- 関
- hydrobromide、hydrogen bromide
WordNet
- 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"
PrepTutorEJDIC
- 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
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2014/07/07 19:44:49」(JST)
[Wiki en表示]
| Hydrobromic acid |
|
| Identifiers |
| CAS number |
10035-10-6 Y |
| PubChem |
260 |
| ChemSpider |
255 Y |
| EC number |
233-113-0 |
| ChEBI |
CHEBI:47266 Y |
| RTECS number |
MW3850000 |
| Jmol-3D images |
Image 1 |
|
|
-
InChI=1S/BrH/h1H Y
Key: CPELXLSAUQHCOX-UHFFFAOYSA-N Y
InChI=1/BrH/h1H
Key: CPELXLSAUQHCOX-UHFFFAOYAZ
|
| Properties |
| Molecular formula |
HBr |
| Molar mass |
80.91 |
| Appearance |
colorless/faint yellow liquid |
| Odor |
acrid |
| Density |
1.49 g/cm3 (48% w/w aq.) |
| Melting point |
-11 °C (47–49% w/w aq.) |
| Boiling point |
122 °C at 700 mmHg (47–49% w/w aq.) |
| Solubility in water |
221 g/100 mL (0 °C)
204 g/100 mL (15 °C)
130 g/100 mL (100 °C) |
| Acidity (pKa) |
−9[1] |
| Viscosity |
0.84 cP (-75 °C) |
| Thermochemistry |
Specific
heat capacity C |
29.1 J/K mol |
Std molar
entropy So298 |
198.7 J/K mol |
Std enthalpy of
formation ΔfHo298 |
-36.3 kJ/mol |
| Hazards |
| MSDS |
ICSC 0282 |
| EU Index |
035-002-01-8 |
| EU classification |
Corrosive (C) |
| R-phrases |
R34, R37 |
| S-phrases |
(S1/2), S7/9, S26, S45 |
| NFPA 704 |
|
| Flash point |
Non-flammable |
| Related compounds |
| Other anions |
Hydrofluoric acid
Hydrochloric acid
Hydroiodic acid |
| Related compounds |
Hydrogen bromide |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa) |
| Y (verify) (what is: Y/N?) |
| Infobox references |
|
|
Hydrobromic acid is a strong acid formed by dissolving the diatomic molecule hydrogen bromide (HBr) in water. "Constant boiling" hydrobromic acid is an aqueous solution that distills at 124.3 °C and contains 47.6% HBr by weight, which is 8.89 mol/L. Hydrobromic acid has a pKa of −9, making it a stronger acid than hydrochloric acid, but not as strong as hydroiodic acid. Hydrobromic acid is one of the strongest mineral acids known.
Contents
- 1 Uses
- 2 Syntheses
- 3 References
- 4 External links
Uses
Hydrobromic acid is mainly used for the production of inorganic bromides, especially the bromides of zinc, calcium, and sodium. It is a useful reagent for generating organobromine compounds. Certain ethers are cleaved with HBr. It also catalyzes alkylation reactions and the extraction of certain ores. Industrially significant organic compounds prepared from hydrobromic acid include allyl bromide, tetrabromobis(phenol), and bromoacetic acid.[2]
Syntheses
Hydrobromic acid can be prepared in the laboratory via the reaction of Br2, SO2, and water.[3]
- Br2 + SO2 + 2 H2O → H2SO4 + 2 HBr
More typically laboratory preparations involve the production of anhydrous HBr, which is then dissolved in water.
Hydrobromic acid has commonly been prepared industrially by reacting bromine with either sulfur or phosphorus and water. However, it can also be produced electrolytically.[3] It can also be prepared by treating bromides with non-oxidising acids like phosphoric or acetic acids.
Alternatively the acid can be prepared with dilute (5.8M) sulfuric acid and potassium bromide:[4]
- H2SO4 + KBr → KHSO4 + HBr
Using more concentrated sulfuric acid or allowing the reaction solution to exceed 75°C further oxidizes HBr to bromine gas. The acid is further purified by filtering out the KHSO4 and by distilling off the water until the solution reaches an azeotrope (≈ 126°C at 760 torr). The yield is approximately 85%.[4]
Hydrobromic acid is available commercially in various concentrations and purities.
References
- ^ Bell, R.P. The Proton in Chemistry, 2nd ed., Cornell University Press, Ithaca, NY, 1973.
- ^ Dagani, M. J.; Barda, H. J.; Benya, T. J.; Sanders, D. C. (2005), "Bromine Compounds", Ullmann's Encyclopedia of Industrial Chemistry, Weinheim: Wiley-VCH, doi:10.1002/14356007.a04_405
- ^ a b Scott, A. (1900). "Preparation of Pure Hydrobromic Acid". Journal of the Chemical Society, Transactions 77: 648–651. doi:10.1039/ct9007700648.
