Product
Sodium Thiosulphate
Sodium thiosulphate is a reducing agent used to neutralise chlorine in water, and in photography, gold leaching, textiles and medicine.
- Grades / forms
- 97–98%
- Documents
- TDS · SDS to view and download
Overview
Sodium thiosulphate reacts with chlorine and chloramines, so it is used to dechlorinate water for aquariums, aquaculture and laboratory work. In photography it is the classic fixer, dissolving unexposed silver halide.
It is also an alternative lixiviant for gold, an antichlor in textile bleaching, and an antidote in medicine. It is supplied as the pentahydrate in crystals or powder, typically 97–98% pure or better.
Applications
- 1Dechlorination in aquaculture and water testing
- 2Photographic fixer
- 3Antichlor in textile and paper bleaching
- 4Gold leaching (non-cyanide)
- 5Pharmaceutical uses
Specification
- Sodium Thiosulphate, Percent by Mass, Min
- 99.00%
- pH of 10% Solution
- 7.0 to 8.0
- Insoluble Matter & Metals other than Alkali Metals, Percent by Mass, Max.
- 0.3%
- Sodium Sulphide, % by Mass, Max.
- 0.005%
- Heavy Metals, % by Mass, Max.
- 0.003%
- Iron, Percent by Mass, Max.
- 0.002%
Specification as stated on our Technical Data Sheet, which you can download below.
Documents
PDF documents from our quality records.
Packing & storage
Packing
- 25 kg & 50 kg HDPE bags or drums
- 1000 kg jumbo bags
- 1 MT IBC totes for liquids
Storage & handling
Store in closed bags in a cool, dry place; avoid acids.
Enquire
Get a price for Sodium Thiosulphate
Send grade, quantity and destination port. Price, lead time and documents come back within one business day.
Request a quotation or call +91 97979 77958- Certificate of Analysis with every batch
- SDS in destination format
- Made to your specification
- Private label packing
Questions
Sodium Thiosulphate, answered.
It reduces chlorine and chloramine to harmless chloride ions.
Both are supplied; powder dissolves faster, crystals flow more easily.
Yes, as a less toxic alternative to cyanide in some leaching processes.
Yes. Cosmo Chemistry manufactures and exports Sodium Thiosulphate from Surat, Gujarat, India to more than 55 countries, for customers in the water treatment industry. Send your grade, quantity and destination port for a quotation within one business day.
Every shipment of Sodium Thiosulphate from Cosmo Chemistry includes a batch-specific Certificate of Analysis (COA) and Safety Data Sheet (SDS). Certificate of Origin, third-party pre-shipment inspection and destination-specific regulatory documentation are arranged on request.
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