Indigo carmine, high purity biological stain, for analysis

Supplier: Thermo Scientific Chemicals
Warning

Synonyms: CI 730155,5'-Indigodisulfonic acid, Disodium saltCarmine BlueFood blue No. 2Sodium 3,3'-dioxo-[2,2'-biindolinylidene]-5,5'-disulphonateSodium 3,3'-dioxo-[2,2'-biindolinylidene]-5,5'-disulfonateacid Blue 745,5'-Indigodisulphonic acid, Disodium saltFD and C Blue No. 2FD&C Blue #2

15744-1000 15744-0250 15744-5000
TS15744-1000EA 158 USD
TS15744-1000 TS15744-5000 TS15744-0250
Indigo carmine, high purity biological stain, for analysis
Indigo carmine
Formula: C₁₆H₈N₂Na₂O₈S₂
MW: 466.36 g/mol
Storage Temperature: Ambient
MDL Number: MFCD00005723
CAS Number: 860-22-0
EINECS: 212-728-8

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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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