- ^ a b Brauer, Georg (1963). Handbook of Preparative Inorganic Chemistry Vol. 1, 2nd Ed.. Newyork: Academic Press. p. 285. ISBN 978-0121266011.
External links
Media related to Hydrogen bromide at Wikimedia Commons
- International Chemical Safety Card 0282
- NIOSH Pocket Guide to Chemical Hazards
- Carlin, W. W. U.S. Patent 4,147,601
UpToDate Contents
全文を閲覧するには購読必要です。 To read the full text you will need to subscribe.
English Journal
- Formation of nanogaps in InAs nanowires by selectively etching embedded InP segments.
- Schukfeh MI1, Storm K, Hansen A, Thelander C, Hinze P, Beyer A, Weimann T, Samuelson L, Tornow M.
- Nanotechnology.Nanotechnology.2014 Nov 21;25(46):465306. doi: 10.1088/0957-4484/25/46/465306. Epub 2014 Oct 31.
- We present a method to fabricate nanometer scale gaps within InAs nanowires by selectively etching InAs/InP heterostructure nanowires. We used vapor-liquid-solid grown InAs nanowires with embedded InP segments of 10-60 nm length and developed an etching recipe to selectively remove the InP segment.
- PMID 25360747
- How covalent heme to protein bonds influence the formation and reactivity of redox intermediates of a bacterial peroxidase.
- Auer M1, Nicolussi A1, Schütz G1, Furtmüller PG2, Obinger C3.
- The Journal of biological chemistry.J Biol Chem.2014 Nov 7;289(45):31480-91. doi: 10.1074/jbc.M114.595157. Epub 2014 Sep 22.
- The most striking feature of mammalian peroxidases, including myeloperoxidase and lactoperoxidase (LPO) is the existence of covalent bonds between the prosthetic group and the protein, which has a strong impact on their (electronic) structure and biophysical and chemical properties. Recently, a nove
- PMID 25246525
- Orbital compartment syndrome in a burn patient without aggressive fluid resuscitation.
- Hurst J1, Johnson D, Campbell R, Baxter S, Kratky V.
- Orbit (Amsterdam, Netherlands).Orbit.2014 Oct;33(5):375-7. doi: 10.3109/01676830.2014.881400. Epub 2014 Apr 2.
- INTRODUCTION: Orbital compartment syndrome may rarely occur in the setting of burns where therapy includes aggressive fluid resuscitation.CASE: We report a case of bilateral orbital compartment syndrome in a 13-year-old male, with superficial facial burns secondary to hydrobromic acid, who did not r
- PMID 24694219
Japanese Journal
- SYNTHESIS OF ISOTHIOCHROMENES AND 1,3-DIHYDROBENZO[c]THIOPHENES BY IODINE- AND HYDROBROMIC ACID-MEDIATED CYCLIZATIONS OF o-[(tert-BUTYLSULFANYL)METHYL)]STYRENES
- Heterocycles : an international journal for reviews and communications in heterocyclic chemistry 94(11), 2065-2079, 2017-11-01
- NAID 40021396319
- 木材構成成分の酸性条件下での化学反応におけるカウンターアニオンの役割
- SYNTHESIS OF 7H-THIOPYRANO[2,3-d]PYRIMIDINES BY HYDROBROMIC ACID-MEDIATED CYCLIZATION OF 1-[4-(1,1-DIMETHYLETHYLSULFANYL)PYRIMIDIN-5-YL]PROP-2-EN-1-OLS
- Heterocycles : an international journal for reviews and communications in heterocyclic chemistry 87(4), 885-895, 2013-04-01
- NAID 40019622027
Related Links
- [Hydrobromic Acid] [10035-10-6] | 価格や在庫、物性値などの詳細情報ページです。 ... ・川口の在庫は即日，つくばの在庫は2〜3日以内の出荷となります。・詳細につきましては，お手数ですが営業部までお問い合わせください。
- Hydrobromic acid definition, a colorless or faintly yellow corrosive liquid, HBr, an aqueous solution of hydrogen bromide. See more. Thesaurus Translate Puzzles & Games Word of the Day Blog Slideshows Apps by Dictionary ...
★リンクテーブル★
[★]
臭化水素酸
- 関
- hydrobromic acid、hydrogen bromide
[★]
- 英
- hydrobromic acid、hydrobromide、hydrogen bromide
[★]
臭化水素酸
- 関
- hydrobromic acid、hydrobromide