217247

Sodium thiosulfate pentahydrate

ACS reagent, ≥99.5%

• Linear Formula: Na₂S₂O₃ · 5H₂O
• CAS Number: 10102-17-7
• Molecular Weight: 248.18
• EC Number: 231-867-5
• MDL number: MFCD00149186
• UNSPSC Code: 12352302
• PubChem Substance ID: 329752198
• NACRES: NA.21

Properties

• grade: ACS reagent
• agency: suitable for EPA 1621; suitable for ISO 25101; suitable for SM 2310; suitable for SM 2320; suitable for SM 4500 - NH3
• assay: ≥99.5%
• form: crystalline powder; crystals; pellets
• impurities: ≤0.002% N compounds; ≤0.005% insolubles
• pH: 6.0-8.4 (25 °C, 5%)
• solubility: water: soluble(lit.)
• anion traces: S^2-: passes test; SO₄^2- and SO₃^2-: ≤0.1%
• cation traces: N: ≤0.002%
• SMILES string: O.O.O.O.O.[Na+].[Na+].[O-]S([O-])(=O)=S
• 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

Description

General description

Sodium thiosulfate pentahydrate is a hydrated form of sodium thiosulfate. It is used as a sulfur source for the preparation of various organosulfur compounds.

Application

Applied in a widely useful, thiosulfate-assisted, synthesis of a variety of diamine-CuCN complexes.

Sodium thiosulfate pentahydrate can be used as a sulfur source to synthesize:      

• Thioester derivatives via one-pot two-step reactions with organic halides and aryl anhydrides.      
• Sulfur nanoparticles using F. benghalensis leaf extract which acts as a reducing and capping agent.      
• Unsymmetrical heteroaryl thioethers via multicomponent reaction with heteroaryl chlorides and alcohols.

It can also be used in the fabrication of microencapsulated phase change materials for thermal energy storage applications.

Features and Benefits

Na₂S₂O₃ 5H₂O is a low toxic and odorless reagent that can be easily used in large-scale operations.

Safety Information

• Storage Class: 13 - Non Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable