Sodium thiosulphate, anhydrous 98.5%, extra_pure

Supplier: Thermo Fisher Scientific

Synonyms: Sodiumthiosulphate, Sodium hyposulphite, Antichlor, di-Sodium thiosulphate

202870010 202870025 202875000 202870100
ACRO202870010EA 79.9 GBP
ACRO202870010 ACRO202870025 ACRO202875000 ACRO202870100
Sodium thiosulphate, anhydrous 98.5%, extra_pure
Sodium thiosulphate
Formula: Na₂S₂O₃
MW: 158.11 g/mol
Boiling Pt: 100
Melting Pt: 48 °C
Storage Temperature: Ambient
MDL Number: MFCD00003499
CAS Number: 7772-98-7
EINECS: 231-867-5
Merck Index: 12,08844

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Specification Test Results

Appearance White Crystalline powder
Titration Iodimetric ≥98.0 % (on dry substance)
Loss on drying ≤2 % (105°C, 2 h)
pH 6.0 to 8.5 (5 % at 20°C)
Chloride (Cl) ≤1500 ppm
SO4 and SO3 (as SO4) ≤1 %
Iron (Fe) ≤50 ppm
Heavy metals (as Pb) ≤50 ppm


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