CERTIFICATE OF ANALYSIS
Product Name HYDROXY NAPHTHOL BLUE Indicator grade CAS Number 63451-35-4
Molecular Formula C 20 H 11 N 2 Na 3 O 11 S 3 Catalogue No. AL2510
Molecular Weight 620.48 Batch Number
Manufacturing Date December-2020 Expire Date November-2025

TYPE OF TEST

STANDARD

OBSERVED
Description
Absorptivity (A 1% 1cm pH 12.0 on dried substance)
Suitability as metal indicator
Black colored powder
About 646 nm
Passes test
Black colored powder
647 nm
Passes test
Result: The above product complies with LR grade

Tested By
Hitesh Kunjathur

Analysed By
Preeti Rane