CERTIFICATE OF ANALYSIS

Product Name	SODIUM THIOSULPHATE ANHYDROUS AR	CAS Number	7772-98-7
Molecular Formula	Na 2 S 2 O 3	Catalogue No.	AL4299
Molecular Weight	158.1	Batch Number
Manufacturing Date	December-2020	Expire Date	November-2025

TYPE OF TEST	STANDARD	OBSERVED
Description Assay Acidity (As H2SO4) Alkalinity (as NaOH) Calcium (Ca) Heavy metals (as Pb) Insoluble matter Loss on drying at 105°C Sulphate & sulphite (as SO4) Sulphide (S)	Colorless Crystalline powder 97% <0.005% <0.004% <0.01% <0.001% <0.01% <1.0% <0.5% <0.0001%	Colorless Crystalline powder 97.46% NIL 0.003% <0.01% <0.001% 0.008% 0.09% 0.22% <0.0001%

Result: The above product complies with AR grade

Tested By
Hitesh Kunjathur

Analysed By
Preeti Rane