Sodium selenite pentahydrate

Sodium selenite pentahydrate

Produktname Sodium Selenite Pentahydrate
CAS-Nummer 26970-82-1
Molekülformel Na2SeO3·5H2O
Molekulargewicht 263.01 g/mol (anhydrous basis: 172.94 g/mol)
Aussehen White crystalline powder or colorless crystals
Assay ≥98.0% (titration)
Selenium Content ≥30.0% (calculated on dried basis)
Trocknungsverlust 32.0–36.0% (water of crystallization)
Löslichkeit Freely soluble in water; insoluble in ethanol
Schwermetalle ≤ 10 ppm
Verpackung 25 kg fiber drum with inner polyethylene bag

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Sodium selenite pentahydrate Structure

Synonyms: Sodium selenite pentahydrate, Disodium selenite pentahydrate, Selenious acid disodium salt pentahydrate, Sodium selenium oxide pentahydrate, Na2SeO3·5H2O

Sodium selenite pentahydrate is the hydrated, inorganic form of sodium selenite, a selenium(IV) salt that appears as white, water-soluble crystals. It is manufactured by reacting selenium dioxide with sodium hydroxide under controlled conditions, followed by crystallization to yield the pentahydrate. The material is supplied as a high-purity grade suitable for pharmaceutical, nutraceutical and veterinary applications.

As a highly bioavailable source of selenium, it serves as a critical trace element in total parenteral nutrition (TPN) formulations, dietary supplements, and animal feed premixes. Its well-defined stoichiometry and rapid dissolution profile make it a preferred choice for formulators who require precise selenium dosing and consistent analytical behavior.

Product Highlights

  • High purity: ≥98.0% assay with selenium content ≥30.0%, ensuring accurate formulation.
  • Consistent quality: Manufactured under cGMP conditions with full traceability from raw material to finished batch.
  • Regulatory support: Complies with USP/EP/BP monographs; documentation for regulatory filings available upon request.
  • Reliable supply: Annual production capacity of 50 metric tons, with stock available for immediate shipment.
  • Technical service: Experienced team provides formulation guidance and analytical method transfer support.
  • Flexible packaging: Bulk quantities and custom pack sizes to meet production scale requirements.

Anwendungen

  • Total parenteral nutrition (TPN) solutions as a selenium source.
  • Dietary supplements and multivitamin/mineral formulations.
  • Animal feed premixes and veterinary injectables for selenium supplementation.
  • Analytical reagent for selenium determination and as a catalyst in organic synthesis.
  • Cell culture media component and research applications in selenium metabolism studies.

Technische Daten

Parameter Technische Daten
Assay (as Na2SeO3·5H2O) ≥98,01 TP3T
Selenium (Se) content ≥30.0% (dried basis)
Aussehen White crystalline powder
Loss on drying 32.0–36.0%
Heavy metals ≤ 10 ppm
Wasserlöslichkeit Freely soluble

Ordering & Supply

  • Verpackung: 25 kg fiber drum with double polyethylene liners; custom packaging available.
  • Mindestbestellmenge: 1 kg for sample evaluation; 25 kg for commercial orders.
  • Lieferzeit: 3–5 Werktage (Lagerware)
  • Dokumentation: COA, MSDS, TDS, and regulatory support packages (USP/EP/BP) provided.

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