Material Safety Data Sheet: Chelated Selenium

Identification

Product Name: Chelated Selenium
Chemical Formula: C10H12N2Na2O8Se (example for sodium selenate chelate)
Synonyms: Selenium Amino Acid Chelate, Selenium Proteinate, Selenomethionine Complex
Manufacturer: [Enter Manufacturer's Name]
Address: [Enter Address]
Telephone: [Enter Emergency Number]
Recommended Use: Animal Feed Supplement, Nutritional Additive
Restrictions on Use: For industrial or professional use, not for direct human consumption

Hazard Identification

Classification: Acute Toxicity – Oral (Category 3), Acute Toxicity – Inhalation (Category 4), Eye Irritation (Category 2B)
GHS Label Elements: Toxic if swallowed, Harmful if inhaled, Causes eye irritation
Pictograms: Skull & Crossbones, Exclamation Mark
Signal Word: Danger
Hazard Statements: May cause organ damage through prolonged or repeated exposure, Toxic to aquatic life
Precautionary Statements: Avoid breathing dust, Wash hands thoroughly after handling, Do not eat, drink, or smoke when using

Composition / Information on Ingredients

Main Component: Chelated Selenium compound (Selenomethionine or Selenium Amino Acid Complex)
Selenium Content: 0.2% – 2% (depending on formulation)
Other Ingredients: Amino acids (glycine, methionine), carriers like dextrose, excipients
CAS Number – Selenium chelate: 13747-02-9 (example, varies by chelation agent)
Impurities: May contain trace metals (<0.1%), moisture content up to 5%

First Aid Measures

Inhalation: Move to fresh air, seek medical attention if cough or breathing difficulty appears
Skin Contact: Remove contaminated clothing, wash skin with soap and water, consult doctor for irritation
Eye Contact: Rinse eyes carefully with plenty of water, remove contact lenses if present, continue rinsing, seek medical help if irritation persists
Ingestion: Rinse mouth, do not induce vomiting, contact poison control or doctor, watch for nausea or drowsiness
Important Symptoms: Headache, dizziness, metallic taste, stomach upset, irritability
Medical Attention: Provide product label to doctor, support symptomatic treatment

Fire-Fighting Measures

Suitable Extinguishing Media: Water spray, dry powder, foam, carbon dioxide
Unsuitable Media: Strong water jets
Hazardous Combustion Products: Selenium oxides, nitrogen oxides, sodium oxide fumes
Special Personal Protection: Chemical resistant suit, self-contained breathing device
Explosion Data: Dust may form explosive mixtures with air in rare circumstances
Fire Fighting Instructions: Move containers away if safe, avoid inhaling fumes, contain run-off water

Accidental Release Measures

Personal Precautions: Avoid inhalation or contact with skin and eyes, ventilate area
Protective Equipment: Nitrile gloves, safety goggles, mask or respirator, lab coat
Spill Response: Scoop up spilled material with minimal dust generation, place in sealed container for disposal
Environmental Precautions: Prevent entry into drains or surface water, cover drains, report major spills
Clean-up Methods: Dampen powder to reduce dust, wipe surfaces with damp cloth, dispose of waste according to local guidelines

Handling and Storage

Precautionary Handling: Avoid dust formation, handle with care in ventilated spaces, use personal protective equipment
Safe Storage: Keep container tightly closed, store in original packaging, dry and cool location, away from chemicals, acids, strong oxidizers
Incompatible Materials: Strong acids, oxidizing agents, heavy metals, reducing agents
Special Measures: Use only outdoors or in well-ventilated areas, keep away from food, drinks, and feed

Exposure Controls and Personal Protection

Occupational Exposure Limit – Selenium: 0.2 mg/m³ (ACGIH TLV)
Engineering Controls: Use local exhaust ventilation, process enclosures
Personal Protection: Safety goggles, gloves (nitrile or latex), dust mask or respirator (NIOSH-approved), protective clothing
Hygiene Measures: Wash hands after handling, change contaminated clothing, prevent dust accumulation
Environmental Controls: Use procedures to control dust, prevent contamination of watercourses

Physical and Chemical Properties

Appearance: White to light yellow powder
Odor: Slight characteristic odor
Odor threshold: Not determined
pH: 4 – 8 (1% solution)
Melting Point: Decomposes before melting
Boiling Point: Not applicable, decomposes
Solubility: Soluble in water
Specific Gravity: 1.3 – 1.6 (at 20°C)
Flash Point: Not flammable
Vapor Pressure: Not determined
Partition Coefficient: Not determined
Evaporation Rate: Not applicable
Decomposition Temperature: Above 250°C (may release toxic fumes)

Stability and Reactivity

Chemical Stability: Stable under normal conditions
Reactivity: Reacts with strong oxidizers and acids
Hazardous Reactions: May release toxic selenium fumes when heated with acids or oxidizers
Conditions to Avoid: Excess heat, humidity, open flames, incompatible materials
Incompatible Materials: Acids, strong oxidants, reducing agents, heavy metal salts
Decomposition Products: Selenium oxides, nitrogen oxides, sodium compounds

Toxicological Information

Acute Toxicity – Oral: LD50 (rat): 7-20 mg/kg (as selenium compound)
Acute Toxicity – Inhalation: LC50 (rat) 2.4 mg/L/4h
Acute Toxicity – Dermal: LD50 (rat): >2,000 mg/kg
Skin Irritation: Mild to moderate irritation possible
Eye Irritation: Causes irritation
Chronic Exposure: Long-term exposure may cause changes in liver and kidney, nervous symptoms, hair loss
Target Organs: Liver, kidneys, nervous system, gastrointestinal tract
Symptoms of Exposure: Metallic taste, fatigue, abdominal pain, garlic breath odor, irritability

Ecological Information

Aquatic Toxicity: Very toxic to aquatic organisms, LC50 (fish): 1 – 5 mg/L
Persistence and Degradability: Limited degradability, selenium accumulates in soil and water
Bioaccumulation: High potential for bioaccumulation in aquatic food chains
Mobility in Soil: Mobile in water, can spread in soil
Ecological Hazard: Risk to aquatic life and birds even at low concentrations
Other Adverse Effects: Selenium may disrupt aquatic ecosystems at excessive concentrations

Disposal Considerations

Waste Disposal: Dispose as hazardous waste following regional, national, and local regulations
Methods of Disposal: Incineration under controlled conditions, landfill for solid waste after treatment
Contaminated Packaging: Treat empty containers as hazardous, do not reuse, dispose safely
Special Precautions: Prevent leakage into drains or watercourses, label waste clearly

Transport Information

UN Number: 3288 (Toxic solid, inorganic, n.o.s. for many selenium compounds)
UN Proper Shipping Name: Toxic Solid, Inorganic, N.O.S. (Chelated Selenium)
Transport Hazard Class: 6.1 (Toxic substances)
Packing Group: II or III (depending on concentration)
Environmental Hazard: Marine pollutant
Special Precautions: Avoid release to waterways, keep containers tightly closed
Land/Rail/Road Transport: Classify under local dangerous goods laws
Air Transport (IATA): Follow restrictions for toxic substances
Sea Transport (IMDG): Observe marine pollutant regulations

Regulatory Information

TSCA (US): Listed
EINECS (EU): Listed
OSHA HazCom: Hazardous chemical
WHMIS (Canada): D1A (Very Toxic), D2B (Other Toxic Effects)
REACH (EU): Requires registration for hazardous chemicals
Other Regulations: Subject to workplace exposure limitations and environmental discharge guidelines across different jurisdictions
Labeling Requirements: Hazard pictograms, precautionary and hazard statements, contact details