Indigo Carmine

Indigo Carmine

Specification
Product NameIndigo Carmine
Colour ShadeAcid Blue 74
SynonymsAcid Blue 74
Chemical NameDisodium 3,3′-dioxo-2,2′-bi-indolylidene-5,5′-disulphonate
C.I. No73015
C.I. NameFood Blue 1
FDA StatusFD&C Blue #2
CAS No.860-22-0
EINECS No.212-728-8
E. NUMBERE-132
TestEEC (Limit)
Total colouring matters calculated as the sodium salt percent by massMin.85
Water insoluble matter, percent by massMax.0.20
Combined ether extract, percent by massMax.0.20
Unsulfonated Primary Aromatic amines. percent by massMax.0.01
Subsidiary dyes, percent by massMax.1
Total organic compound other than colouring matters, percent by mass
Isatin-5-sulfonic acid,
5-sulfoanthranilic acid
Anthranilic acid
Max.0.50
Heavy metals as pb(mg/kg.)Max.40
Arsenic, (mg/kg.)Max.3
Lead (mg/kg.)Max.2
Mercury (mg/kg.)Max.1
Cadmium (mg/kg.)Max.1