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Product Name: Barium Selenite
Chemical Formula: BaSeO3
CAS Number: 13718-59-7
Molecular Weight: 280.29 g/mol
Synonyms: Selenous acid, barium salt
Manufacturer: [Company Information]
Contact Information: [Emergency contact, telephone, address]
Intended Use: Laboratory chemical, reagent, industrial application
GHS Classification: Acute toxicity (oral, inhalation, dermal): Category 2, Environmental hazard: Aquatic Acute 1
Signal Word: Danger
Hazard Statements: Fatal if swallowed, Toxic if inhaled, Causes damage to organs, Very toxic to aquatic environments
Pictograms: Skull and crossbones, exclamation mark, environment
Precautionary Statements: Avoid breathing dust, Keep container tightly closed, Use only outdoors or in a well-ventilated area, Wear protective gloves, protective clothing, eye, and face protection, Wash hands thoroughly after handling, Do not eat, drink or smoke when using this product, Avoid release to the environment
Routes of Exposure: Inhalation, ingestion, skin, and eyes
Target Organs: Gastrointestinal tract, liver, kidney, nervous system
Substance: Barium Selenite
CAS Number: 13718-59-7
Concentration: 100%
Impurities/Additives: No significant quantities present that affect classification
Inhalation: Remove person from exposure, move to fresh air immediately, maintain an open airway, seek medical attention even if no symptoms appear
Skin Contact: Remove contaminated clothing, rinse skin with plenty of water for at least 15 minutes, seek medical attention
Eye Contact: Rinse cautiously with water for several minutes, remove contact lenses, continue rinsing, seek medical attention immediately
Ingestion: Do not induce vomiting, never attempt oral intake rescue for an unconscious person, rinse mouth with water, seek medical attention urgently
Most Important Symptoms/Effects: Burning, redness, pain, gastrointestinal pain, vomiting, diarrhea, dizziness, shortness of breath, muscle weakness, possible seizures or loss of consciousness
Suitable Extinguishing Media: Dry chemical, carbon dioxide, foam, water spray
Unsuitable Extinguishing Media: Do not use water spray if dust can become airborne
Special Fire Hazards: Product will not burn, but exposure to high temperatures may generate hazardous selenium oxides and barium compounds
Protective Equipment: Self-contained breathing apparatus, chemical resistant suit
Personal Precautions: Evacuate area, avoid breathing dust or decomposition products, use ventilation to keep levels low
Firefighting Instructions: Fight fire from upwind, use caution with surrounding chemicals, dike runoff to prevent contamination
Personal Precautions: Wear personal protective equipment to avoid contact with skin and eyes, do not touch or walk through spilled material
Environmental Precautions: Prevent product from entering drains, surface water, or soil, report to authorities if release occurs
Methods for Clean-up: Sweep up without generating dust, place in a properly labeled, closed container for disposal according to local regulations, ventilate area
Decontamination: Wash spill area with water and detergent, collect washings for disposal, avoid release into environment
Safe Handling: Keep containers tightly closed, avoid contact with skin, eyes, and clothing, use only with adequate ventilation, handle under a chemical fume hood, wash hands after handling
Storage Conditions: Store in a cool, dry, well-ventilated place away from incompatible substances such as acids and strong oxidizing agents, keep separated from food and beverages, store in labeled containers
Incompatibilities: Acids and strong oxidants, exposure to moisture may cause formation of toxic gases
Hygiene Practices: No eating, drinking, or smoking in area, remove contaminated clothing and wash before reuse, maintain proper housekeeping
Occupational Exposure Limits: No established OSHA/ACGIH limits for Barium Selenite; advisable to keep exposures as low as possible
Engineering Controls: Use chemical fume hood, local exhaust ventilation, mechanical ventilation
Respiratory Protection: Wear NIOSH-approved respirator if dust or fumes are generated
