Sulfates
Sodium thiosulfate (13481)
anhydrous, assay (calc. to the dried substance) min. 98%
Overview
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Specifications
General Information
- Molar Mass
- 158.11 g/mol
- CAS Number
- 7772-98-7
- Linear Formula
- Na2S2O3
Physical Properties
- Color
- Colorless
- Vapor Pressure
- Negligible hectopascal
- Boiling Point/Range
- Decomposes on heating.
- Density
- 1.67 g/cm3 (20 °C)
- Odor
- Odorless
- Melting Point/Range
- No data available
- pH
- 6.0 to 8.5 at 50 g/l (20 °C)
- Physical Form
- Crystalline powder
Safety Information
- Chemical Stability
- Stable under recommended storage conditions.
- Incompatible Materials
- Acids, Oxidizing agents
- Flammability
- The product is not flammable.
- Thermal Decomposition
- No decomposition if used as directed.
International Transportation
- Harmonized System Code
- 28323000
General Information
- Molar Mass
- 158.11 g/mol
- CAS Number
- 7772-98-7
- Linear Formula
- Na2S2O3
Physical Properties
- Color
- Colorless
- Vapor Pressure
- Negligible hectopascal
- Boiling Point/Range
- Decomposes on heating.
- Density
- 1.67 g/cm3 (20 °C)
- Odor
- Odorless
- Melting Point/Range
- No data available
- pH
- 6.0 to 8.5 at 50 g/l (20 °C)
- Physical Form
- Crystalline powder
Safety Information
- Chemical Stability
- Stable under recommended storage conditions.
- Incompatible Materials
- Acids, Oxidizing agents
- Flammability
- The product is not flammable.
- Thermal Decomposition
- No decomposition if used as directed.
International Transportation
- Harmonized System Code
- 28323000
- Molar Mass : 158.11 g/mol
- CAS Number : 7772-98-7
- Linear Formula : Na2S2O3
- Color : Colorless
- Vapor Pressure : Negligible hectopascal
- Boiling Point/Range : Decomposes on heating.
- Density : 1.67 g/cm3 (20 °C)
- Odor : Odorless
- Melting Point/Range : No data available
- pH : 6.0 to 8.5 at 50 g/l (20 °C)
- Physical Form : Crystalline powder
- Chemical Stability : Stable under recommended storage conditions.
- Incompatible Materials : Acids, Oxidizing agents
- Flammability : The product is not flammable.
- Thermal Decomposition : No decomposition if used as directed.
- Harmonized System Code : 28323000
Property
Value
assay (calc. to the dried substance)
Min. 98 %
loss on drying (105°C, 2 h)
Max. 2 %
pH (5 %, 20°C)
6.0 - 8.5
iron (Fe)
Max. 0.005 %
heavy metals (as Pb)
Max. 0.005 %
chloride (Cl)
Max. 0.15 %
sulfate and sulfite(as SO4)
Max. 1 %
