Definition

Sodium diacetate is a molecular compound of sodium acetate and acetic acid

Chemical name

Sodium hydrogen diacetate

Einecs

204-814-9

Chemical formula

C₄H₇NaO₄·nH₂O (n = 0 or 3)

Molecular weight

142,09 (anhydrous)

Assay

Content 39 to 41 % of free acetic acid and 58 to 60 % of sodium acetate

Description

White, hygroscopic crystalline solid with an acetic odour

Identification

Not less than 4,5 and not more than 5,0

Purity

Water content

Not more than 2 % (Karl Fischer method)

Formic acid, formates and other oxidisable substances

Not more than 1 000 mg/kg expressed as formic acid

Arsenic

Not more than 3 mg/kg

Lead

Not more than 5 mg/kg

Mercury

Not more than 1 mg/kg

Heavy metals (as Pb)

Not more than 10 mg/kg