Certificate of Analysis

Product Name m-CRESOL PURPLE indicator
CAS Number 2303-01-7
Molecular Formula C21H18O5S
Catalogue No. AL0570A
Molecular Weight 382.44 g/mol
Batch Number AL-2026-AL0570A
Manufacturing Date September-2026
Expire Date September-2031
Type of Test Standard Observed
Assay (Dye Content) ≥ 90% 92%
Melting Point 190-192 °C 191 °C
Moisture Content ≤ 1% 0.5%
Residue on Ignition ≤ 0.5% 0.3%
Related Substances None detected None detected
Solubility Slightly soluble in water, soluble in alcohol Slightly soluble in water, soluble in alcohol.
Result: The above product is expected to comply with Dye content min. 90% grade specification.

Tested By

Hitesh Kunjathur Tested By Stamp

Analysed By

Preeti Rane Analysed By Stamp
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