Sodium thiosulfate pentahydrate, 99.5%, for analysis, Thermo Scientific Chemicals

Product Code	Brand	Quantity	Packaging
10696052	Thermo Scientific Acros 202850010	1 kg	Plastic Bottle
10153930	Thermo Scientific Acros 202850025	2.5 kg	Plastic Bottle
10135163	Thermo Scientific Acros 202850100	10 kg	Plastic drum

Description

This Thermo Scientific Chemicals brand product was originally part of the Acros Organics product portfolio. Some documentation and label information may refer to the legacy brand. The original Acros Organics product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Reduction reagent for analysis

Chemical Identifiers

• CAS: 10102-17-7
• Molecular Weight (g/mol): 248.18
• InChI Key: PODWXQQNRWNDGD-UHFFFAOYSA-L
• PubChem CID: 61475
• IUPAC Name: disodium;dioxido-oxo-sulfanylidene-$l^{6}-sulfane;pentahydrate

• Molecular Formula: Na₂O₃S₂·₅H₂O
• MDL Number: MFCD00149186
• Synonym: sodium thiosulfate pentahydrate, ametox, sodium thiosulfate, pentahydrate, antichlor, tinver, disodium thiosulfate pentahydrate, unii-hx1032v43m, ccris 3952, thiosulfuric acid, disodium salt, pentahydrate, sodium hyposulfite pentahydrate
• ChEBI: CHEBI:32150
• SMILES: O.O.O.O.O.[O-]S(=O)(=S)[O-].[Na+].[Na+]

Specifications

• Melting Point: 48.5°C
• Color: White
• Physical Form: Crystals
• Molecular Formula: Na₂O₃S₂·₅H₂O
• MDL Number: MFCD00149186
• Synonym: sodium thiosulfate pentahydrate, ametox, sodium thiosulfate, pentahydrate, antichlor, tinver, disodium thiosulfate pentahydrate, unii-hx1032v43m, ccris 3952, thiosulfuric acid, disodium salt, pentahydrate, sodium hyposulfite pentahydrate
• InChI Key: PODWXQQNRWNDGD-UHFFFAOYSA-L
• IUPAC Name: disodium;dioxido-oxo-sulfanylidene-$l^{6}-sulfane;pentahydrate
• PubChem CID: 61475
• Formula Weight: 248.18
• Grade: Analytical
• Decomposition Information: >45°C
• Chemical Name or Material: Sodium thiosulfate pentahydrate

• CAS: 10102-17-7
• pH: 6 to 8.4 (5% soln. at 25°C)
• Assay Percent Range: 99.5 to 101% (Iodimetry)
• Linear Formula: Na₂S₂O₃·5H₂O
• Merck Index: 15, 8821
• Solubility Information: Solubility in water: 680g/L (20°C). Other solubilities: practically insoluble in alcohol,soluble in turpentine
• SMILES: O.O.O.O.O.[O-]S(=O)(=S)[O-].[Na+].[Na+]
• Molecular Weight (g/mol): 248.18
• ChEBI: CHEBI:32150
• Percent Purity: 99.5%
• Specific Gravity: 1.72
• Density: 1.7200g/mL

RUO – Research Use Only