VWR Sodium thiosulphate pentahydrate 99.5-100.5%, AnalaR NORMAPUR® ACS analytical reagent

VWR Sodium Thiosulphate Pentahydrate (Na₂S₂O₃·5H₂O) is a high-purity, crystalline reagent with an assay range of 99.5–100.5%, compliant with both ACS and AnalaR NORMAPUR® standards. It is commonly used as a reducing agent in iodometric titrations, chlorine analysis, and redox reactions, particularly in environmental testing, pharmaceutical QC, and analytical chemistry.

Its excellent solubility in water and stability at ambient temperatures make it ideal for both laboratory and industrial settings.

Product Specifications

Packaging Options

Applications

• Iodometric titrations (e.g., for iodine, chlorine, bromine, and hydrogen peroxide)
• Residual chlorine analysis in water treatment
• Redox chemistry and volumetric analysis
• Photographic processing as a fixing agent
• Textile, leather, and pulp bleaching applications
• Dechlorination reagent in laboratory and industrial workflows

VWR Sodium Thiosulphate Pentahydrate 99.5–100.5%, AnalaR NORMAPUR® provides reliable, high-purity performance in titrimetric, redox, and industrial applications. Its compliance with ACS and Ph. Eur. standards ensures suitability for regulated laboratory and quality control environments, where consistency and traceability are essential.