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Indigo carmine, C.I. 73015, Reag. Ph Eur

- Synonyms: Indigo-5,5'-disulfonic acid disodium salt, Acid Blue 74 - C16H8N2Na2O8S2 - M = 466,35 g/mol - CAS [860-22-0] - EINECS-No.: 212-728-8 - Solub. in water: (25 ºC): 10 g/l - LD 50 (oral, rat): > 2000 mg/kg - GHS-signal word: Warning - GHS-H sentences: H302 - GHS-P sentences: P264 - P270 - P301+P312 - P330 - P501a - Tariff number: 3204 12 00 00 - Applications: colouring agent (microscopy), for pharmaceutical use, in food industry, for the detection of: nitrates, chlorates. SPECIFICATIONS assay: min. 85 % Identification A: passes test Identification B: passes test insoluble in water: max. 0,2 % secondary colorants: max. 1,0 % other organic compounds: max. 0,5 % unsulfonated primary aromatic amines (as aniline): max. 0,01 %: ether extractable substances (neutral conditions): max. 0,2 % arsenic (As): max. 3 ppm lead (Pb): max. 10 ppm mercury (Hg): max. 1 ppm cadmium (Cd): max. 1 ppm heavy metals (as Pb): max. 40 ppm