Sodium selenite
Sodium selenite (CAS 10102-18-8), molecular formula Na2SeO3, is a high-purity chemical supplied by Tech Serve Solutions for chemical synthesis applications, to pharmacopoeia specification (USP, BP, EP). Every batch is tested and ships with a Certificate of Analysis; MSDS and technical data sheets are available on request. Tech Serve Solutions has supplied laboratory reagents, fine chemicals and pharmaceutical intermediates worldwide since 1998.

| Molecular weight | 172.94 |
|---|---|
| Linear formula | Na2SeO3 |
| Assay | ≥98% |
| Form | powder |
| Loss on drying | ≤0.5% loss on drying, 200 °C |
| Application | Sodium selenite is commonly used as a source of selenium in biological research, where selenium is an essential trace element that is normally provided by serum. Selenium is present in selenoproteins such as glutathione peroxidase and thioredoxin reductase, which contain the selenium analog of cysteine, selenocysteine. In particular, glutathione peroxidase has a role in detoxification in vivo as a scavenger of peroxides. Sodium selenite has been utilized in studies of cell proliferation and cancer research. It has been used to alter gene expression in HepG2 cells as analyzed by cDNA microarrays. Sodium selenite can inhibit zinc finger protein/DNA interactions. Sodium selenite has been shown to alter mitochondrial membrane potentials and thus potentially contribute to apoptosis.This product is cell culture tested (0.005 mg/L) and is appropriate for use in cell culture applications. |
| Suitability | suitable for cell culture |
| Melting point | >350 °C(lit.) |


Hazard statements
- H300Fatal if swallowed
- H317May cause an allergic skin reaction
- H331Toxic if inhaled
- H411Toxic to aquatic life with long-lasting effects
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P264Wash thoroughly after handling
- P273Avoid release to the environment
- P280Wear protective gloves, clothing and eye/face protection
- P301IF SWALLOWED
- P311Call a POISON CENTER or doctor
| Protective equipment | Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 2630 6.1/PG 1 |
| Water hazard class (WGK, DE) | 2 |
| Hazard codes (EU) | T+,N |
| Risk statements (R) | 23-28-31-43-51/53 |
| Safety statements (S) | 28-36/37-45-61 |
| Supplemental hazards | Contact with acids liberates toxic gas. |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Product Line | BioReagent |
|---|
Documentation
Supplied to USP, BP and EP standards. Every batch ships with a Certificate of Analysis (assay, identity, purity); MSDS and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Sodium selenite?
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Sodium selenite (CAS 10102-18-8), molecular formula Na2SeO3, is a high-purity chemical supplied by Tech Serve Solutions for chemical synthesis applications, to USP, BP and EP standards.
What grades of Sodium selenite does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Sodium selenite in USP, BP, EP and reagent/AR grades. Custom specifications for nutraceutical or specialty pharmaceutical applications are available — contact our technical sales team.
What is the CAS number and molecular formula of Sodium selenite?
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Sodium selenite has CAS number 10102-18-8 and molecular formula Na2SeO3. Full specifications appear in the table above and in the Certificate of Analysis.
What is the typical minimum order quantity and lead time for Sodium selenite?
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Sample quantities are available for technical evaluation; bulk MOQ depends on grade and packaging. In-stock material typically ships in 7–10 working days; custom-spec orders take 3–4 weeks. Tech Serve Solutions ships worldwide with full export documentation.
Do you provide a Certificate of Analysis (CoA) with each shipment?
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Yes. Every batch of Sodium selenite ships with a Certificate of Analysis covering assay, identity and purity tests, plus pharmacopoeia conformance where applicable. MSDS and TDS documents are available on request before order placement.
How should Sodium selenite be stored?
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Store Sodium selenite in its original sealed container in a cool, dry place away from direct sunlight and incompatible materials, in line with the storage guidance on the Safety Data Sheet. Reseal between dispensings.
What is Sodium selenite used for?
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Sodium selenite is used in chemical synthesis applications across pharmaceutical, research and industrial settings. Our technical team can advise on suitability for your specific process.
How do I request a quote for Sodium selenite?
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Request a quote with your required grade, quantity and destination via https://www.techservesolutions.in/contact or email info@techservesolutions.in. We respond with specifications, a Certificate of Analysis and pricing.
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