Product Name: Hexachlorobutadiene
Chemical Formula: C4Cl6
CAS Number: 87-68-3
Synonyms: Perchlorobutadiene, HCBD
Recommended Uses: Industrial solvent, chemical intermediate, test fluid for heat transfer equipment, component in pesticide formulations
Supplier Details: Company name, address, emergency contact number available on request via distributor
Emergency Telephone: Chemtrec or equivalent international service, local poison control
Hazard Classification: Acute Toxicity (Oral, Inhalation, Dermal) Category 3; Carcinogenicity Category 2; Specific Target Organ Toxicity (Repeated Exposure) Category 2; Hazardous to aquatic environment, chronic Category 1
Signal Word: Danger
GHS Pictograms: Skull and crossbones, health hazard, environment
Hazard Statements: Toxic if inhaled, swallowed, or through skin; suspected of causing cancer; may cause damage to liver, kidneys, and nervous system through prolonged or repeated exposure; very toxic to aquatic life with long lasting effects
Precautionary Statements: Avoid all contact; wear impervious gloves and eye protection; do not breathe vapors or mist; use only outdoors or in well-ventilated area; keep away from drains, surface and ground water; seek medical advice in case of accident or discomfort
Chemical Name: Hexachlorobutadiene
Concentration: ≥ 98% by weight
Impurities: Trace levels of tetrachlorobutadiene, pentachlorobutadiene, hexachloro-1,3-butadiene isomers
Other Additives: Non-applicable for pure product
Inhalation: Remove to fresh air immediately; keep victim at rest in position comfortable for breathing; administer oxygen if breathing is difficult; consult a physician as soon as possible
Skin Contact: Remove contaminated clothing and shoes; flush affected area with running water for at least 15 minutes; wash thoroughly with soap; obtain medical attention
Eye Contact: Rinse immediately with flowing water for at least 15 minutes, keeping eyelids wide open; remove contact lenses if present; seek prompt medical care
Ingestion: Rinse mouth; do not induce vomiting unless directed by medical personnel; drink water if conscious; get immediate medical help
Most Important Symptoms: Drowsiness, headache, nausea, dizziness, respiratory distress, potential organ effects (liver, kidney)
Notes for Physicians: No specific antidote known; provide supportive treatment and monitor delayed effects on hepatic and renal systems
Suitable Extinguishing Media: Carbon dioxide, dry chemical powder, foam
Unsuitable Media: Avoid water jets on burning material, as runoff can spread contamination
Hazards from Combustion: Releases toxic phosgene, HCl, and carbon oxides during burning
Special PPE: Positive pressure self-contained breathing apparatus (SCBA), chemical protective clothing
Firefighting Instructions: Approach from upwind; isolate area and evacuate non-essential personnel; use water spray to cool containers but avoid runoff; prevent spillage from entering sewers or water courses
Personal Precautions: Evacuate area; ensure responders wear appropriate PPE; avoid vapors
Environmental Precautions: Prevent entry to soil, surface water, or drains; notify local authorities if contamination occurs
Spill Containment: Contain spill with earth, sand, or inert absorbent materials; ventilate area
Clean-up Methods: Collect absorbed material in sealable containers for proper disposal; wash area with plenty of water; remove contaminated clothing and wash before reuse
Precautions for Safe Handling: Use only with proper ventilation or exhaust systems; avoid all direct contact; keep away from food and drinks; prohibit smoking or open flames
Conditions for Safe Storage: Store in tightly closed containers under cool, dry, well-ventilated conditions; keep away from sources of ignition or incompatible substances (strong oxidizers, metals); ensure secondary containment to prevent leaks
Incompatibilities: Alkali metals, aluminum, magnesium, strong bases
Occupational Exposure Limits: OSHA PEL: 0.02 ppm (skin); ACGIH TLV: 0.02 ppm (skin)
Engineering Controls: Mechanical exhaust ventilation; closed systems; local capture at emission points
Respiratory Protection: Full face respirator with organic vapor cartridges; SCBA for emergencies
