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Product Name: Trichlorfon
Synonyms: O,O-Dimethyl-2,2,2-trichloro-1-hydroxyethylphosphonate; Dipterex; Chlorophos
CAS Number: 52-68-6
Manufacturer: Commonly produced by agrochemical companies worldwide
Recommended Use: Insecticide for agricultural, horticultural, and veterinary applications
Emergency Contact Number: Provided by local supplier or manufacturer
Address: Found on product label or safety documentation
Restrictions: Not for household use, avoid food and feed contamination
Classification: Toxic if inhaled, swallowed, or in contact with skin; hazardous to aquatic life; classified as an organophosphate
Label Elements: Skull and crossbones for acute toxicity; exclamation mark for irritation; dead fish & tree for environmental hazard
Signal Word: Danger
Hazard Statements: May impair cholinesterase activity, cause nausea, dizziness, or muscle weakness; dangerous for aquatic systems
Precautionary Statements: Avoid breathing dust or spray; prevent release to the environment; wear gloves, mask, and protective clothing
Chemical Name: Trichlorfon
Concentration: Typically 95–98% in technical grade; lower concentrations in formulated products
Other Ingredients: Surfactants, emulsifiers, dust carriers (vary by product)
Impurities: Trace organic phosphorus compounds; consult technical bulletin from supplier for details
Formulation Types: Wettable powder, granules, liquid concentrate
Inhalation: Remove to fresh air, keep airway clear, seek medical attention quickly
Ingestion: Do not induce vomiting, wash mouth with water, get emergency care immediately
Skin Contact: Take off contaminated clothing, rinse skin with soap and water, consult a doctor
Eye Contact: Rinse continuously with water for at least 15 minutes, seek specialist evaluation
Important Symptoms: Nausea, headache, sweating, pinpoint pupils, muscle tremors, breathing difficulty
Note for Doctors: Treat with atropine or pralidoxime as antidotes for organophosphate poisoning; observe for recurrent symptoms
Suitable Extinguishing Media: Dry powder, foam, carbon dioxide, water spray
Unsuitable Media: Full water jet may cause contamination spread
Hazardous Combustion Products: Hydrogen chloride, phosphorus oxides, carbon monoxide, methyl chloride
Protective Equipment: Complete protective gear for firefighters; self-contained breathing apparatus
Special Hazards: Can evolve toxic gases on burning; runoff from fire control may contaminate water sources
Personal Precautions: Wear chemical-resistant clothing, gloves, and splash goggles; remove people from area
Environmental Precautions: Prevent entry into waterways, drains, or soil; alert local authorities if contamination risk exists
Methods for Clean-Up: Cover with absorbent material like sand, collect into labeled waste containers, wash spill area with detergent solution
Decontamination: Use dilute sodium hydroxide or bleach solutions to break down residues, dispose of water per regulations
Safety Note: Avoid producing dust or aerosol during clean-up, ventilate affected space well
Handling: Use in well-ventilated space, avoid direct contact with substance; do not eat, drink, or smoke during handling
Storage: Keep containers tightly sealed and upright in cool, dry, well-ventilated building
Segregation: Store away from food, feed, animal bedding, strong alkalis, oxidizers
Specific Conditions: Keep out of reach of children and unauthorized persons, post hazard signage
Packaging: Use original containers with secure closures; inspect regularly for leaks or corrosion
Occupational Exposure Limits: No set OSHA PEL; ACGIH TLV for organophosphates applies; consult local regulations for guidance
Engineering Controls: Local exhaust ventilation or fume hood recommended for bulk handling or mixing
Personal Protective Equipment (PPE): Chemical-resistant gloves, splash-proof goggles, full coveralls, rubber boots, NIOSH-approved respirator if aerosol or dust risk is present
Hygiene Measures: Wash hands and face thoroughly before breaks and after work; shower if significant exposure is suspected
