CERTIFICATE OF ANALYSIS
Product Name PYROGALLOL RED AR CAS Number 32638-88-3
Molecular Formula C 19 H 12 O 8 S Catalogue No. AL3877
Molecular Weight 400.04 Batch Number
Manufacturing Date December-2020 Expire Date November-2025

TYPE OF TEST

STANDARD

OBSERVED
Description
Max in pyridine/water
Absorptivity 1%, 1cm@  max
Loss on drying at 13°C
Residue on ignition
Dark brown colored powder
540-546 nm
Min 850
<5.0%
<1.0%
Dark brown colored powder
542 nm
859
3.9%
<1.0%
Result: The above product complies with AR grade

Tested By
Hitesh Kunjathur

Analysed By
Preeti Rane