SYNONYMS	ALLURA RED * C. I. FOOD RED 17
DEFINITION	Allura Red consists essentially of disodium 2-hydroxy-1-(2-methoxy-5-methyl-4-sulfonato-phenylazo) nephthalene-6-sulfonate and subsidiary colouring matters together with sodium chloride and/or sodium sulfate as the principal uncoloured components.
	Allura Red  is described as the sodium salt. The calcium and the potassium salt are also permitted.
CLASS	Monoazo
COLOUR INDEX NO.	16035
EEC NUMBER	E-129
EINECS	247-368-0
CHEMICAL NAMES	Disodium 2-hydroxy-1-(2-methoxy-5-methyl-4-sulfonato-phenylazo) nephthalene-6-sulfonate
CHEMICAL FORMULA	C18H14N2Na2O8S2
MOLECULAR WEIGHT	496.42
ASSAY	Content not less than 85% total colouring matters, calculated as the sodium salt;
	E 1% 1cm 540 at ca 504 nm in aqueous solution at pH7
DESCRIPTION	Dark red powder
IDENTIFICATION
a. Spectrometry	Maximum in water at ca 504 nm
b. Red solution in water
PURITY	Not more than 0.2%
Water Insoluble matter
Subsidiary colouring matters	Not more than 3.0%
Organic compounds other than colouring matters	[6-hydroxy-2-naphthalene sulfonic acid, sodium salt] - Not more than 0.3%
	[4-amino-5-methoxy-2-methylbenezene sulfonic acid] - Not more than 0.2%
	[6,6-oxybis (2-naphthalene sulfonic acid) disodium salt] - Not more than 0.1%
Unsulfonated primary aromatic amines	Not more than 0.01% (Calculated as aniline)
Ether extractable matter	From a solution of  pH7, not more than 0.2%
Arsenic	Not more than 3 mg/kg.
Lead	Not more than 10 mg/kg.
Mercury	Not more than 1 mg/kg.
Cadmium	Not more than 1 mg/kg.
Heavy metals (as Pb)	Not more than 40 mg/kg.