Environmental Controls: Use containment pads, prevent contamination of soil or water, monitor work environment for residues
Appearance: White to off-white crystalline powder or colorless granules, depending on grade
Odor: Slightly pungent; sometimes described as faintly chemical
Melting Point: About 83°C–85°C
Solubility: 12 g/100 mL in water at room temperature; soluble in alcohols and common organic solvents
Vapor Pressure: Very low at room temperature; does not volatilize easily
Boiling Point: Decomposes before boiling
Density: Approximately 1.6 g/cm³
pH: Around 5–6 in aqueous solution
Other Properties: Degradable under basic or acidic conditions; hydrolyzes more rapidly in high pH water
Chemical Stability: Stable under recommended storage conditions; decomposes under strong acid, base, or high heat
Reactivity: Reacts with strong oxidizing or alkaline materials; hydrolysis reduces activity and forms breakdown products
Hazardous Reactions: Can produce toxic gases if heated strongly or burned
Conditions to Avoid: High temperature, direct sunlight, high humidity
Incompatible Materials: Alkalis, oxidizers, strong acids, reactive metals
Decomposition Products: Chloride fumes, dichlorvos (a more toxic organophosphate), phosphorus oxides
Acute Toxicity: Highly toxic by ingestion, inhalation, skin absorption (LD50 oral rat: 600 mg/kg; dermal: 630 mg/kg)
Chronic Effects: Prolonged exposure may lead to persistent nervous symptoms, cholinesterase inhibition
Routes of Exposure: Skin, eyes, respiratory tract, digestive tract
Symptoms: Nausea, sweating, blurred vision, respiratory distress, convulsions, unconsciousness at high doses
Carcinogenicity: Not classified as carcinogenic to humans by IARC or EPA
Other Health Effects: Potential for developmental toxicity, reproductive toxicity reported in some studies; not known to be mutagenic at typical occupational exposure levels
Aquatic Toxicity: Extremely toxic to fish and aquatic invertebrates (LC50 values for bluegill sunfish as low as 0.86 mg/L)
Persistence and Degradability: Breaks down in soil and water within days to weeks; half-life in surface water less than 10 days under normal conditions
Bioaccumulation: Does not build up in animal tissues due to rapid degradation and excretion
Soil Mobility: Moderately mobile, can leach into groundwater in sandy soils
Adverse Effects: Can disrupt aquatic ecosystems if released; sublethal exposure impacts reproduction and feeding in fish species
Product Disposal: Destroy unused product and wash solutions by incineration at a licensed facility
Contaminated Packaging: Triple rinse containers, puncture and dispose at an approved collection site
Precautions: Do not reuse containers; avoid creation of dust during disposal; follow local hazardous waste regulations
Sewage Disposal: Never pour into drains, surface water or soil; inform local waste authority if spill cannot be contained
Disposal of Large Quantities: Controlled landfill or chemical destruction following environmental authority guidance
UN Number: 2588
UN Proper Shipping Name: Pesticide, solid, toxic, n.o.s. (contains Trichlorfon)
Transport Hazard Class: 6.1 (Toxic substances)
Packing Group: III (moderate hazard)
Labeling: Skull and crossbones, “Toxic” marking; environmental hazard symbol
Special Precautions: Keep separate from food and feed during transport; provide documentation to carriers; emergency procedures for leaks or fires
Transport in Bulk: Comply with international MARPOL and IBC code
Global Registration: Approved and restricted by authorities depending on the region; banned or strictly controlled in parts of Europe, registered and regulated in many Asia-Pacific and Latin American countries
Major References: US EPA, EU Regulation 1107/2009, International Chemical Safety Cards (ICSC), local pesticide regulations
Reporting Obligations: Required reporting of environmental release; subject to workplace exposure standards; record-keeping for agricultural use
Worker Protection Standards: Restricted entry intervals after application; PPE required as per local rules
Community Right-to-Know: Listed as a hazardous substance in national inventories; label must include risk statements and first aid guidance
