Sodium Thiosulphate (Na2S2O3)

This is our most popular Sodium Thiosulphate (Na2S2O3) - Sodium Thiosulphate Pentahydrate

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Looking to Buy Sodium Thiosulphate?

Buy sodium hydroxide solution from ReAgent, a leading UK chemical manufacturer with almost 50 years in the industry. We supply sodium thiosulphate in 1kg containers with discounts available on bulk orders. ReAgent also supplies sodium thiosulfate in 0.01M and 0.1M solutions. All of our products come with a 100% quality guarantee, with further options available for specific pack sizes or custom labelling.

About Sodium Thiosulphate

Sodium thiosulphate (Na2S2O3) is an inorganic compound typically available in a highly hydrated form. Also spelled as thiosulfate, it dissolves easily in water but not in alcohol. Sodium thiosulfate decomposes when heated, releasing toxic gases like disodium oxide and sulphur oxide. At the risk of explosion, it should be stored carefully, away from oxidising agents like potassium permanganate, nitrate or chlorate.

How is Sodium Thiosulfate Produced?

In the industry, sodium thiosulphate is synthesised from by-products of sodium sulphide production. This solution, containing sodium carbonate, is mixed with sulphur dioxide and subsequently re-crystallised. Another possible method involves boiling sodium polysulphide and nitro compounds, followed by several steps of concentration and purification of sodium thiosulphate. In the lab, this chemical can be produced from sodium sulphide heated in the presence of sulphur or, alternatively, by boiling sulphur and sodium hydroxide.

First Aid Measures

In case of contact with skin or eyes, wash affected area with copious amounts of water and remove all contaminated clothing. In case of ingestion, rinse mouth and seek medical advice. As a safety precaution, always wear appropriate protective clothing, including gloves and goggles.

100% Quality Guarantee

Accredited to the ISO 9001:2015 Quality Standard, all our products come with 100% quality guarantee and are usually dispatched within 24 hours after purchase. If you need assistance, a member of staff will be glad to help before, during and after your order. Simply contact us for further information or free technical advice. We offer a wide range of products, from petrochemicals to pharmaceuticals, including bespoke solutions to suit your needs.