Sodium selenite pentahydrate
Sodium selenite pentahydrate (CAS: 26970-82-1), with the chemical formula Na2SeO3 · 5H2O and a molecular weight of 263.01 g/mol, is a vital inorganic compound. This white crystalline solid is primarily employed as an analytical reagent and finds significant use in various scientific applications, including cell biology and nutritional research, owing to selenium's role as an essential trace element and antioxidant.
Analytical Chemistry
Utilised as a reagent in analytical procedures and chromatography. Its properties make it suitable for specific detection and quantification methods in laboratory settings.
Cell Biology Research
Investigated for its role in cellular processes, particularly concerning selenium's function as an essential micronutrient and its involvement in antioxidant defence mechanisms within cells.
Nutrition and Biochemistry
Serves as a source of selenium in studies related to nutrition, dietary supplements, and biochemical pathways. Selenium is critical for enzyme function and overall health.
Material Science
Can be used in the synthesis of selenium-containing materials and compounds for specialised applications in material science research.
| Molecular weight | 263.01 |
|---|---|
| Linear formula | Na2SeO3 · 5H2O |
| Assay | ≥99.0% (RT) |
| Grade | puriss. p.a. |
| Impurities tested | ≤0.005% total nitrogen (N) |
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. |
| Cation traces | Ca: ≤20 mg/kgCd: ≤5 mg/kgCo: ≤5 mg/kgCr: ≤5 mg/kgCu: ≤5 mg/kgFe: ≤10 mg/kgK: ≤50 mg/kgMg: ≤5 mg/kgMn: ≤5 mg/kgNi: ≤5 mg/kgPb: ≤5 mg/kgZn: ≤5 mg/kg |
| Anion traces | chloride (Cl-): ≤50 mg/kgselenate, sulfate (as SO42-): ≤50 mg/kg |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets 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 pentahydrate used for?
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Sodium selenite pentahydrate is primarily used as an analytical reagent, in cell biology research, and in nutrition research due to selenium's role as an essential trace element and antioxidant.
What are the CAS number and chemical formula for Sodium selenite pentahydrate?
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The CAS number is 26970-82-1 and the chemical formula is Na2SeO3 · 5H2O.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Sodium selenite pentahydrate with a puriss. p.a. grade and an assay of ≥99.0% (RT). We do not represent this product as USP, BP, or EP grade.
How should Sodium selenite pentahydrate be handled safely?
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Sodium selenite pentahydrate is highly toxic if swallowed, a toxic respiratory irritant, and can cause an allergic skin reaction. It is also toxic to aquatic life with long-lasting effects. Contact with acids liberates toxic gas. Always use appropriate personal protective equipment, including eyeshields, gloves, and a respirator, and handle in a well-ventilated area. Refer to the Safety Data Sheet for full handling precautions.
How is Sodium selenite pentahydrate packed and shipped by TSS?
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Tech Serve Solutions securely packs and exports chemicals according to international shipping regulations, ensuring product integrity and safety during transit.
How can I request a sample or quote for Sodium selenite pentahydrate?
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To request a sample or a quotation, please use the contact form on our website or email our sales department directly, specifying the product name and quantity required.
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