Skin Protection: Gloves made of Viton, butyl rubber, or 4H; chemical-resistant full-body suit
Eye / Face Protection: Tight-fitting chemical safety goggles and face shield
Hygiene Measures: Wash hands before meals and after handling; remove contaminated clothing and bathe after work shift; do not eat, drink, or smoke during operations
Environmental Controls: Use spillproof containers and enclosed transfer; monitor workplace air regularly for exposures; avoid emission to atmosphere
Physical State: Clear, colorless, oily liquid
Odor: Distinct, sweetish, chloroform-like
Odor Threshold: Not defined, strong at low concentrations
Melting Point: -19°C
Boiling Point: 215°C
Flash Point: 110°C (closed cup)
Evaporation Rate: Slow, higher than water
Flammability: Not easily ignited, but combustible
Vapor Pressure: 0.21 mmHg (20°C)
Vapor Density: 8.5 (air = 1)
Density: 1.68 g/cm³ (20°C)
Solubility: Virtually insoluble in water; miscible with chlorinated solvents
pH: Not applicable
Partition Coefficient (n-octanol/water): log Kow ~5.1
Autoignition Temperature: 585°C
Decomposition Temperature: Above 215°C releases toxic gases
Viscosity: 1.98 mPa•s at 25°C
Chemical Stability: Stable under recommended storage conditions; degrades slowly with light and heat exposure
Possibility of Hazardous Reactions: Will not polymerize spontaneously; reacts with alkali metals and aluminum, evolving heat and flammable gases
Conditions to Avoid: Light, high temperatures, incompatible materials, sources of ignition
Incompatible Materials: Very reactive with strong bases, metals like sodium and aluminum
Hazardous Decomposition Products: Hydrogen chloride, phosgene, polychlorinated compounds on burning or decomposition
Acute Toxicity: LD50 oral (rat): ~80 mg/kg; LC50 inhalation (rat, 4h): ~0.5 mg/L
Routes of Exposure: Absorption through skin, inhalation, ingestion
Symptoms: Coughing, drowsiness, headache, nausea, renal and hepatic distress, central nervous system depression
Chronic Effects: Damages kidneys and liver with repeated exposures; possible carcinogen as per IARC 2B rating
Mutagenicity: Laboratory studies show clastogenic effects in animals
Reproductive Effects: Some evidence for adverse effects in animal studies; insufficient human data
Sensitization: Not a recognized sensitizer
Ecotoxicity: Very toxic to aquatic life; LC50 (fish, 96h): 0.032 mg/L
Persistence and Degradability: Highly persistent; low biodegradability; persists in soil and sediment for years
Bioaccumulation Potential: High log Kow; risk of bioaccumulation in aquatic organisms
Mobility in Soil: Moderately mobile; binds strongly to soils with high organic matter
Other Adverse Effects: May undergo long-range transport in air, potential for global distribution (POPs characteristics)
Waste Treatment Methods: Incineration in hazardous waste facility with chlorine scrubbers; avoid landfill disposal
Contaminated Packaging: Dispose as hazardous chemical waste; do not reuse containers unless thoroughly cleaned and tested
Environmental Caution: Do not allow material, contaminated absorbents, or rinsate to reach surface waters, drains, or natural soils
UN Number: 2279
Proper Shipping Name: Hexachlorobutadiene
Hazard Class: 6.1 (Toxic substances)
Packing Group: II
Labels: Toxic, Marine Pollutant
Marine Pollutant: Yes (high hazard for aquatic environment)
Transport Documents: Comply with DOT, IMDG, IATA transport regulations
Special Precautions: Ensure containers are upright, secure, undamaged; emergency response guide included with shipment
OSHA: Listed as hazardous substance; occupational exposure limit enforced
TSCA: Listed on US Toxic Substances Control Act inventory
EPCRA: CERCLA reportable quantity: 10 pounds
SARA Title III: Subject to emergency planning and community right-to-know reporting (Section 313)
RCRA: Classified as hazardous waste with number U225
EU REACH: Substance of very high concern (SVHC); restrictions on production and use
Other Regulations: Listed in Canada DSL/NDSL, EINECS, Japan ENCS, China IECSC
Safety Assessment: Recommended periodic workplace air and health monitoring; primary responsibility lies with employer for worker safety training and engineering controls
