Sodium thiosulfate, 98.5%, extra pure, anhydrous, Thermo Scientific Chemicals

Product Code	Brand	Quantity	Packaging
10092910	Thermo Scientific Acros 202875000	500 g	Plastic bottle
10072510	Thermo Scientific Acros 202870010	1 kg	Plastic bottle
10472011	Thermo Scientific Acros 202870025	2.5 kg	Plastic bottle
11331790	Thermo Scientific Acros 202870100	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

Chemical Identifiers

• CAS: 7772-98-7
• Molecular Weight (g/mol): 158.10
• InChI Key: AKHNMLFCWUSKQB-UHFFFAOYSA-L
• PubChem CID: 24477

• Molecular Formula: Na2O3S2
• MDL Number: MFCD00003499
• Synonym: sodium thiosulfate, sodium thiosulphate, disodium thiosulfate, sodium thiosulfate anhydrous, hypo, sodiumthiosulfate, chlorine cure, chlorine control, declor-it, thiosulfuric acid, disodium salt
• SMILES: [Na+].[Na+].[O-]S([S-])(=O)=O

Specifications

• Melting Point: 48.0°C
• Color: White
• Physical Form: Crystalline Powder
• Molecular Formula: Na2O3S2
• MDL Number: MFCD00003499
• Synonym: sodium thiosulfate, sodium thiosulphate, disodium thiosulfate, sodium thiosulfate anhydrous, hypo, sodiumthiosulfate, chlorine cure, chlorine control, declor-it, thiosulfuric acid, disodium salt
• InChI Key: AKHNMLFCWUSKQB-UHFFFAOYSA-L
• IUPAC Name: disodium;dioxido-oxo-sulfanylidene-$l^{6}-sulfane
• PubChem CID: 24477
• Percent Purity: 98.5%
• Loss on Drying: 2% (105°C, 2 hrs) max.

• CAS: 7772-98-7
• pH: 6.0 to 8.5 (5% soln. at 20°C)
• Assay Percent Range: 98% min. (on dry substance) (Iodimetry)
• Linear Formula: Na₂S₂O₃
• Merck Index: 15,8821
• Solubility Information: Solubility in water: 700g/L (20°C). Other solubilities: practically insoluble in alcohol
• SMILES: [Na+].[Na+].[O-]S([S-])(=O)=O
• Molecular Weight (g/mol): 158.10
• Formula Weight: 158.1
• Grade: Extra Pure
• Chemical Name or Material: Sodium thiosulfate

Safety and Handling

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RUO – Research Use Only