Sodium thiosulfate, anhydrous 98.5%, extra_pure

Supplier: Thermo Scientific Chemicals

Synonyms: di-Sodium thiosulfate, Sodiumthiosulphate, Sodium hyposulphite, Antichlor, di-Sodium thiosulphate, Sodiumthiosulfate, Sodium hyposulfite

AC20287-0010 AC20287-0025 AC20287-0100 AC20287-5000
TS20287-0010EA 131 USD
TS20287-0010 TS20287-0025 TS20287-0100 TS20287-5000
Sodium thiosulfate, anhydrous 98.5%, extra_pure
Sodium thiosulphate
Formula: Na₂S₂O₃
MW: 158.11 g/mol
Boiling Pt: 100
Melting Pt: 48
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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