Sodium Thiosulfate, Anhydrous, USP Grade


Sodium Thiosulfate, also known as Disodium Sulfurothioate, Sodium Hyposulfite, Disodium Sulfurothioate, Disodium Thiosulfate, and Sodium Thiosulphate, has the chemical formula Na2S2O3. Its anhydrous form appears as colorless to white hygroscopic crystals or crystalline powder with no odor. It is sparingly soluble in Water and insoluble in Alcohol at ambient conditions. When heated to around 300 o C, it undergoes decomposition emitting highly toxic fumes of Disodium Oxide and Sulfur Oxides. Commercially, it is produced by reacting by-product liquid of Sodium Sulfide synthesis with Sulfur Dioxide. A USP Grade chemical is the one that conforms to the criteria of the United States Pharmacopeia (USP). A substance that has received the USPGrade certification can be used in food, drug, or medical applications. Due to the high purity, our Sodium Thiosulfate, Anhydrous, is a USP Grade chemical. In the United States of America (USA), Lab Alley is selling its high-quality Sodium Thiosulfate, Anhydrous, USP Grade online at


Sodium Thiosulfate, Anhydrous Features:

Assay Min. 97.0%
Calcium (Ca) 0.01%
Heavy Metals (as Pb) 0.001%
Insoluble Matter 0.01%
Sulfide (S) 0.0001%
Common Uses
  • Chemical precursor
  • Chemical analysis
Commercial/industrial applications
  • Medicines and drugs
  • Cosmetics
  • Personal care products
Safety and Handling

Please contact us to request a Safety Data Sheet (SDS) and Certificate of Analysis (COA) for Sodium Thiosulfate Anhydrous USP.

Product Ordering Options, Prices, Bulk Sizes & Shipping

You can buy Sodium Thiosulfate, Anhydrous, USP Grade for $36 online, locally or call 512-668-9918 to order bulk sizes. Your packages will be shipped in 1-2 business days via UPS or LTL. Lab Alley Brand Sodium Thiosulfate, Anhydrous, USP Grade is for sale in bulk sizes and is in stock. Handy individual consumer size containers for DIY projects are leak resistant. This high quality compound is made in America. It is a high purity chemical substance that is ideally suited for scientific, development, analytical, clinical, medical, research and testing applications. Sodium Thiosulfate, Anhydrous, USP Grade is delivered quickly to laboratories, factories and businesses in safe chemical resistant containers. 

Manufacturing size drums, IBC totes, pallet loads and bulk industrial production scale quantities are shipped from Lab Alley's U.S.-based distribution centers by LTL freight carriers. Request a discounted wholesale price quote, here. Read customer and product reviews, here. Read return and refund policies, here. Lab Alley, founded in 2013, is a reliable Sodium Thiosulfate, Anhydrous, USP Grade supplier and distributor headquartered near Austin, Texas. Lab Alley was a 2021 Inc. 5000 honoree. Email if you have questions about buying Sodium Thiosulfate, Anhydrous, USP Grade. 

Download the Sodium Thiosulfate, Anhydrous, USP Grade MSDS/SDS to get safety tips and health hazard information. Sodium Thiosulfate, Anhydrous, USP Grade should be carefully handled, stored in a cool dry place and chemical waste should be disposed of properly and safely.

Sodium Thiosulfate, Anhydrous, USP Grade Retail Prices, Package Sizes And Bulk Quantity Ordering Options: 500g $36, 2.5kg $144, 12kg $273, 25kg $519.

Sodium Thiosulfate, Anhydrous, USP Grade

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Sale price $36.00
Sale price $144.00
Sale price $273.00
Sale price $519.00

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Peter B.
United States United States

Sodium thiosulfate

Used in a water sensitive reaction, this anhydrous product was just what I needed.

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