Sodium thiosulphate pentahydrate ≥99.5%, Puriss. p.a. ACS, ISO, Reag. Ph. Eur., Fluka™

Supplier: Honeywell Chemicals

31459-1KG 31459-5KG 31459-6X1KG
HONC31459-1KGEA 265 SGD
HONC31459-1KG HONC31459-5KG HONC31459-6X1KG
Sodium thiosulphate pentahydrate ≥99.5%, Puriss. p.a. ACS, ISO, Reag. Ph. Eur., Fluka™
Sodium thiosulphate pentahydrate
Formula: Na₂S₂O₃.5H₂O
MW: 248,19 g/mol
Boiling Pt: Decomposes on heating
Melting Pt: 48 °C (dec.)
Density: 1,73 g/cm³ (20 °C)
Storage Temperature: Ambient
MDL Number: MFCD00149186
CAS Number: 10102-17-7
EINECS: 231-867-5
Merck Index: 12,08844

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Specification Test Results

Assay Min. 99.5 %
Water insoluble matter Max. 0.005 %
pH (5 %, 25 °C) 6.0 - 7.5
pH (10 %, 20°C) 6.0 - 8.4
Calcium (Ca) Max. 0.002 %
Copper (Cu) Max. 0.0005 %
Iron (Fe) Max. 0.0005 %
Potassium (K) Max. 0.001 %
Magnesium (Mg) Max. 0.001 %
Lead (Pb) Max. 0.0005 %
Chloride (Cl) Max. 0.01 %
Sulfate and sulfite (as SO₄) Max. 0.1 %
Sulfide (S) Max. 0.0001 %
Total N Max. 0.002 %
Appearance of the solution complying

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