217247
Fluka

Sodium thiosulfate pentahydrate

SKU
217247
ACS Reagent, ≥99.5%
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
Assay(Iodometric)99.5-101.0%
WaterinsolublematterMax.0.005%
pH(5%,25°C)6.0-8.4
Sulfateandsulfite(asSO4)Max.0.1%
Sulfide(S)Max.0.0001%
TotalNMax.0.002%
Appearancecomplying
Identity(ICP)complying

Properties

PropertyValue
Autoignition TemperatureNot auto-flammable
Boiling Point/RangeDecomposes on heating
ColorColorless
Density1.73 g/cm3 (20 °C)
FlashpointNot applicable
FormCrystalline
GradeACS Grade Salts
Incompatible MaterialsIncompatible with strong acids, oxidizers and nitrates.
Lower Explosion LimitNot applicable
Melting Point/Range48 °C (Decomposition)
Partition CoefficientNo data available
Purity Percentage99.5
Purity Details>=99.5%
Solubility in Water794 g/l (0 °C)
Upper Explosion LimitNot applicable
Vapor PressureNo data available
ViscosityNot applicable
pH-Value6.0-7.5 at 100 g/l (25 °C)
Storage TemperatureAmbient

Safety Information

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