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Sodium Carbonate INS No.500(i)

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  • Published: 2013-08-08
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Introduction
SODIUM 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 ‘not limited’ was established at the 9th JECFA (1965).
SYNONYMS Soda ash; INS No.500(i)
DEFINITION
Chemical names Sodium carbonate, sodium salt of carbonic acid
C.A.S. number 497-19-8
Chemical formula Anhydrous: Na2CO3
Hydrated: Na2CO3 · xH2O
Formula weight 106.00 (anhydrous)
Assay Not less than 99.0% after drying
DESCRIPTION Colourless crystals or white, granular or crystalline powder; the anhydrous form is hygroscopic; hydrated forms available include the monohydrate and the decahydrate; the latter is efflorescent.
FUNCTIONAL USES Alkali
 
 
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