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27225

Sigma-Aldrich

Acetic acid

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

Synonym(s):
Glacial acetic acid
Linear Formula:
CH3CO2H
CAS Number:
Molecular Weight:
60.05
Beilstein:
506007
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

Quality Level

Agency/Method

corresponds to USP (identity)

vapor density

2.07 (vs air)

grade

puriss.

assay

99.8-100.5%

form

liquid

autoignition temp.

800 °F

quality

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

expl. lim.

16 %, 92 °F
4 %, 59 °F

application(s)

mass spectrometry (MS): suitable

impurities

K2Cr2O7 red. substances, complies
residual solvents, complies
≤0.0002% heavy metals (as Pb)
≤0.005% non-volatile matter
≤0.01% KMnO4 red. matter (as HCOOH)

refractive index

n20/D 1.371 (lit.)

pH

2.5 (20 °C, 50  g/L)

bp

117-118 °C (lit.)

mp

16.2 °C (lit.)

transition temp

freezing point ≥15.6 °C

density

1.049 g/mL at 25 °C (lit.)

anion traces

chloride (Cl-): ≤2 mg/kg
sulfate (SO42-): ≤5 mg/kg

cation traces

Al: ≤0.5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤2 mg/kg
Pb: ≤0.5 mg/kg
Zn: ≤5 mg/kg

suitability

corresponds for appearance

SMILES string

CC(O)=O

InChI

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

InChI key

QTBSBXVTEAMEQO-UHFFFAOYSA-N

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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).

Other Notes

The article number 27225-4X2.5L-M will be discontinued. Please order the single bottle 27225-2.5L-M which is physically identical with the same exact specifications.
The article number 27225-4X2.5L-R will be discontinued. Please order the single bottle 27225-2.5L-R which is physically identical with the same exact specifications.
The article number 27225-6X1L-M will be discontinued. Please order the single bottle 27225-1L-M which is physically identical with the same exact specifications.
The article number 27225-6X1L-R will be discontinued. Please order the single bottle 27225-1L-R which is physically identical with the same exact specifications.

pictograms

FlameCorrosion

signalword

Danger

Hazard Classifications

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

Storage Class Code

3 - Flammable liquids

WGK Germany

WGK 1

Flash Point F

102.2 °F

Flash Point C

39 °C

Certificate of Analysis

Certificate of Origin

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