CERTIFICATE OF ANALYSIS

Product Name	SODIUM THIOSULPHATE PENTAHYDRATE AR/ACS	CAS Number	10102-17-7
Molecular Formula	Na O 2 S 2 O 3 .5H 2	Catalogue No.	AL4297
Molecular Weight	248.17	Batch Number
Manufacturing Date	December-2020	Expire Date	November-2025

TYPE OF TEST	STANDARD	OBSERVED
Description Assay Insoluble matter Reaction Chloride (Cl) Nitrogen compound (N) Sulphate & sulphite (SO4) Sulphide (S) Calcium (Ca) Copper (Cu) Iron (Fe) Lead (Pb) Magnesium (Mg) Potassium (K)	Colorless Crystalline powder 99.5 - 100.5% <0.003% pH 5.5-7.5 <0.02% <0.005% <0.1% <0.0002% <0.002% <0.0005% <0.0005% <0.0005% <0.001% <0.001%	Colorless Crystalline powder 99.91% 0.002% pH 6.60 0.01% <0.005% <0.1% 0.0001% <0.002% 0.0004% 0.0004% <0.0005% <0.001% <0.001%

Result: The above product complies with AR grade

Tested By
Hitesh Kunjathur

Analysed By
Preeti Rane