Sodium Thiosulfate

Synonym: Na2S2O3·5H2O, Sodium hyposulfite pentahydrate, Disodium thiosulfate pentahydrate, Sodium thiosulphate pentahydrate, Disodium sulfurothioate pentahydrate, Sodium sulfurothioate hydrate, Thiosulfuric acid disodium salt pentahydrate

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Sodium Thiosulfate Chemical Structure

Overview

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Product Code NA2177
Product Name Sodium Thiosulfate
CAS Number 10102-17-7
Molecular formula Na2S2O3 · 5H2O
Linear formula Na2S2O3 · 5H2O
Molecular weight 248.18
Form solid
Melting point 48C
Boiling point 100C
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Test Specification

Assay (purity) 99.5%
Purity method by elemental analysis
Appearance clear to white crystal
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Safety Information

UN NOT REGULATED
In TSCA registry No (sold for research and development usage only)
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External Identifiers for Na2S2O3·5H2O

Pubchem CID 61475
SMILES [Na+].[Na+].[O-]S([O-])(=O)=S.O.O.O.O.O
IUPAC Name disodium; dioxido-oxo-sulfanylidene-λ6-sulfane; pentahydrate
InchI Identifier InChI=1S/2Na.H2O3S2.5H2O/c;;1-5(2,3)4;;;;;/h;;(H2,1,2,3,4);5*1H2/q2*+1;;;;;;/p-2
InchI Key PODWXQQNRWNDGD-UHFFFAOYSA-L
MDL Number MFCD00003499
EC Number 231-867-5
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