CERTIFICATE OF ANALYSIS

Product Name	SODIUM THIOSULPHATE PENTAHYDRATE Extra Pure	CAS Number	10102-17-7
Molecular Formula	Na O 2 S 2 O 3 .5H 2	Catalogue No.	AL4296
Molecular Weight	248.17	Batch Number
Manufacturing Date	December-2020	Expire Date	November-2025

TYPE OF TEST	STANDARD	OBSERVED
Description Assay pH (5% water) Sulphate & Sulphite (as SO4) Sulphide (S) Heavy metals (as Pb) Arsenic (As) Calcium Iron (Fe) Potassium (K) Magnesium (Mg)	Colorless Crystalline powder Min. 99.0% 6.0 - 8.4 <0.2% <0.0005% <0.0005% <0.0002% <0.01% <0.005% <0.02% <0.005%	Colorless Crystalline powder 99.33% 6.82 0.1% <0.0005% 0.0004% 0.0001% <0.01% <0.005% 0.009% <0.005%

Result: The above product complies with EP grade

Tested By
Hitesh Kunjathur

Analysed By
Preeti Rane