Acetic anhydride

Product Name

Acetic anhydride, puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥99% (GC)

SMILES string

CC(=O)OC(C)=O

InChI key

WFDIJRYMOXRFFG-UHFFFAOYSA-N

InChI

1S/C4H6O3/c1-3(5)7-4(2)6/h1-2H3

grade

ACS reagent
puriss. p.a.

agency

USP/NF
reag. ISO
reag. Ph. Eur.

vapor density

3.5 (vs air)

vapor pressure

10 mmHg ( 36 °C)
4 mmHg ( 20 °C)

assay

≥99% (GC)

autoignition temp.

629 °F

expl. lim.

10.3 %

impurities

≤0.003% non-volatile matter
≤0.01% KMnO₄ red. matter (as O)

refractive index

n20/D 1.390 (lit.)

bp

138-140 °C (lit.)

mp

−73 °C (lit.)

density

1.08 g/mL (lit.)

anion traces

chloride (Cl^-): ≤2 mg/kg
phosphate (PO₄^3-): ≤10 mg/kg
sulfate (SO₄^2-): ≤5 mg/kg

cation traces

Al: ≤0.5 mg/kg
B: ≤0.02 mg/kg
Ba: ≤0.1 mg/kg
Ca: ≤0.5 mg/kg
Cd: ≤0.05 mg/kg
Co: ≤0.02 mg/kg
Cr: ≤0.05 mg/kg
Cu: ≤0.02 mg/kg
Fe: ≤0.1 mg/kg
Mg: ≤0.1 mg/kg
Mn: ≤0.02 mg/kg
Ni: ≤0.02 mg/kg
Pb: ≤0.1 mg/kg
Sn: ≤0.1 mg/kg
Zn: ≤0.2 mg/kg

suitability

passes test for reaction against H₂SO₄

Quality Level

200