BROWN FK
Prepared at the 30th JECFA (1986), published in FNP 37 (1986) and in FNP 52 (1992). Metals and arsenic specifications revised at the 59th JECFA
(2002). No ADI was allocated at the 30th (JECFA 1986)
SYNONYMS CI Food Brown 1; INS No. 154
DEFINITION A mixture of six mono-, bis- and trisazo colours (see ‘Chemical names’ below) and subsidiary colouring matters together with water, sodium chloride and/or sodium sulfate as the principal uncoloured components.
This product as manufactured, and to which these specifications apply, is often diluted with sodium chloride to a total colouring matters content of about 50% to meet the needs of users.
Chemical names A mixture of
I Sodium 4-(2,4-diaminophenylazo) benzenesulfonate
II Sodium 4-(4,6-diamino-m-tolylazo) benzenesulfonate
III Disodium 4,4'-(4,6-diamino-1,3-phenylenebisazo)- di(benzenesulfonate)
IV Disodium 4,4'-(2,4-diamino-1,3-phenylenebisazo)- di(benzenesulfonate)
V Disodium 4,4'-(2,4-diamino-5-methyl-1,3-phenylene- bisazo)di(benzenesulfonate)
VI Trisodium 4,4',4''-(2,4-diaminobenzene-1,3,5- trisazo)tri-(benzenesulfonate)
C.A.S. number 8062-14-4
DESCRIPTION Red-brown powder or granules
FUNCTIONAL USES Colour
