Sodium thiosulphate, anhydrous 98.5%, extra pure
Supplier: Thermo Fisher Scientific
Certificates
About this item
Synonyms: Sodiumthiosulphate, Sodium hyposulphite, Antichlor, di-Sodium thiosulphate
CAS Number:7772-98-7
:
Formula:Na₂S₂O₃
MDL Number:MFCD00003499
:158.11 g/mol
Merck Index:12,08844
Boiling Pt:100 °C (1013 hPa)
Melting Pt:48 °C
Density:1,66 g/cm³ (20 °C)
Storage Temperature:Ambient
EINECS:231-867-5
Specifications
- Environmentally Preferable:
Specifications
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
Specification Test Results
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