Certificate of Analysis

Product Name NIGROSINE (C.I. No.50415)
CAS Number 11099-03-9
Molecular Formula Complex azine dye mixture
Catalogue No. AL01085
Molecular Weight N/A
Batch Number AL-2026-AL01085
Manufacturing Date September-2026
Expire Date September-2031
Type of Test Standard Observed
Description Black powder Black powder
Absorption maxima (in 50% ethanol) 570 – 580 nm 577 nm
Specific absorptivity (A1%, 1cm 0.025g/L ethanol 50%) 200 - 300 275
Result: The above product complies with LR grade

Tested By

Hitesh Kunjathur Tested By Stamp

Analysed By

Preeti Rane Analysed By Stamp
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