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Sodium Selenite 45%
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Sodium Selenite is an inorganic selenium compound with the formula Na₂SeO₃. In its commercial 45% concentration, it is typically supplied as a colorless to slightly yellow aqueous solution or as a crystalline solid with 45% selenium content. It is primarily used as a micronutrient additive in animal nutrition, a reagent in the pharmaceutical and glass industries, and in various research applications. Highly bioavailable, it serves as a key selenium source where controlled selenium supplementation is critical. This 25kg product offers precise dosing, stability, and ease of handling in industrial and agricultural settings.
Description
Uses
Primary Uses
Animal Nutrition
- Feed Additive for Livestock: Provides essential selenium in poultry, swine, and cattle feed formulations.
- Pet Food Fortification: Supplies trace selenium in dog and cat food.
- Aquaculture Feed: Maintains optimal selenium levels in fish and shrimp diets.
- Premix Manufacturing: Used in vitamin-mineral premixes for commercial feed production.
Pharmaceutical & Nutraceutical Industry
- Dietary Supplements: Source of selenium in tablets, capsules, and liquid formulations.
- Parenteral Nutrition: Occasionally used in injectable selenium preparations under medical supervision.
- Topical Formulations (Antifungal/Skin health): Included in certain dermatological preparations for its antimicrobial properties.
Glass & Ceramics Industry
- Glass Manufacturing: Acts as a decolorizing agent to neutralize green tints caused by iron.
- Red-Colored Glass Production: Imparts pink or red coloration in specialty glass and enamels.
Chemical & Industrial Applications
- Metal Alloy Additive: Used in specialty steels and brasses for improved machinability.
- Electronics & Semiconductors: Occasionally used in selenium-containing compounds for photovoltaic or rectifier applications.
- Pigments & Dyes: Trace amounts used in certain inorganic pigment formulations.
Secondary Uses
Water Treatment & Environmental Applications
- Nutrient Additive in Bioremediation: Supports microbial activity in selenium-deficient remediation environments.
- Trace Element Balancing in Hydroponics: Occasionally used to supplement selenium in nutrient solutions.
Laboratory & Research
- Cell Culture & Biotech Research: Essential trace element in media for mammalian and microbial cultures.
- Analytical Chemistry Reagent: Employed in certain redox titrations or as a selenium standard.
- Toxicology & Nutrition Studies: Used in controlled studies on selenium metabolism and deficiency.
Agriculture (Plant Nutrition)
- Soil Fertilizer (Micro-dose Application): In selenium-deficient regions, applied in trace amounts to increase plant selenium uptake.
- Foliar Application (Very limited): Applied in diluted form to crops to enrich selenium content for human/animal consumption.
Veterinary & Animal Health
- Injectable Selenium-Vitamin E Therapy: Used under veterinary supervision for selenium-responsive disorders (e.g., white muscle disease).
Mineral Licks & Blocks: Incorporated into solid supplements for grazing animals.
PRODUCT KEY FEATURES
Basic Identification Attributes
- Chemical Name (IUPAC): Disodium selenite
- Common/Trade Name: Sodium Selenite
- CAS Number: 10102-18-8
- HS Code: 2842.90.00
- Synonyms: Disodium selenite, Sodium salt of selenious acid
Physical & Chemical Properties
- Physical State: Typically an aqueous solution or crystalline powder
- Color & Odor: Colorless to pale yellow; odorless
- Concentration: 45% active Sodium Selenite by weight (in solution)
- Solubility: Freely soluble in water
- Density (solution): ~1.45–1.50 g/cm³
- pH (solution): 8.0–9.5
- Molecular Weight: 172.94 g/mol (anhydrous Na₂SeO₃)
Safety & Hazard Attributes
- GHS Classification: Acute Toxicity Oral (Category 2), Aquatic Acute (Category 1), Aquatic Chronic (Category 1)
- Toxicity: LD₅₀ (oral, rat) ≈ 3.9 mg/kg
- Exposure Limits: OSHA PEL: 0.2 mg Se/m³ (as selenium)
- Carcinogenicity: Not classifiable (IARC Group 3); regulated due to narrow margin between essentiality and toxicity
Storage & Handling Attributes
- Storage Conditions: Store in a cool, dry, well-ventilated area; keep container tightly closed
- Container Type: 25kg HDPE drums, IBCs, or lined steel drums for bulk liquid
- Shelf Life: 12–24 months under recommended conditions
- Handling Precautions: Avoid skin and eye contact; minimize aerosol or mist formation
Regulatory & Compliance Attributes
- REACH Registered
- Complies with:
- EU Feed Additive Register (EC No. 1831/2003)
- US FDA regulations (21 CFR 573.920 – Selenium in animal feeds)
- USP Grade Available (for pharma/nutraceutical use)
- UN Number: Not classified as a dangerous good for transport in solution
- TSCA Listed
Environmental & Health Impact
- Biodegradability: Inorganic compound; not biodegradable
- Ecotoxicity: Highly toxic to aquatic life
- Bioaccumulation: Potential in aquatic organisms; requires controlled disposal
Soil Impact: Persistent in soil if not managed; risk of phytotoxicity at high concentrations
SAFETY HANDLING PRECAUTIONS
Safety Handling Precautions
- PPE Required: Chemical-resistant gloves, safety goggles, lab coat, and dust or mist mask (as applicable)
- Handling Guidelines: Use only in well-ventilated areas; avoid spills into environment
- Storage Measures: Keep away from strong acids, oxidizers, and incompatible metals
First Aid Measures
- Inhalation: Move to fresh air immediately; seek medical attention if symptoms occur
- Skin Contact: Rinse with water and remove contaminated clothing
- Eye Contact: Flush eyes with water for at least 15 minutes; seek medical advice
- Ingestion: Rinse mouth; do NOT induce vomiting; seek urgent medical attention
Firefighting Measures
- Fire Hazards: Not flammable; may decompose at high temperatures producing toxic selenium fumes
- Extinguishing Media: Water spray, COâ‚‚, dry chemical
- Hazardous Combustion Products: Selenium oxides, toxic fumes
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