Sodium Thio Sulphate
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Product Code : SCL-LC-12275
Sodium Thio Sulphate (SKU SCL-LC-12275), better known as sodium thiosulphate or sodium thiosulfate, is an inorganic reducing salt used in supervised iodometric titrations, reaction-rate experiments, dechlorination demonstrations and solution preparation. It is a routine reagent in school and college chemistry labs. Science Lab Supplies ships it out of Ambala, India, for schools, colleges, training institutes, tender contractors and distributors.
Specifications
The anhydrous salt is Na2S2O3, and the common pentahydrate is Na2S2O3·5H2O; the two have different formula weights, which matters when making standard solutions. The hydrate form, grade, assay and pack size are shown on the batch label and confirmed in your quotation before dispatch.
| Parameter | Value |
|---|---|
| SKU | SCL-LC-12275 |
| Other names | Sodium thiosulphate, sodium thiosulfate |
| Formula | Na2S2O3 (anhydrous); Na2S2O3·5H2O (pentahydrate) |
| Chemical type | Inorganic thiosulphate; reducing agent |
| Grade and pack size | As stated on the label and quotation |
| Supplied by | Science Lab Supplies, Ambala, India |
Applications and Experiments for Sodium Thiosulphate
Chemistry labs rely on thiosulphate in two classic practicals: titrating liberated iodine in iodometric analysis, and the cloudy sulphur-forming reaction with acid used to measure reaction rates. It also illustrates reducing-agent behaviour and can remove chlorine in supervised dechlorination demonstrations.
- Class 12 chemistry practicals: effect of concentration and temperature on the rate of the thiosulphate-acid reaction.
- B.Sc. analytical chemistry: iodometric titrations with standardised thiosulphate solution.
- Class 11 chemistry: redox reactions and reducing agents.
- Supervised dechlorination and iodine-quenching demonstrations.
Standard Scope of Supply
Each unit is one pack of sodium thiosulphate in the hydrate form and quantity stated on the quotation, carrying a batch label with hazard information and accompanied by the Safety Data Sheet and transport documents. Shelf life depends on the chemical, its grade and storage conditions; ask us for the expiry date of the batch you are quoted.
Packing, MOQ and Lead Time
Order a single pack for one lab or a titration stock for a whole department; the quotation will specify packing, delivery time and price for that amount. Iodometric reagents, burettes and other chemistry lab equipment in India can be quoted in the same document.
As a registered exporter with an Importer-Exporter Code, Science Lab Supplies can ship to buyers in Iraq, Nigeria, Kenya, Ghana, Ethiopia and Tanzania. Enquire through the contact page or add the reagent to your enquiry cart; institutions buying by tender can consult the lab tender page.
Frequently Asked Questions
Is sodium thio sulphate the same as sodium thiosulfate?
Yes. Sodium thio sulphate, sodium thiosulphate and sodium thiosulfate are spelling variants for the same salt. The label confirms whether your batch is anhydrous or the pentahydrate.
What is it used for in a chemistry lab?
Mainly for iodometric titration, reaction-rate experiments with acid, redox teaching, dechlorination demonstrations and preparing standard solutions under supervision.
Who supplies the Sodium Thio Sulphate?
Science Lab Supplies, which operates as a laboratory chemicals supplier in India from Ambala, supplies it to schools, colleges and distributors and confirms hydrate form and pack size on each quotation.
What precautions apply?
Use it under supervision, avoid swallowing or breathing the dust, and do not mix it with acids outside a planned experiment. Store it closed, cool and dry, away from acids and strong oxidisers.
Related Iodometry and Redox Reagents
An iodometric titration needs an iodine source, an iodide and an oxidant as well as thiosulphate. These four chemicals from the same range complete that redox set for school and college practicals, and a chemistry store can place them on one quotation with the thiosulphate.
- Potassium Iodide — iodide salt for iodine solutions and iodometric practical work.
- Iodine Crystals — elemental halogen for iodine solutions and starch-iodine tests.
- Potassium Dichromate — chromium(VI) oxidising reagent for titration demonstrations.
- Hydrogen Peroxide 6% Analytical Solution — 6% oxidising solution for redox lessons.
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Last updated: 25 September 2026
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