695092

Sigma-Aldrich

Acetic acid

glacial, ACS reagent, ≥99.7%

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

Quality Level

grade

ACS reagent

vapor density

2.07 (vs air)

vapor pressure

11.4 mmHg ( 20 °C)

assay

≥99.7%

form

liquid

autoignition temp.

800 °F

expl. lim.

16 %, 92 °F
4 %, 59 °F

application(s)

mass spectrometry (MS): suitable

impurities

Cr2O72- reducers, passes test
MnO4- reducers, passes test
≤0.0004 meq/g Titr. base
≤0.01% acetic anhydride

evapn. residue

≤0.001%

color

APHA: ≤10

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.)

density

1.049 g/mL at 25 °C (lit.)

anion traces

chloride (Cl-): ≤1 ppm
sulfate (SO42-): ≤1 ppm

cation traces

Fe: ≤0.2 ppm
heavy metals: ≤0.5 ppm (by ICP)

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 pungent smelling hygroscopic liquid. Glacial acetic acid is the anhydrous acetic acid. It forms dimers linked by hydrogen bonds in solution and gaseous commonly referred as 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).

Packaging

100, 4×100 mL in poly bottle
6×500 mL in poly bottle
6×2.5 L in glass bottle
500 mL in glass bottle
2 L in glass bottle
500 mL in poly bottle
2.5 L in poly bottle
6×2.5, 4, 4×4 L in poly bottle
6×500 mL in glass bottle

Other Notes

4L and 4X4L are packaged in poly bottles

Pictograms

FlameCorrosion

Signal Word

Danger

Hazard Statements

hazcat

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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