BROWN HT
Prepared at the 28th JECFA (1984), published in FNP 31/1 (1984) and in FNP 52 (1992). Metals and arsenic specifications revised at the 59th JECFA (2002). An ADI of 0-1.5 mg/kg bw was established at the 28th JECFA (1984)
SYNONYMS CI Food Brown 3, Chocolate brown HT, CI (1975) No. 20285, INS No. 155
DEFINITION Consists essentially of disodium 4,4'- (2,4-dihydroxy-5-hydroxymethyl-1,3-phenylene-bisazo) di-1-naphthalene-sulfonate and subsidiary colouring matters together with sodium chloride and/or sodium sulfate as the principal uncoloured components.
May be converted to the corresponding aluminium lake in which case only the General Specifications for Aluminium Lakes of Colouring Matters apply.
Chemical names Disodium 4,4'-(2,4-dihydroxy-5-hydroxymethyl-1,3-phenylene-bisazo di-1-naphthalenesulfonate
C.A.S. number 4553-89-3
Chemical formula C27H18N4Na2O9S2
Formula weight 652.57
Assay Not less than 70% total colouring matter
DESCRIPTION Brown powder or granules
FUNCTIONAL USES Colour
