ANNEX I

E 261 POTASSIUM ACETATE

Definition
Chemical namePotassium acetate
Einecs204-822-2
Chemical formulaC2H3O2K
Molecular weight98,14
AssayContent not less than 99 % on the anhydrous basis
DescriptionColourless, deliquescent crystals or a white crystalline powder, odourless or with a faint acetic odour
Identification
A. pH of a 5 % aqueous solution
Not less than 7,5 and not more than 9,0
B. Positive tests for acetate and for potassium
Purity
Loss on dryingNot more than 8 % after drying at 150 oC for two hours
Formic acid, formates and other oxidisable substancesNot more than 1 000 mg/kg expressed as formic acid
ArsenicNot more than 3 mg/kg
LeadNot more than 5 mg/kg
MercuryNot more than 1 mg/kg
Heavy metals (as Pb)Not more than 10 mg/kg