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Product Name: Sodium Tellurite
Chemical Formula: Na2TeO3
Synonyms: Disodium tellurite, Tellurous acid sodium salt
CAS Number: 10102-20-2
Recommended Use: Laboratory reagent, chemical synthesis, metallurgy, glass manufacturing
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Classification: Acute toxicity (Oral, Inhalation, Dermal), Eye irritation, Specific target organ toxicity
GHS Label Elements: Danger, skull and crossbones pictogram, exclamation mark
Hazard Statements: Harmful if inhaled or swallowed; causes severe skin burns and eye damage; suspected of damaging fertility or the unborn child; may cause respiratory irritation; toxic to aquatic life
Precautionary Statements: Avoid breathing dust, use protective gloves and clothing, wash hands thoroughly after handling, store locked up, use only outdoors or in a well-ventilated area
Routes of Exposure: Inhalation, ingestion, skin and eye contact
Symptoms: Irritation of respiratory tract, headache, nausea, vomiting, abdominal pain, skin and eye irritation
Chemical Name: Sodium Tellurite
CAS Number: 10102-20-2
Concentration: 98-100%
Impurities/Additives: None known for pure product form
Molecular Weight: 221.6 g/mol
Other Components: No significant percentages of other substances in commercial-grade product
Inhalation: Remove to fresh air, seek immediate medical attention, provide oxygen if breathing is difficult
Skin Contact: Remove contaminated clothing, flush skin with plenty of water for at least 15 minutes, get medical attention if irritation persists
Eye Contact: Rinse thoroughly with plenty of water for at least 15 minutes, lift eyelids occasionally, seek immediate medical help
Ingestion: Do not induce vomiting, rinse mouth with water, get immediate medical help
Note to Physicians: Treat symptomatically, monitor for potential respiratory complications and systemic toxicity associated with tellurium compounds
Suitable Extinguishing Media: Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide
Unsuitable Extinguishing Media: Do not use strong water jet
Hazardous Combustion Products: Tellurium oxides, sodium oxides, possible toxic fumes
Special Protective Equipment for Firefighters: Use self-contained breathing apparatus and full protective gear
Fire/Explosion Hazards: Nonflammable as a solid, may generate toxic gases in a fire
Personal Precautions: Evacuate area, ventilate, avoid contact with skin, eyes and clothing, wear suitable personal protective equipment
Environmental Precautions: Prevent further leakage or spillage if safe to do so, do not let product enter drains or watercourses
Methods for Containment: Contain spillage, collect and place in suitable containers for disposal, avoid raising dust
Cleanup Procedures: Use non-sparking tools, clean affected area thoroughly after material pickup, dispose of waste in accordance with regulations
Handling: Handle in a chemical fume hood with adequate ventilation, avoid inhaling dust, prevent skin or eye contact, use acid-resistant tools
Safe Storage Conditions: Store in a tightly sealed container in a cool, dry, well-ventilated location, keep away from incompatible substances such as strong acids and oxidizing agents
Special Storage Requirements: Keep away from direct sunlight, sources of heat and ignition, store away from foodstuffs and animal feed
Safe Practices: Always practice good hygiene, do not eat, drink or smoke in work area, ensure containers are clearly labeled
Exposure Limits: OSHA PEL: Not established; ACGIH TLV: Not established; Manufacturer recommends minimizing all exposure
Engineering Controls: Use local exhaust ventilation, safety shower, and eye-wash station nearby
Personal Protection: Wear chemical-resistant gloves, safety goggles, lab coat or coveralls, use proper respirator if ventilation is inadequate
Other Protective Measures: Remove contaminated clothing before reuse or laundering, wash hands before breaks, after handling, at end of shift
Appearance: White or off-white crystalline powder
Odor: Odorless
Odor Threshold: Not applicable
pH: 10-12 (1% aqueous solution)
Melting Point: 900°C (decomposes)
Boiling Point: Decomposes
Flash Point: Not flammable
Flammability: Not applicable
Vapor Pressure: Negligible at room temperature
Density: 4.2 g/cm³
Solubility: Soluble in water
Partition Coefficient (n-octanol/water): Not determined
Evaporation Rate: Not applicable
Autoignition Temperature: Not flammable
Decomposition Temperature: 900°C
Viscosity: Not applicable
Chemical Stability: Stable under recommended conditions of storage and handling
Incompatible Materials: Strong acids, strong oxidizing agents, reducing agents, organic materials
Conditions to Avoid: Moisture, extreme heat, incompatible substances
Hazardous Decomposition Products: Tellurium oxides, sodium oxides, toxic metal fumes
Reactivity: Reacts with acids to produce tellurium dioxide and toxic gases
Polymerization: Hazardous polymerization does not occur
Routes of Exposure: Inhalation, ingestion, skin, eye
Acute Toxicity: Oral LD50 (rat): 120 mg/kg
Inhalation: May cause respiratory tract irritation, cough, shortness of breath
Skin Contact: Causes irritation, potential for redness, burning, blisters
Eye Contact: Severe irritation, redness, pain, possible corneal injury
Ingestion: Nausea, vomiting, abdominal cramps, metallic taste, garlic breath, possible systemic effects
Chronic Effects: Prolonged contact may cause tellurium poisoning: headache, drowsiness, metallic taste, bluish-black lines on gums
Carcinogenicity: No classification by IARC, NTP, or OSHA, but handle with caution
Other Data: Not mutagenic in standard tests, but no long-term reproductive studies available for sodium tellurite
Ecotoxicity: Highly toxic to aquatic organisms, causes long-term adverse effects in the aquatic environment
Aquatic Toxicity: Acute LC50 values (fish, daphnia) not well defined, anticipated to be low; avoid release into environment
Persistence and Degradability: Inorganic compound, not expected to degrade rapidly in natural waters
Bioaccumulative Potential: Not expected to bioaccumulate significantly, but can be absorbed by aquatic organisms
Mobility in Soil: Readily dissolves and migrates in water, may leach to groundwater from spills
Other Adverse Effects: No data on ozone depletion, photochemical ozone creation, or endocrine disruption
Disposal Method: Collect and dispose of in accordance with local, regional, and national hazardous waste regulations
Do Not: Flush down drain, pour into waterways, leave in open landfill
Contaminated Packaging: Dispose of containers as hazardous waste unless thoroughly decontaminated
Special Precautions for Disposal: Secure waste in closed, labeled containers, segregate from incompatible substances
Regulatory Requirements: Comply with environmental regulations, consult state and local agencies for specific requirements
UN Number: 3288
UN Proper Shipping Name: Toxic solid, inorganic, n.o.s. (Contains Sodium Tellurite)
Transport Hazard Class: 6.1 (Toxic substances)
Packing Group: III
Label for Transport: Toxic
Special Precautions: Keep container upright and sealed, avoid rough handling, vehicle driver must be informed of dangerous nature
Environmental Hazards: Reportable quantity for environmental release may apply in some jurisdictions
Transport in Bulk: Follow all ADR/RID/IMO/IATA requirements
OSHA: Considered hazardous under OSHA Hazard Communication Standard 29 CFR 1910.1200
TSCA: Listed
SARA 313: Not subject to reporting
SARA 302/304: Not an extremely hazardous substance
RCRA: Waste code may apply depending on contamination
California Proposition 65: No listed chemicals
EU Regulation (REACH): Registered as a substance of concern, subject to authorization and restrictions
Other International Regulations: Compliance required with local jurisdictions, including workplace safety, environmental, and transport authorities
