Indigo carmine, high purity biological stain, for analysis

Supplier: Thermo Scientific

ACRO157445000EA 381 EUR
ACRO157445000 ACRO157440250 ACRO157441000
Indigo carmine, high purity biological stain, for analysis
Indigo carmine
Formula: C₁₆H₈N₂Na₂O₈S₂
MW: 466,36 g/mol
Melting Pt: ? 300 °C
Storage Temperature: Ambient
MDL Number: MFCD00005723
CAS Number: 860-22-0
Merck Index: 13,04969

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Specification Test Results

Appearance Dark blue Crystalline powder
Infrared spectrum Conforms
Heavy metals ≤40 ppm
Additional info NaCl, Na2SO4 and volatile matter: < 15%
Additional info ether extractable matter: < 0.2%
Additional info synthetic intermediates other than free aromatic amines (total): < 0.5%
Additional info subsidiary colours: < 1.0%
Additional info dinatrium-3,3'-dioxo-2,2'-bisindolylidene-5,7'-disulphonate: 18.0%
Dye content ≥85 %
Arsenic (As) ≤3 ppm
Cadmium (Cd) ≤1 ppm
Lead (Pb) ≤10 ppm
Mercury (Hg) ≤1 ppm
Free amine ≤0.01 % (aromatic)
Insoluble matter ≤0.2 % (in water)

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