POTASSIUM CARBONATE
Prepared at the 19th JECFA (1975), published in NMRS 55B (1976) and in FNP 52 (1992). Metals and arsenic specifications revised at the 59th
JECFA (2002). An ADI of 0-6 mg/kg bw was established at the 9th JECFA 1965).
SYNONYMS INS No. 501 (i)
DEFINITION
Chemical names Potassium carbonate, potassium salt of carbonic acid
C.A.S. number 584-08-7
Chemical formula Anhydrous: K2CO3
Hydrated: K2CO3 · 1½H2O
Formula weight 138.21 (anhydrous)
Assay Not less than 99.0% after drying
DESCRIPTION White, odourless, very deliquescent powder; the hydrated form occurs as small, white, translucent crystals or granules
FUNCTIONAL USES Alkali
