Sodium thiosulfate pentahydrate 99.0-101.0% (by iodometry), crystallised, EMPROVE® ESSENTIAL Ph. Eur., BP, USP, SAFC®

Supplier: MilliporeSigma

1.06514.0750 1.06514.9025 1.06514.2500 1.06514.9012 1.06514.2500 1.06514.9025

CA1.06514.0750EA 104.11 CAD

CA1.06514.0750 CA1.06514.2500 CA1.06514.9012 EM1.06514.9025 CA1.06514.9025 EM1.06514.2500

Sodium thiosulfate pentahydrate 99.0-101.0% (by iodometry), crystallised, EMPROVE® ESSENTIAL Ph. Eur., BP, USP, SAFC®

Sodium thiosulphate pentahydrate

Formula: Na₂S₂O₃.5H₂O
MW: 248.19 g/mol
Melting Pt: 48 °C
Density: 1.67 g/cm³ (20 °C)

MDL Number: MFCD00149186
CAS Number: 10102-17-7
Merck Index: 12,08844

Specification Test Results

Assay (iodometric)	99.0 - 101.0 %
Assay (iodometric, calc.on anhydrous substance)	99.0 - 100.5 %
Identity	passes test
Appearance of solution	passes test
pH-value (10 %; water)	6.0 - 8.4
Sulfate and sulphite (as SO₄)	≤ 0.2 %
Sulfide (S)	passes test
Heavy metals (as Pb)	≤ 0.001 %
Ca (Calcium)	passes test
Residual solvents (ICH Q3C)	excluded by manufacturing process
Water	32.0 - 37.0 %
Elemental impurity specifications have been set considering ICH Q3D (Guideline for Elemental Impurities). Class 1-3 elements are not likely to be present above the ICH Q3D option 1 limit, unless specified and indicated (*).
Corresponds to Ph Eur,BP,USP

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