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Name: 3,4-Dichloroaniline
Chemical formula: C6H5Cl2N
Alternative Names: 3,4-Dichlorobenzenamine, 1-Amino-3,4-dichlorobenzene
CAS Number: 95-76-1
Odor: Faint aromatic or amine-like
Appearance: Off-white to beige crystalline solid
Hazard Classification: Acute toxicity (oral, dermal, inhalation), skin irritation, serious eye irritation
Risk Phrases: Harmful if swallowed or in contact with skin, causes skin and eye irritation, suspected of causing cancer
GHS Label: Skull and crossbones, exclamation mark
Main Symptoms: Headache, nausea, drowsiness, skin redness, eye tearing
Environmental Effects: Toxic to aquatic organisms, potential for bioaccumulation
Chemical: 3,4-Dichloroaniline
Purity: Typically exceeds 97% in industrial settings
Impurities: May contain trace-level chlorinated anilines or chlorobenzenes
Inhalation: Move to fresh air, seek medical attention if symptoms persist
Ingestion: Rinse mouth with water, don't induce vomiting, call for medical help
Skin Contact: Remove contaminated clothing, rinse skin thoroughly with soap and water for several minutes
Eye Contact: Rinse cautiously with water for at least 15 minutes; lift eyelids occasionally and head straight to a doctor
Delayed Effects: Watch for delayed symptoms, including vertigo or unusual tiredness
Suitable Extinguishing Media: Dry chemical, carbon dioxide, foam, don’t use straight water streams
Hazardous Combustion Products: Hydrogen chloride, nitrogen oxides, phosgene may form
Protective Equipment: Use self-contained breathing apparatus and full protective gear
Special Hazards: Dust can form explosive mixtures with air in some conditions, residues from fire may require hazardous waste disposal
Personal Precautions: Wear gloves, eye protection, chemical-resistant clothing, NIOSH-approved respirator for dust
Spill Control: Avoid causing airborne dust, contain spill, scoop solid with non-sparking tools
Cleanup: Collect waste in secure containers, ventilate area,
Environmental Precautions: Stop spill from reaching drains and open water; alert environmental response teams if contamination occurs
Safe Handling Practices: Use in well-ventilated areas, avoid breathing dust or vapor, keep away from heat sources or open flames
Storage Guidelines: Store away from food and incompatible chemicals, keep in tightly closed containers
Conditions to Avoid: Heat, sparks, direct sunlight, moisture
Incompatible Materials: Strong acids, oxidizers, and bases
Engineering Controls: Work with local exhaust or general ventilation, process enclosures offer added security
Personal Protective Equipment: Chemical splash goggles, gloves, long sleeves, and aprons made from resistant material
Respiratory Protection: Use respirator with appropriate filter cartridge when dust or fumes become a concern
Exposure Limits: No established OSHA PEL or ACGIH TLV, but prudent limits fall below 1 mg/m³ for workplace air
Form: Crystalline powder or solid
Color: Off-white to pale tan
Melting Point: Around 66°C
Boiling Point: About 273°C
Vapor Pressure: Low at room temperature
Solubility: Poorly soluble in water, soluble in many organic solvents
Odor Threshold: Not well reported
Other: High stability under normal conditions but sensitive to intense heat or acids
Stability: Chemically stable at room temperature and pressure
Hazardous Reactions: Reacts with oxidizers, acids, can decompose at high temperatures
Decomposition Products: Toxic gases likely to form from fires or improper storage
Polymerization: Polymerization doesn’t happen under normal conditions
Routes of Exposure: Skin contact, inhalation, ingestion, eye contact
Acute Effects: Ward off headaches, nausea, mucous membrane irritation
Skin Absorption: Harmful through broken or intact skin
Chronic Effects: Possible liver and kidney damage, reported methemoglobinemia, suspected carcinogen from some studies
LD50: Oral rat: reports range 400-500 mg/kg
Carcinogenicity: Not listed by IARC or NTP, but classified as “suspected” based on similar chemicals
Other Effects: Can trigger allergic skin reactions with repeated exposure
Aquatic Toxicity: Marked toxicity reported in fish and invertebrates
Persistence: Resists biodegrading, may build up over time in sediment
Bioaccumulation: Potential for accumulation in waterlife tissues
Other Hazards: Risk of spreading through soil and groundwater, long-term ecological harm possible after spills
Waste Treatment: Must be treated as hazardous waste, send only to licensed disposal facilities
Container Disposal: Triple rinse, puncture, and send to hazardous waste handlers
Incineration: High-temperature facilities with scrubbers recommended
Regulatory Requirements: Comply with local laws for hazardous substances
UN Number: UN 2811 (for toxic solids, organic, n.o.s.)
Shipping Name: Toxic solid, organic, n.o.s. (contains 3,4-Dichloroaniline)
Hazard Class: 6.1 toxic substances
Packing Group: III
Transport Precautions: Avoid breakage, label clearly for hazards, keep away from foodstuffs
International Status: Included in inventories like TSCA, reaches classification as hazardous under OSHA
SARA Title III: Not specifically listed but may fall under broader reporting rules
EPA Listings: Classified under hazardous waste and hazardous substance regulations
Worker Safety: OSHA’s Hazard Communication Standard covers it
Labeling Requirements: Proper hazard, warning, and precaution statements must appear on all packaging
