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Chemical Name: 2,4,6-Trichlorophenol
Common Synonyms: TCP, phenol, trichloro-
Appearance: White to light tan crystals with a strong, sharp odor
Uses: Mainly used as a pesticide, wood preservative, fungicide, and in synthesis of dyes and resins
CAS Number: 88-06-2
Molecular Formula: C6H3Cl3O
Health Hazards: Poisonous if swallowed, inhaled, or absorbed through skin; known to irritate eyes, skin, and respiratory tract; long-term exposure links to liver and kidney damage; possible carcinogen
Acute Symptoms: Burning in throat or chest, headaches, dizziness, sweating, muscle weakness, possible convulsions
Environmental Hazards: Toxic to fish and aquatic life, accumulates in soil and water; known for persistence due to slow degradation
Main Component: 2,4,6-Trichlorophenol nearly pure, though sometimes blended with trace impurities depending on manufacturing route
Impurities: May include other chlorinated phenols, dioxins, or related compounds, which pose an added toxicological concern
Inhalation: Move person to fresh air, keep airway open, monitor breathing; seek immediate medical attention if symptoms persist
Skin Contact: Remove contaminated clothing, wash skin thoroughly with soap and water; speed matters as absorption is rapid
Eye Contact: Flush eyes with clean water for at least 15 minutes, lifting eyelids occasionally
Ingestion: Rinse mouth with water, never give anything by mouth to an unconscious person; get medical help right away
Suitable Extinguishing Media: Use dry chemical, foam, or CO2; water spray for larger fires
Specific Hazards from Fire: Produces toxic fumes, notably phosgene, hydrochloric acid, and dioxins when burnt
Protective Equipment: Firefighters require self-contained breathing apparatus and complete protective gear
Personal Precautions: Limit exposure—wear gloves, goggles, and respiratory protection
Environmental Precautions: Prevent material from entering sewers, waterways, or soil
Cleanup Methods: Spill zones need to be ventilated, dry containment materials work best; collect residue in sealed containers for proper disposal
Handling: Transfer only with proper ventilation, avoid inhaling dust or fumes; direct contact with skin or clothing should be minimized
Storage: Secure tightly in chemically compatible containers, store away from acids, strong oxidizers, and open flames; keep in cool, dry, well-ventilated spaces with clear hazard labels
Exposure Limits: OSHA and ACGIH recommend a ceiling of 0.5 mg/m3
Ventilation: Local exhaust recommended at places where dust or aerosols may form; closed systems preferred in larger operations
Personal Protection: Impervious gloves, safety glasses or chemical splash goggles, long sleeves, and respirators when engineering controls fall short
Hygiene Measures: Remove contaminated clothing and wash exposed skin before breaks or after work; eating and drinking should be away from handling sites
Physical State: Solid crystals or crystalline powder
Odor Threshold: Strong, medicinal to phenolic smell often detectable at low concentrations
Melting Point: About 69°C (156°F)
Boiling Point: About 246°C (475°F)
Solubility: Limited in water, more soluble in organic solvents like ethanol and ether
Vapor Pressure: Low at room temperature
Density: 1.65 g/cm3
Chemical Stability: Holds up in standard storage and handling, but decomposes with strong heat or in the presence of light
Reactive Materials: Avoid mixing with acids, strong oxidizers, or bases as violent reactions can occur
Hazardous Decomposition: Burns to form toxic gases including hydrochloric acid, phosgene, and potentially carcinogenic compounds under incomplete combustion
Acute Toxicity: Even brief contact can cause poisoning; absorbed through skin, lungs, or mouth
Chronic Effects: Prolonged or repeated exposure damages liver and kidneys, suppresses central nervous system, and may contribute to immune or reproductive harm
Carcinogenicity: Studies suggest possible links to certain cancers, prompting restrictions and calls for strict exposure limits
Aquatic Toxicity: Proven risk to fish and amphibians at low concentrations; toxic breakdown products may persist or biomagnify
Soil Impact: Degrades slowly, binds tightly to soil particles, contaminates ground and surface water if mismanaged
Bioaccumulation: Lingers in food chains, making responsible disposal and leak prevention especially crucial
Waste Treatment: Incineration in properly permitted, high-temperature facilities reduces risk; landfill disposal only after expert assessment
Precautions: Classified as hazardous waste; needs separation from general trash and handling by trained professionals using sealed, labeled containers
Shipping Regulations: Designated as a hazardous material; shipping containers must follow UN guidelines for toxic solids
Packing Methods: Rigid, sealed packaging required to avoid spills or leaks; clear hazard warnings on all containers
International Rules: Listed under key conventions as a probable environmental toxin
National Restrictions: Many countries place limitations on sale, use, and discharge of 2,4,6-Trichlorophenol, citing public health and environmental risks
Workplace Controls: Employers are required to train workers, monitor air levels, and provide protective measures in line with safety regulations
