard, Claude and Mayer, Jérôme (1996). Mémotech Bois et Matériaux Associés. Paris: Éditions Casteilla. p. 22. ISBN 27135-1645-5.

[39] Boyle discusses the distillation of liquids from the wood of the box shrub in: Robert Boyle, The Sceptical Chymist (London, England: J. Cadwell, 1661), pp. 192–195.

[40] A report on methanol to the French Academy of Sciences by J. Dumas and E. Péligot began during the Academy's meeting of October 27, 1834 and finished during the meeting of November 3, 1834. See: Procès-verbaux des séances de l'Académie, 10 : 600–601. Available on: Gallica. The complete report appears in: J. Dumas and E. Péligot (1835) "Mémoire sur l'espirit de bois et sur les divers composés ethérés qui en proviennent" (Memoir on spirit of wood and on the various ethereal compounds that derive therefrom), Annales de chimie et de physique, 58 : 5–74; from page 9: Nous donnerons le nom de méthylène (1) à un radical … (1) Μεθυ, vin, et υλη, bois; c'est-à-dire vin ou liqueur spiritueuse du bois. (We will give the name "methylene" (1) to a radical … (1) methy, wine, and hulē, wood; that is, wine or spirit of wood.)

[41] For a report on the International Conference on Chemical Nomenclature that was held in April 1892 in Geneva, Switzerland, see:

Lockyer, Sir Norman; Lockyer, J; Kirby, F; Sargeant, J; Fleet, L; Wright, D (1892). "Nature". Nature 46 (1177): 240–5. Bibcode:1892Natur..46...56A. doi:10.1038/046056c0. PMID 16042519.

Armstrong's report is reprinted with the resolutions in English in: Armstrong, Henry; Lockyer, J; Kirby, F; Sargeant, J; Fleet, L; Wright, D (1892). "The International Conference on Chemical Nomenclature". The Journal of Analytical and Applied Chemistry 6 (1177): 390–400. Bibcode:1892Natur..46...56A. doi:10.1038/046056c0. PMID 16042519. p. 398: 15. The alcohols and the phenols will be called after the name of the hydrocarbon from which they are derived, terminated with the suffix ol (ex. pentanol, pentenol, etc.).

[42] Lockyer, Sir Norman; Lockyer, J; Kirby, F; Sargeant, J; Fleet, L; Wright, D (1892). "Nature". Nature 46 (1177): 240–5. Bibcode:1892Natur..46...56A. doi:10.1038/046056c0. PMID 16042519.

[43] Armstrong's report is reprinted with the resolutions in English in: Armstrong, Henry; Lockyer, J; Kirby, F; Sargeant, J; Fleet, L; Wright, D (1892). "The International Conference on Chemical Nomenclature". The Journal of Analytical and Applied Chemistry 6 (1177): 390–400. Bibcode:1892Natur..46...56A. doi:10.1038/046056c0. PMID 16042519. p. 398: 15. The alcohols and the phenols will be called after the name of the hydrocarbon from which they are derived, terminated with the suffix ol (ex. pentanol, pentenol, etc.).

[42] Halderman, James D.; Martin, Tony (2009). Hybrid and alternative fuel vehicles. Pearson/Prentice Hall. ISBN 978-0-13-504414-8.

[43] "Upgraded MERLIN spies cloud of alcohol spanning 288 billion miles" (Press release). Jodrell Bank Centre for Astrophysics. 19 April 2006.

[44] Amos, Jonathan (5 April 2006). "Merlin sees vast alcohol stream". BBC News.

匿名

検索

案内

methyl alcohol