Skin Protection: Chemical-resistant gloves (nitrile, neoprene, or equivalent), long-sleeved protective clothing
Eye Protection: Safety goggles, face shield in case of risk of splashing
Other Protection: Emergency eyewash station and safety shower, work clothing to prevent skin exposure
Appearance: White to grayish crystalline powder
Odor: Odorless
pH (in water): Not applicable, not soluble
Melting Point/Range: Decomposes at 815°C
Boiling Point: Not applicable
Flash Point: Not applicable
Flammability: Non-flammable
Vapor Pressure: Not relevant
Solubility in Water: Poor, negligible
Density: 4.7 g/cm3
Partition Coefficient (log Kow): Data not available
Auto-Ignition Temperature: Not applicable
Chemical Stability: Stable under recommended storage conditions
Possibility of Hazardous Reactions: Reacts with acids to produce toxic hydrogen selenide (H2Se) gas, reacts with strong oxidizers
Conditions to Avoid: Excess moisture, extreme heat, exposure to acids, generation of dust
Incompatible Materials: Strong acids, strong oxidizing agents
Hazardous Decomposition Products: Barium oxides, selenium oxides, hydrogen selenide gas
Acute Toxicity: Very toxic by ingestion and inhalation, estimated oral LD50 (rat) 6 mg/kg, no data for dermal exposures
Chronic Toxicity: Prolonged exposure can affect central nervous system, liver, kidneys, and may lead to selenosis
Symptoms of Exposure: Nausea, vomiting, abdominal pain, dizziness, muscle pain, loss of appetite, metallic taste, garlic breath odor, possible convulsions and coma
Skin Irritation: May cause irritation
Eye Irritation: May cause serious irritation or burns
Carcinogenicity: Not classified as carcinogenic by IARC, NTP, ACGIH, or OSHA, but selenium compounds should be handled with caution
Mutagenicity: No reliable data available
Reproductive Toxicity: No reliable data available
Additional Data: Risk of toxic effects increases with repeated and prolonged exposure, especially in occupational settings
Aquatic Toxicity: Extremely toxic to aquatic organisms; LC50 (fish, 96 hr): 0.35 mg/L
Persistence and Degradability: Persists in the environment, poorly soluble, risk of bioaccumulation
Bioaccumulative Potential: Potential for accumulation in aquatic organisms, long-term hazard in aquatic environments
Mobility in Soil: Limited by poor solubility, may persist in soil for long periods
Other Adverse Effects: Toxic to wildlife, risk of contamination through improper disposal, runoff or spills
Recommendations: Prevent environmental release, avoid land or water contamination
Product Disposal: Dispose as hazardous chemical waste in accordance with local, regional, and national regulations, incineration at permitted facility or approved chemical landfill
Packaging Disposal: Triple rinse and offer for recycling or disposal as hazardous waste
Precautions: Label all waste containers, never dump into sewers, drains, or surface waters, transfer residues to suitable containers for disposal
RCRA Status: May meet the criteria for hazardous waste under U.S. EPA Resource Conservation and Recovery Act
UN Number: UN1564
Proper Shipping Name: Barium compound, n.o.s. (Barium Selenite)
Transport Hazard Class: 6.1 (Toxic substances)
Packing Group: II
Labels Required: Toxic
Marine Pollutant: Yes, due to acute aquatic toxicity
Special Transport Precautions: Protect containers from damage, keep away from food and animal feed, emergency response guide numbers should be available
U.S. Regulations: Subject to TSCA (Toxic Substances Control Act), SARA 313 (for selenium compounds), CERCLA reportable quantity for selenium compounds
OSHA: Considered hazardous under Hazard Communication Standard
State Regulations: Barium and selenium compounds are regulated (California Proposition 65, state right-to-know laws)
International Regulations: Included in EINECS (European Inventory of Existing Commercial Chemical Substances), hazard information required under REACH Regulation, classified as hazardous under the Global Harmonized System (GHS)
Other Requirements: Use and disposal subject to strict local, state, national and international controls
