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Product Name: Tellurium Tetrachloride
Synonyms: Tellurium(IV) chloride, Tellurium chloride
Chemical Formula: TeCl4
CAS Number: 10026-07-0
Recommended Use: Laboratory reagent, raw material in chemical synthesis, etching agent in microelectronics
Supplier: Qualified chemical manufacturers and trusted laboratory distributors
Emergency Phone: Local emergency services, national poison control
Classification: Corrosive to skin and eyes, toxic if inhaled or ingested
Signal Word: Danger
Pictograms: Skull and crossbones, corrosive symbol
Hazard Statements: Causes severe skin burns and eye damage, may cause respiratory irritation, toxic if swallowed or inhaled, may damage mucous membranes and upper respiratory tract
Routes of Exposure: Inhalation, skin contact, eye contact, ingestion
Symptoms: Burning, coughing, sore throat, eye irritation, abdominal pain, difficulty breathing, delayed lung effects possible
Chemical Name: Tellurium Tetrachloride
Concentration: Pure substance, typically >99% TeCl4
Impurities: Trace amounts of residual hydrochloric acid or related tellurium chlorides
Molecular Weight: 269.4 g/mol
EC Number: 233-059-4
Inhalation: Remove person to fresh air, provide oxygen if breathing is difficult, seek immediate medical attention, watch for delayed lung symptoms
Skin Contact: Take off contaminated clothing, rinse skin under running water for at least 15 minutes, wash with mild soap, get medical help for persistent redness, blistering, or pain
Eye Contact: Irrigate eyes thoroughly with water for at least 15 minutes lifting eyelids to ensure complete removal, do not allow victim to rub or close eyes tightly, see a doctor without delay
Ingestion: Do not induce vomiting, rinse mouth with water only if conscious, never give anything by mouth if unconscious, immediate hospital examination required
Delayed symptoms: May involve pulmonary edema or systemic toxicity hours after exposure
Suitable Extinguishing Media: Dry chemical, carbon dioxide, foam, do not use water on material itself as it reacts violently
Specific Hazards: Emits toxic and corrosive gases like hydrogen chloride, tellurium oxides on contact with moisture or fire
Protective Equipment: Full protective gear, self-contained breathing apparatus
Special Procedures: Approach from upwind, prevent runoff, cool affected containers with water spray from safe distance
Combustion Products: Hazardous chlorine and tellurium gases
Personal Precautions: Evacuate area, ventilate space, prevent contact with skin, eyes, or clothing, wear chemically resistant gloves and splash-proof goggles
Environmental Precautions: Avoid release to drains, surface water, or soil, contain spills to prevent environmental contamination
Cleanup Methods: Absorb with inert material (dry sand, earth, vermiculite), place in sealed chemical waste container, clean spill zone carefully to avoid residue, ventilate until vapors dissipate
Disposal: Treat collected waste as hazardous, send to licensed disposal contractor
Handling: Work in a fume hood, avoid breathing vapors, avoid all contact with skin, eyes, and clothing, practice good hygiene after use, ensure emergency eyewash/shower available on site
Storage Conditions: Store tightly closed in dry, cool, well-ventilated area, keep away from water, moisture, incompatible chemicals (strong bases, reducing agents, alkali metals), seal containers to prevent leaks, protect from physical damage
Special Requirements: Clearly label containers, store away from food and feed
Occupational Exposure Limits: No established OSHA PEL or ACGIH TLV, minimize exposure as substance classified as hazardous
Engineering Controls: Work in ventilated enclosure, using local exhaust or fume hood
Personal Protection: Chemical resistant gloves, full protective clothing (impervious lab coat, apron), splash-resistant goggles, face shield during transfers, properly fitted NIOSH-approved respirator for airborne concentrations above safe limits or if ventilation is inadequate
Hygiene Measures: Wash hands before eating, drinking, or leaving work area, change contaminated clothing immediately, regular medical surveillance for frequent users
Appearance: Colorless or pale-yellow liquid, sometimes fuming, pungent odor
Melting Point: -25°C
Boiling Point: 380°C
Density: 2.93 g/cm3 at 20°C
Solubility: Reacts with water, soluble in organic solvents such as carbon tetrachloride
Vapor Pressure: Significant at room temperature, vapors are dense and corrosive
pH: Forms strongly acidic solution in water due to hydrolysis and release of HCl
Other Properties: Reacts with moisture in air forming corrosive fumes; not flammable but may release toxic decomposition products in fire
Chemical Stability: Stable under dry conditions and at room temperature, rapidly decomposes in contact with water or moist air
Hazardous Reactions: Violent reaction with water, forms hydrochloric acid and tellurium dioxide, reacts with strong reducing agents and alkali metals
Hazardous Decomposition: Hydrogen chloride, chlorine, tellurium oxides
Incompatible Materials: Alkalis, strong bases, organic materials, metals such as sodium and potassium, water, alcohols
Polymerization: Not reported to occur
Acute Toxicity: Highly toxic by inhalation, ingestion, and skin contact; LC50 and LD50 data limited, but exposure to low concentrations reported to cause severe health effects
Effects on Skin: Causes deep burns, blistering, delayed tissue damage
Effects on Eyes: Severe eye burns, possible loss of vision after direct exposure
Chronic Effects: May damage liver and kidneys, tellurium compounds sometimes linked with neurological effects in repeated occupational exposure, garlic odor of breath or sweat indicative of systemic absorption
Carcinogenicity: Not classified as carcinogenic based on available studies
Other Observations: Systemic absorption produces metallic taste, vomiting, drowsiness, possible nerve toxicity with prolonged exposure
Ecotoxicity: Highly toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment due to persistence and bioaccumulation
Persistence and Degradability: Not easily degradable, persistent in soil or water after release
Bioaccumulation Potential: Tellurium may bioaccumulate in aquatic and terrestrial organisms, entering food chains
Mobility: Will not volatilize, reacts quickly with water, contamination risk for soils and water sources
Other Information: Strict controls recommended to avoid accidental releases to environment
Waste Treatment Methods: Collect and contain in sealed, corrosion-proof containers for hazardous waste disposal, avoid neutralization with water due to violent hydrolysis
Disposal of Contaminated Packaging: Rinse containers using safe methods under ventilation, treat as hazardous waste
Disposal Regulations: Follow national, regional, and local rules for disposal, do not discharge to drains or environment, notify authorities of significant spills as required by regulations
Preferred Disposal: Licensed hazardous waste contractor, incineration under controlled conditions
UN Number: UN 3264
Proper Shipping Name: Corrosive liquid, acidic, inorganic, n.o.s. (Tellurium Tetrachloride)
Transport Hazard Class: 8 (Corrosive substances)
Packing Group: II
Label Requirements: Corrosive symbol, toxic hazard symbol
Special Transport Precautions: Secure containers upright and sealed, emergency instructions available during transport, avoid stacking heavy loads, handle only by trained personnel
Regulations: Listed on national and international chemical safety inventories, subject to workplace hazardous chemical regulations in most jurisdictions, transport and storage bound by hazardous material rules
OSHA: Covered under Hazard Communication Standard as a hazardous substance
EPA: Hazardous substance under CERCLA, reportable quantity applies
EU: Classified as hazardous under CLP Regulation (EC) No 1272/2008
REACH Status: Registered or notification required for quantities above threshold limits, safety measures governed by national workplace safety laws
Additional Requirements: Safety training required for all users, exposure monitoring, medical surveillance, extensive documentation and hazard labeling on all containers
