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street name for lysergic acid diethylamide (同)back breaker, battery-acid, dose, dot, Elvis, loony toons, Lucy in the sky with diamonds, pane, superman, window pane, Zen
any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt
having the characteristics of an acid; "an acid reaction"

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酸性の / 酸味のある,すっぱい(sour) / (言葉・態度などが)厳しい,しんらつな / 酸 / すっぱいもの / 《俗》=LSD

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2013/12/10 22:06:36」(JST)

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Methacrylic acid, abbreviated MAA, is an organic compound. This colourless, viscous liquid is a carboxylic acid with an acrid unpleasant odor. It is soluble in warm water and miscible with most organic solvents. Methacrylic acid is produced industrially on a large scale as a precursor to its esters, especially methyl methacrylate (MMA) and poly(methyl methacrylate) (PMMA). The methacrylates have numerous uses, most notably in the manufacture of polymers with trade names such as Lucite and Plexiglas. MAA occurs naturally in small amounts in the oil of Roman chamomile.

Production and properties[edit]

More than 3 million tons of methyl methacrylate (MMA) are produced annually. In one route, acetone cyanohydrin is converted to methacrylamide sulfate using sulfuric acid. That compound is hydrolyzed to methacrylic acid, or it can be converted into methyl methacrylate in one step. In the second route, isobutylene or tert-butanol are oxidized to methacrolein, then methacrylic acid. Methacrolein for this purpose can also be obtained from formaldehyde and ethylene. Isobutyric acid can also be dehydrogenated to methacrylic acid.^[2]

Methacrylic acid was first obtained in the form of its ethyl ester by treating phosphorus pentachloride with oxyisobutyric ester.^[3] It is, however, more readily obtained by boiling citra- or meso-brompyrotartaric acids with alkalis. It crystallizes in prisms. When fused with an alkali, it forms propanoic acid. Sodium amalgam reduces it to isobutyric acid. A polymeric form of methacrylic acid was described in 1880.^[4]

References[edit]

^ CDC - NIOSH Pocket Guide to Chemical Hazards
^ William Bauer, Jr. "Methacrylic Acid and Derivatives" in Ullmann's Encyclopedia of Industrial Chemistry 2002, Wiley-VCH, Weinheim. doi:10.1002/14356007.a16_441. Article Online Posting Date: June 15, 2000
^ Edward Frankland Annalen, 1865, 136, p. 12
^ F. Engelhorn et al. Ann., 1880, 200, p. 70.

UpToDate Contents

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English Journal

Determination of phthalates in food packing materials by electrokinetic chromatography with polymeric pseudostationary phase.

Ni X1, Xing X2, Cao Y3, Cao G1.
Food chemistry.Food Chem.2016 Jan 1;190:386-91. doi: 10.1016/j.foodchem.2015.05.134. Epub 2015 Jun 1.
Polymeric pseudostationary phase (PSP), formed by random copolymer poly (stearyl methacrylate-co-methacrylic acid) (P(SMA-co-MAA)), was used in electrokinetic chromatography (EKC) to separate 15 kinds of phthalates (PAEs). The organic solvent modifier is a key factor for the separation of PAEs. With
PMID 26212987

Determination of Sudan I in paprika powder by molecularly imprinted polymers-thin layer chromatography-surface enhanced Raman spectroscopic biosensor.

Gao F1, Hu Y2, Chen D3, Li-Chan EC2, Grant E4, Lu X5.
Talanta.Talanta.2015 Oct 1;143:344-52. doi: 10.1016/j.talanta.2015.05.003. Epub 2015 May 9.
Sudan I is a carcinogenic and mutagenic azo-compound that has been utilized as a common adulterant in spice and spice blends to impart a desirable red color to foods. A novel biosensor combining molecularly imprinted polymers (MIPs), thin layer chromatography (TLC) and surface enhanced Raman spectro
PMID 26078169

Synthesis of a molecularly imprinted polymer for the isolation of 1-hydroxypyrene in human urine.

Serrano M1, Bartolomé M1, Gallego-Picó A2, Garcinuño RM1, Bravo JC1, Fernández P1.
Talanta.Talanta.2015 Oct 1;143:71-6. doi: 10.1016/j.talanta.2015.04.092. Epub 2015 May 8.
In the last decades, the assessment of polycyclic aromatic hydrocarbons' exposure has generated great interest and 1-hydroxypyrene (1-OHP) has been commonly used as a biological indicator of exposure to PAHs in many studies in environmental and occupational health. In this research, a molecularly im
PMID 26078130

Japanese Journal

Synthesis of pH-responsive polysilane with polyelectrolyte side chains through γ-ray-induced graft polymerization

Tanaka Hidenori,Kawade Yasushi,Sato Nobuhiro,Matsuyama Tomochika
Radiation Physics and Chemistry 81(2), 185-189, 2012-02
… In the first synthetic method, poly(methyl acrylate) is grafted onto poly(methyl-n-propylsilane) (PMPrS) through γ-ray-induced grafting, and then the PMA chains are hydrolyzed to poly(acrylic acid) resulting in the yield of ca. …
NAID 120003573894

N-ビニル-2-ピロリドン/メタクリル酸メチル/メタクリル酸三元共重合体被覆マグネタイトナノ粒子の調製と特性解析 (特集号新しい高分子・材料キャラクタリゼーション(2))

山城舞,杉村俊英,小林猛 [他]
高分子論文集 = Japanese journal of polymer science and technology 69(7), 392-398, 2012
NAID 40019394033

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★リンクテーブル★

リンク元	「メタクリル酸」「methacrylate」
関連記事	「methacrylic」「methacryl」

「メタクリル酸」

Methacrylic acid
	IUPAC name 2-methylpropenoic acid
	Other names MAA, 2-methyl-2-propenoic acid
Identifiers
CAS number	79-41-4
Jmol-3D images	Image 1
	SMILES CC(C(O)=O)=C ;
Properties
Molecular formula	C4H6O2
Molar mass	86.06 g/mol
Appearance	Colorless liquid or solid
Odor	Acrid
Density	1.015 g/cm3
Melting point	14 - 15 °C
Boiling point	161 °C
Hazards
NFPA 704	2 3 2
Flash point	77.2 °C
	(verify) (what is: /?); Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
	Infobox references