13479
Fluka

Sodium thiosulfate pentahydrate

SKU
13479
puriss., meets analytical specification of USP, 99-101%
General Information:
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Brand
Fluka
CAS Numbers (All) Linear Formula
Na2S2O3 · 5H2O
MDL Number Molar Mass
248.18 g/mol
RTECS Number
231-867-5

Documents

Specifications

PropertyValue
Identitycomplying
Assay99.0 - 101.0 %
Assay (calculated on the anhydrous basis)99.0 - 100.5 %
Loss on drying (vacuum, 16 h)32.0 - 37.0 %
pH (10 %, 20°C)6.0 - 9.0
Arsenic (As)max. 0.0003 %
Calcium (Ca)max. 0.005 %
Iron (Fe)max. 0.001 %
Heavy metals (as Pb)max. 0.0005 %
Chloride (Cl)max. 0.05 %
Sulfate and sulfite (as SO4)max. 0.2 %
Sulfide (S)complying
Appearance of the solutioncomplying
Residual solventscomplying

Properties

PropertyValue
Autoignition Temperaturenot auto-flammable
Boiling Point/RangeDecomposes on heating.
Colorcolourless
Density1.73 g/cm3 (20 °C)
FlashpointNot applicable
FormCrystalline
GradeReagent Pharmacopeia Salts
Incompatible MaterialsIncompatible with strong acids, oxidizers and nitrates.
Lower Explosion LimitNot applicable
Melting Point/Range48 °C.Decomposition
Partition CoefficientNo data available
Product LinePuriss.
Purity Percentage99
Purity Details99-101%
Solubility in Water(0 °C)
Storage TemperatureRoom Temperature
Upper Explosion LimitNot applicable
Vapor Density1.73 g/cm3 (20 °C)
Vapor PressureNo data available
ViscosityNot applicable
pH-Value6.0 - 7.5 at100 g/l (25 °C)

Safety Information

PropertyValue
Hazard ClassN/A
Package GroupN/A
UN IDN/A
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