White, crystalline powder
CAS: 126-96-5
Formula: C4H7NaO4
MW: 142.09g/mol
MP: 323-329�C
pH: 4.5-5 (10wt% water solution)

Sodium diacetate is a 1:1 mixture of sodium acetate and acetic acid, is commonly
used as a preservative and acidulant. Structurally, sodium diacetate has up to 41wt%
acetic acid locked in its crystalline state, hence the name �dry acetic acid�. As a
solid
acid, sodium diacetate is effective as a fungicide, bactericide, anti-mold, and anti-
rope. In agro-industry, it is routinely applied to animal feeds to preserve the quality
of feeds during storage.