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27225-M

乙酸

Name: 乙酸
Brand: SIAL

puriss., meets analytical specification of Ph. Eur., BP, USP, 99.8-100.5%

别名:

冰乙酸

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关于此项目

线性分子式:

CH₃CO₂H

化学文摘社编号:

64-19-7

分子量:

60.05

UNSPSC Code:

12352106

NACRES:

NA.21

PubChem Substance ID:

329752986

EC Number:

200-580-7

Beilstein/REAXYS Number:

506007

MDL number:

MFCD00036152

Assay:

99.8-100.5%

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属性

agency

meets purity specifications of USP (identity)

Quality Level

100

vapor density

2.07 (vs air)

grade

puriss.

assay

99.8-100.5%

autoignition temp.

800 °F

quality

meets analytical specification of Ph. Eur., BP, USP

expl. lim.

16 %, 92 °F, 4 %, 59 °F

technique(s)

mass spectrometry (MS): suitable

impurities

K₂Cr₂O₇ red. substances, complies, residual solvents, complies, ≤0.0002% heavy metals (as Pb), ≤0.01% KMnO₄ red. matter (as HCOOH)

evapn. residue

≤0.005%

refractive index

n20/D 1.371 (lit.)

bp

117-118 °C (lit.)

mp

16.2 °C (lit.)

transition temp

freezing point ≥15.6 °C

density

1.04 g/mL at 25 °C (lit.)

anion traces

chloride (Cl^-): ≤0.0002%, sulfate (SO₄^2-): ≤0.0005%

cation traces

Al: ≤0.00005%, Cu: ≤0.0005%, Fe: ≤0.0002%, Pb: ≤0.00005%, Zn: ≤0.0005%

suitability

corresponds for appearance

SMILES string

[F2C(F2C)13F3C]C(O)=O

InChI

1S/C2H4O2/c1-2(3)4/h1H3,(H,3,4)

InChI key

QTBSBXVTEAMEQO-UHFFFAOYSA-N

说明

General description

Acetic acid is an organic carboxylic acid. It is a hygroscopic liquid having pungent odor. Its anhydrous form is commonly referred as glacial acetic acid. It forms dimers linked by hydrogen bonds in solution and gaseous phases. It is weakly acidic in nature.

Application

Acetic acid is widely employed as solvent for various oxidation reactions. It may be used in the analysis of synthetic peptides by electron transfer dissociation (ETD) tandem mass spectrometry (MS/MS). It may be used in the preparation of peroxyacetic acid (disinfectant), via reaction with perhydrol (30% hydrogen peroxide).

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pictograms

GHS02,GHS05

signalword

Danger

hcodes

H226,H314

pcodes

P210 - P233 - P240 - P280 - P303 + P361 + P353 - P305 + P351 + P338

Hazard Classifications

Eye Dam. 1 - Flam. Liq. 3 - Skin Corr. 1A

存储类别

3 - Flammable liquids

flash_point_f

104.0 °F - closed cup

flash_point_c

40 °C - closed cup

法规信息

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Peptide and protein sequence analysis by electron transfer dissociation mass spectrometry.

John E P Syka et al.

Proceedings of the National Academy of Sciences of the United States of America, 101(26), 9528-9533 (2004-06-24)

Peptide sequence analysis using a combination of gas-phase ion/ion chemistry and tandem mass spectrometry (MS/MS) is demonstrated. Singly charged anthracene anions transfer an electron to multiply protonated peptides in a radio frequency quadrupole linear ion trap (QLT) and induce fragmentation