Certificate of Analysis

Product Name PYROGALLOL RED AR
CAS Number 32638-88-3
Molecular Formula C19H12O8S
Catalogue No. AL01282
Molecular Weight 400.36 g/mol
Batch Number AL-2026-AL01282
Manufacturing Date September-2026
Expire Date September-2031
Type of Test Standard Observed
Description Dark brown colored powder Dark brown colored powder
Max in pyridine/water 540-546 nm 542 nm
Absorptivity 1%, 1cm@ max Min 850 859
Loss on drying at 13°C <5.0% 3.9%
Residue on ignition <1.0% <1.0%
Result: The above product complies with AR grade

Tested By

Hitesh Kunjathur Tested By Stamp

Analysed By

Preeti Rane Analysed By Stamp
ISO Certifications