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Product Name: Selenium Enriched Yeast
Synonyms: Selenized Yeast, Organic Selenium Yeast
Manufacturer: [Company Name]
Recommended Uses: Animal Feed Additive, Dietary Supplement Ingredient
Contact Information: [Company Address, Phone, Emergency Contact Email]
CAS Number: 12659-43-7
Physical Appearance: Fine, light to dark tan powder
Odor: Slight yeast smell
Hazard Class: None under GHS classification
Critical Hazards: Inhalation of dust may irritate the respiratory system; ingestion in high doses can lead to selenium toxicity; direct eye contact can cause discomfort; not classified as flammable or explosive
Risk Phrases: May be harmful if swallowed in large amounts; prolonged exposure may affect selenium balance in the body
Saccharomyces cerevisiae: 90-99% (Carrier Yeast)
Selenium Content (as selenomethionine and other selenium compounds): 1-3%
Other Trace Elements: Small quantities of sodium, potassium, magnesium, trace minerals inherent to yeast
No Hazardous Impurities Identified
Inhalation: Move person to fresh air; seek medical attention if symptoms persist
Eye Contact: Rinse cautiously with clean water for at least 15 minutes; remove contact lenses if present; consult physician if irritation continues
Skin Contact: Wash off with soap and water; seek medical advice for irritation or allergic reaction
Ingestion: Rinse mouth with water; do not induce vomiting; consult a doctor or poison center if large amounts are ingested or if feeling unwell
Flammability: Not easily combustible, but dust may form explosive mixture in air
Suitable Extinguishing Media: Water spray, foam, dry chemical, or carbon dioxide
Unsuitable Media: Direct water jet on burning powder may spread material
Combustion Products: Carbon monoxide, carbon dioxide, selenium oxides
Protective Equipment: Wear full protective gear including self-contained breathing apparatus
Further Actions: Move containers away from fire if safe; prevent runoff into sewers or waterways
Personal Precautions: Avoid generating dust; use protective mask, gloves, goggles
Environmental Precautions: Prevent release to drains, surface, and groundwater
Method for Cleanup: Sweep or vacuum up spills without making dust; place in proper waste container; wash contaminated area thoroughly
Disposal: Dispose material collected as per disposal regulations
Handling Recommendations: Avoid breathing dust; wear suitable respirator and gloves; keep away from food, drink, and animal feed
Hygiene Practices: Wash hands after handling, before eating, drinking, or smoking
Storage Recommendations: Store in cool, dry, well-ventilated area; keep containers tightly closed; protect from heat, direct sunlight, and moisture; segregate from incompatible materials like acids and strong oxidizers
Packaging: Use food-grade or approved containers with tamper-evident seals
Occupational Exposure Limits: Selenium exposure limit (OSHA/NIOSH): 0.2 mg/m³ (TWA)
Engineering Controls: Use local exhaust ventilation to minimize dust
Personal Protection: Safety glasses, NIOSH-approved dust mask, gloves, long-sleeve work clothes
Workplace Controls: Provide eyewash stations and safety showers near handling location
Physical State: Fine, free-flowing powder
Color: Tan to light brown
Odor: Yeasty, mild odor
pH (1% solution): Typically 4.5–6.0
Bulk Density: 0.45–0.65 g/cm³
Melting Point/Freezing Point: Not determined
Solubility in Water: Partially soluble (disperses easily)
Flash Point: Not applicable
Partition Coefficient (n-octanol/water): Not available
Chemical Stability: Stable under normal storage and use
Reactivity: No dangerous reactions under normal conditions
Conditions to Avoid: High humidity, direct sunlight, contact with strong oxidizers and acids
Decomposition Products: Selenium oxides, carbon oxides
Incompatible Materials: Strong oxidizing agents, mineral acids
Acute Toxicity: High exposure may result in selenosis
Symptoms of Overexposure: Nausea, garlic odor on breath, hair loss, fatigue, irritability
Chronic Effects: Prolonged or repeated exposure may interfere with body selenium levels and impact organ function
Carcinogenicity: Not listed as carcinogen by IARC, NTP, OSHA
Mutagenicity: No known mutagenic effects for organic selenium in yeast form
Reproductive Effects: Excessive intake may affect fertility; animal studies indicate potential for fetal toxicity at high doses
Routes of Exposure: Inhalation, ingestion, direct skin and eye contact
Ecotoxicity: Selenium compounds can be toxic to aquatic organisms in high concentrations
Persistence and Degradability: Yeast component degrades naturally; selenium may persist in soils and water
Bioaccumulation: Selenium bioaccumulates in aquatic environments
Mobility in Soil: Moderate; organic selenium binds to soil particles
Other Effects: Release into waterways should be avoided to prevent harm to aquatic life
Waste Treatment Methods: Dispose of in accordance with local, regional, and national regulations
Recommended Disposal: Landfill or incinerate only in approved facilities
Don’t release into the environment; do not flush to sewer
Contaminated packaging: Dispose of as product waste; follow state and federal guidelines
Special Precautions: Wear protective equipment during disposal operations
UN Number: Not regulated
Transport Hazard Class: Not classified as dangerous for transport
Packing Group: Not applicable
Labels: No special transport marking required
Proper Shipping Name: Selenium Enriched Yeast
Special Transport Precautions: Secure packaging to prevent rupture; keep container upright during transportation
IMDG, IATA, ADR: No restrictions
U.S. Federal Regulations: Not subject to TSCA; considered GRAS (generally recognized as safe) for intended use
EU Regulations: Complies with EC regulation on feed additives; not classified as hazardous under regulation (EC) No 1272/2008
Canadian Regulations: Listed on Domestic Substances List; not regulated as dangerous material
Other National Requirements: Check local, state, and federal laws before use or disposal
Workplace Labeling: Keep package labeled with product identifier and hazard information
Inventory Status: All components listed or exempted
