CERTIFICATE OF ANALYSIS

Product Name	METHYLENE BLUE AR	CAS Number	61-73-4
Molecular Formula	C 16 H 18 ClN 3 S.xH 2 O	Catalogue No.	AL3055
Molecular Weight	319.859	Batch Number
Manufacturing Date	December-2020	Expire Date	November-2025

TYPE OF TEST	STANDARD	OBSERVED
Description Dye content Absorption (in 50% EtOH) Spec. Absorptivity A1%/1cm (lambda max 0.003g/l; ethanol 50%) Absoption ratio (635 nm/665 nm; 0.003g/l; ethanol 50%) Sulphated ash (600°C)	A dark green colored powder Min. 82% 660 - 665nm 2250 - 2750 0.56 - 0.62 <1.0%	A dark green colored powder 84.2% 660 nm 2575.30 0.62 <1.0%

Result: The above product complies with AR grade

Tested By
Hitesh Kunjathur

Analysed By
Preeti Rane