Certificate of Analysis

Product Name NIGROSINE (C.I. No.50420)
CAS Number 8005-03-6
Molecular Formula C20H12N4Na2O9S2
Catalogue No. AL01086
Molecular Weight 492.54 g/mol
Batch Number AL-2026-AL01086
Manufacturing Date September-2026
Expire Date September-2031
Type of Test Standard Observed
Assay ≥ 95% 96.5%
Moisture Content ≤ 5% 3.2%
Residue on Ignition ≤ 1% 0.5%
Related Substances None detected None detected
Solubility Soluble in water Fully soluble
Result: The above product is expected to comply with Water soluble grade specification.

Tested By

Hitesh Kunjathur Tested By Stamp

Analysed By

Preeti Rane Analysed By Stamp
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