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Product Name: 1,2,3,4-Tetrachloronaphthalene
Synonyms: Tetrachloronaphthalene, TCN, 1,2,3,4-Tetrachloro-2-naphthalene
CAS Number: 7292-82-6
Recommended Use: Used in chemical research, manufacturing organic and synthetic chemicals
Supplier Details: Refer to manufacturer or distributor specific information
Emergency Number: Refer to local poison control or emergency chemical spill hotline
GHS Classification: Acute toxicity (oral), Skin irritation, Eye irritation, Carcinogenic Category 2, Environmental Hazard—Aquatic chronic
Signal Word: Warning
Hazard Statements: Harmful if swallowed; causes skin and eye irritation; may cause cancer by prolonged or repeated exposure; toxic to aquatic life with long lasting effects
Pictograms: Exclamation mark, Health hazard, Dead fish/tree
Precautionary Statements: Wear protective gloves and clothing, avoid breathing dust; wash thoroughly after handling; do not release to environment
Chemical Name: 1,2,3,4-Tetrachloronaphthalene
Synonyms: Tetrachloronaphthalene
Concentration: >95% by weight
Impurities: May contain trace amounts of polychlorinated naphthalenes, naphthalene derivatives
Other Ingredients: Not considered hazardous under GHS for minor components found as trace impurities
Inhalation: Move the person to fresh air, seek medical attention for breathing difficulty or persistent discomfort; monitor for respiratory symptoms
Skin Contact: Remove contaminated clothing, immediately wash skin with soap and water for at least 15 minutes; consult a physician if irritation develops
Eye Contact: Rinse eyes cautiously with water for several minutes, remove contacts if possible, continue rinsing and seek emergency medical help
Ingestion: Do not induce vomiting, rinse mouth with water, seek immediate medical advice, provide symptom management on-site, avoid giving milk or anything by mouth to an unconscious person
Notes for Physician: Treat symptomatically, monitor respiratory and hepatic functions, supportive care may be needed
Suitable Extinguishing Media: Dry chemical powder, carbon dioxide, foam, avoid water jet due to risk of spreading contaminants
Hazardous Combustion Products: Releases hydrogen chloride, carbon monoxide, carbon dioxide, phosgene and other hazardous gases in fire
Firefighting Precautions: Use self-contained breathing apparatus, full protective gear, isolate fire area, fight fire from a safe distance
Special Procedures: Prevent runoff from entering water sources or sewers, decontaminate equipment properly after response
Personal Precautions: Evacuate area, ventilate, avoid dust formation, wear suitable PPE including gloves, goggles, and respiratory protection
Environmental Precautions: Prevent release to soil, water, drains; contain spill with barriers, prevent further leakage
Cleanup Methods: Collect spilled material in inert absorbent (sand, earth), scoop into sealed containers for disposal, clean contaminated surfaces well
Disposal: Handle as hazardous waste, follow local regulations for disposal, consult environmental authority for clean-up approval
Safe Handling: Avoid inhalation, ingestion, and direct contact; use in well-ventilated area; prevent dust accumulation; wash hands after use
Storage: Store in a tightly closed container in a cool, dry, ventilated location away from incompatible substances such as strong oxidizers
Other Precautions: Keep away from sources of ignition, use non-sparking tools, limit access to trained personnel
Occupational Limits: OSHA PEL and ACGIH TLV not established, minimize exposure as much as possible
Engineering Controls: Use chemical fume hood or local exhaust, maintain eyewash stations and emergency showers in work area
Personal Protective Equipment: Chemical-resistant gloves (nitrile, PVC), safety goggles, lab coat or tyvek suit, recommended use of NIOSH-approved respirator for dust or vapors
Hygiene Measures: Remove contaminated clothing immediately, no eating or drinking in work area, wash hands and face before breaks
Appearance: Solid, pale yellow to off-white crystals or powder
Odor: Mild aromatic, similar to polychlorinated chemicals
Melting Point: 190–200 °C
Boiling Point: Decomposes above 350 °C
Solubility: Practically insoluble in water, soluble in organic solvents like ether, benzene
Vapor Pressure: Low
Density: Approximately 1.7 g/cm³
pH (1% solution): Not applicable
Flash Point: >150 °C (closed cup)
Chemical Stability: Stable at ambient temperature and pressure in sealed container
Reactivity: Not highly reactive, may react with strong oxidizers, alkali metals
Decomposition: Releases toxic chlorine compounds, phosgene, and carbon oxides during thermal decomposition or fire
Conditions to Avoid: Heat, open flame, incompatible chemicals
Acute Toxicity: Harmful if swallowed; LD50 values in rats (oral): estimated 2,000–3,000 mg/kg
Skin/Eye Irritation: Causes moderate irritation in animal studies
Chronic Toxicity: Repeated exposure can cause liver and kidney damage, potential carcinogenic effects have been noted in animal tests on similar compounds
Carcinogenic Classification: Not evaluated by IARC, NTP, or OSHA, but chlorinated naphthalenes as a group are suspected to have carcinogenic properties
Other Effects: Possible effects on immune and endocrine systems, sensitization reactions have not been well documented
Aquatic Toxicity: Toxic to aquatic organisms; LC50 (fish) ranges from 0.1 to 10 mg/L, depending on the species
Persistence: This compound is not readily biodegradable and tends to bioaccumulate in aquatic life
Ecotoxicity: Chronic exposure can cause population declines and food chain disruption
Mobility: Low mobility in soil, tends to strongly adsorb to sediments
Waste Disposal: Treat and dispose of waste as hazardous, incinerate at an approved facility; do not discharge to drains, surface water, or soil
Contaminated Packaging: Dispose of in compliance with all regulations, triple rinse and puncture containers before disposal
Transport: If disposal by incineration is not possible, consult licensed hazardous waste contractor
UN Number: Consult updated shipping regulation listings (UN 3077—Environmentally hazardous substance, solid, n.o.s.)
Proper Shipping Name: Environmentally hazardous substance, solid, n.o.s. (contains 1,2,3,4-Tetrachloronaphthalene)
Hazard Class: 9 (Miscellaneous dangerous substances)
Packing Group: III
Marine Pollutant: Yes
Special Precautions: Ensure all transport complies with local, national, and international laws; proper labeling and documentation required; prevent release during transport.
TSCA Status: Listed in the United States Toxic Substances Control Act Inventory
EU Regulations: Restricted; subject to REACH obligations; included in candidate list of substances of very high concern
Labeling Requirements: GHS labels indicating environmental and health hazard, carcinogen precaution
Other Regulations: Subject to reporting requirements by EPA and state authorities; regulatory limits may apply for workplace exposure and environmental release
Workplace Controls: Site-specific occupational health standard may apply based on local regulation.
