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 suits school and college chemistry practicals run under supervision. Science Lab Supplies dispatches the salt from Ambala, India against quotations for schools, colleges, training institutes, tender contractors and distributors.
Specifications
Both formulas, the hydrate check and the handling rules for sodium thiosulphate are set out row by row. In short, the anhydrous salt is Na2S2O3 and the pentahydrate Na2S2O3·5H2O; their formula weights differ, which matters when making standard solutions, so the hydrate form, grade, assay and pack size are confirmed on the label and quotation.
| Specification | Value |
|---|---|
| SKU | SCL-LC-12275 |
| Other names | Sodium thiosulphate, sodium thiosulfate |
| Formula (anhydrous) | Na2S2O3 |
| Formula (pentahydrate) | Na2S2O3·5H2O |
| Hydrate check | Confirm the form before weighing; formula weights differ |
| Chemical class | Inorganic thiosulphate salt; reducing agent |
| Precautions | Do not ingest, inhale dust, heat unnecessarily or mix with acids outside an approved experiment |
| Protective equipment | Lab coat, gloves, eye protection |
| Dispensing | Clean, dry spatula or weighing tool |
| Storage | Tightly closed in a cool, dry, ventilated chemical store |
| Keep away from | Acids, strong oxidisers, food items, unlabelled containers |
| Waste | Institutional chemical-waste rules |
| Pack contents | 1 pack of sodium thiosulphate |
| Documents | Safety Data Sheet, batch label, shelf-life detail, transport documents |
| Grade, assay and pack size | Confirmed on the label and quotation |
| Supplied by | Science Lab Supplies, Ambala, India |
Applications and Experiments for Sodium Thiosulphate
Thiosulphate can be used to titrate iodine in iodometric analysis and, where the syllabus includes it, in the thiosulphate-acid reaction for reaction-rate studies. It also illustrates reducing-agent behaviour and supports supervised dechlorination or iodine-quenching demonstrations under institutional SOPs.
- 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, made up in a Graduated Flask with Fixed Stoppers after weighing on a Chemical Semi-Analytical Balance.
- 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. A quote can be started on the contact page or by placing the reagent in the enquiry cart; tender buyers will find the process on 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, with the hydrate form checked before any solution is weighed out.
Who supplies the Sodium Thio Sulphate?
The salt is provided by Science Lab Supplies of Ambala, a laboratory chemicals supplier in India. Quotations for schools, colleges and distributors state the hydrate form and pack size before anything is dispatched.
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, and wear gloves and Safety Glasses.
Related Iodometry Reagents and Titration Glassware
An iodometric titration needs an iodine source, an iodide and an oxidant as well as thiosulphate, plus a stoppered flask and a burette. These Lab Chemicals and Chemistry Lab items complete that redox set and can be placed on one quotation with the thiosulphate.
- Potassium Iodide — iodide salt for iodine solution preparation and starch-iodine testing.
- Iodine Crystals — elemental halogen crystals for iodine solutions, sublimation and redox chemistry.
- Potassium Dichromate — chromium(VI) oxidising agent for redox titration demonstrations in trained labs.
- Hydrogen Peroxide 6% Analytical Solution — 6% H2O2 oxidising solution for oxidation and decomposition lessons.
- Bromine Water — aqueous bromine reagent for halogen chemistry teaching.
- Iodine Flask — borosilicate flask with ground joint and stopper, in 250 and 500 capacities with 24/29 or 29/32 joints.
- Burette — 50 ml glass burette with a bottom stopcock valve for titration.
Browse the full Lab Chemicals range, the Chemistry Lab range, or all school lab equipment.
Last updated: 22 October 2026
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