Sodium Thiosulfate Pentahydrate

Sodium Thiosulfate Pentahydrate
CAS No. 10102 - 17 - 7 Grade : GR
Mol. Wt. 248.11 g/mol Mol Formula : Na2S2O3.5H2O
Appearance Colorless Crystals
Identity Na - Passes Test
S2O3 - Passes Test
Melting Point 48.50C
Test Solution(10 %W/V),Water Clear and Colorless Solution
PARAMETERS GR
Assay NLT 99.5%
pH(5% Aqueous Solution) at 25 0C 5.50 - 9.00%
MAXIMUN LIMITS OF IMPURITIES
Insoluble Matter 0.003%
Chloride(Cl) 0.02%
Sulphate(SO4) & Sulphite(SO3) 0.03%
Sulfide(S) 0.0002%
Calcium(Ca) 0.002%
Copper(Cu) 0.0005%
Heavy Metals (as Pb) 0.0005%
Iron (Fe) 0.0005%
Magnesium (Mg) 0.001%
Potassium (K) 0.005%
Total Nitrogen(N) 0.005%
Sodium Thiosulfate Pentahydrate
CAS No. 10102 - 17 - 7 Grade : ACS
Mol. Wt. 248.11 g/mol Mol Formula : Na2S2O3.5H2O
Appearance Colorless Crystals
Identity Na - Passes Test
S2O3 - Passes Test
Melting Point 48.50C
Test Solution(10 %W/V),Water Clear and Colorless Solution
PARAMETERS ACS
Assay NLT 99.0 - 101.0%
pH(5% Aqueous Solution) at 25 0C 6.00 - 8.40%
MAXIMUN LIMITS OF IMPURITIES
Insoluble Matter 0.005%
Sulphate(SO4) & Sulphite(SO3) 0.01%
Sulfide(S)Passes Test Nitrogen Compound 0.002%
Sodium Thiosulfate Pentahydrate
CAS No. 10102 - 17 - 7 Grade : AR
Mol. Wt. 248.11 g/mol Mol Formula : Na2S2O3.5H2O
Appearance Colorless Crystals
Identity Na - Passes Test
S2O3 - Passes Test
Melting Point 48.50C
Test Solution(10 %W/V),Water Clear and Colorless Solution
PARAMETERS AR
Assay NLT 99.5%
pH(5% Aqueous Solution) at 25 0C 6.00 - 8.40%
MAXIMUN LIMITS OF IMPURITIES
Insoluble Matter 0.005%
Chloride(Cl) 0.002%
Sulphate(SO4) & Sulphite(SO3) 0.03%
Sulfide(S) 0.0002%
Calcium(Ca) 0.002%
Copper(Cu) 0.0005%
Heavy Metals (as Pb) 0.0005%
Iron (Fe) 0.0005%
Magnesium (Mg) 0.002%
Potassium (K) 0.005%
Total Nitrogen(N) 0.01%
Potassium (K) 0.002%
Sodium Thiosulfate Pentahydrate
CAS No. 10102 - 17 - 7 Grade : LR
Mol. Wt. 248.11 g/mol Mol Formula : Na2S2O3.5H2O
Appearance Colorless Crystals
Identity Na - Passes Test
S2O3 - Passes Test
Melting Point 48.50C
Test Solution(10 %W/V),Water Clear and Colorless Solution
PARAMETERS LR
Assay NLT 99.0%
MAXIMUN LIMITS OF IMPURITIES
Chloride(Cl) 0.03%
Sulphate(SO4) & Sulphite(SO3) 0.1%
Sulfide(S) 0.002%
Iron (Fe) 0.001%
Potassium (K) 0.1%