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Product Name: Pentachlorobenzene
Synonyms: PCBz, 1,2,3,4,5-Pentachlorobenzene
Chemical Formula: C6Cl5H
Recommended Use: Intermediate in chemical synthesis, flame retardants, dielectric fluids
CAS Number: 608-93-5
Supplier: Information provided on the container label
Emergency Contact: Refer to regional poison control center or supplier emergency number
GHS Classification: Acute Toxicity (Oral, Dermal, Inhalation); Carcinogenicity; Aquatic Chronic Hazards
Signal Word: Danger
Hazard Statements: Toxic if swallowed, in contact with skin, or if inhaled; Suspected of causing cancer; May cause damage to organs through prolonged or repeated exposure; Harmful to aquatic life with long-lasting effects
Pictograms: Skull and Crossbones, Health Hazard, Environment
Precautionary Statements: Avoid all unnecessary exposure; Do not breathe dust, vapors, or spray; Use personal protective equipment as required
Chemical Name: Pentachlorobenzene
Concentration: Greater than 98%
Impurities: <2% unspecified chlorinated benzenes or related compounds
Molecular Weight: 250.33 g/mol
EC Number: 210-172-5
General Advice: Seek medical attention if exposed, regardless of apparent symptoms
Eye Contact: Rinse cautiously with water for several minutes; Do not rub eyes; Remove contact lenses if present and easy to do; Continue rinsing and obtain medical help
Skin Contact: Wash with plenty of soap and water for at least 15 minutes; Remove contaminated clothing and wash before reuse; Seek medical advice
Inhalation: Move exposed person to fresh air; Keep at rest and warm; Provide oxygen if breathing becomes difficult; Call a physician
Ingestion: Rinse mouth thoroughly with water; Never give anything by mouth to an unconscious person; Do not induce vomiting; Get immediate medical attention
Suitable Extinguishing Media: Dry chemical, carbon dioxide, water fog, or foam; Use large quantities of water spray if available
Unsuitable Media: Direct water jet may spread fire
Specific Hazards: Emits toxic fumes of hydrogen chloride and phosgene on combustion; Decomposes to release chlorine gas
Protective Equipment for Firefighters: Self-contained breathing apparatus and fully protective gear
Special Precautions: Move containers from the fire area if possible; Avoid inhaling combustion products; Keep run-off water out of sewers and water sources
Personal Precautions: Evacuate unnecessary personnel; Wear suitable protective clothing and respiratory protection
Environmental Precautions: Prevent entry into water bodies, soil, or drains
Spill Cleanup Methods: Absorb with inert material such as sand or vermiculite; Collect into labeled chemical waste containers for proper disposal; Ventilate area and wash spill site after material pickup
Decontamination: Wash contaminated area thoroughly with soap and water; Use appropriate absorbents for neutralization
Safe Handling: Work in well-ventilated area; Minimize dust formation; Avoid contact with skin and eyes; Do not eat, drink, or smoke near product
Storage Conditions: Keep container tightly closed in a cool, dry, well-ventilated place; Protect from moisture and direct sunlight; Store away from incompatible materials such as strong oxidizers and bases
Incompatible Materials: Strong oxidizing agents, alkali metals, bases
Transfer Precautions: Use dedicated and clearly labeled equipment; Avoid contamination and cross-contact
Occupational Exposure Limits: No specific exposure limit set for pentachlorobenzene, follow local regulations
Engineering Controls: Use enclosures, local exhaust, or other engineering controls to keep airborne levels below recommended exposure limits
Personal Protective Equipment: Chemical-resistant gloves, safety goggles, long-sleeved protective clothing
Respiratory Protection: Use NIOSH-approved respirator for organic vapor/mist if exposure risk exists
Hygiene Measures: Wash hands, face, and exposed skin thoroughly after handling; Avoid direct contact
Appearance: White to off-white crystalline powder
Odor: Mild aromatic odor
Melting Point: 85 - 88°C
Boiling Point: 277°C
Density: 1.8 g/cm³ at 20°C
Solubility: Insoluble in water; soluble in ethers, benzene, and alcohol
Vapor Pressure: 0.009 mmHg at 25°C
Partition Coefficient (log Kow): 5.18
Flash Point: 138°C (Closed cup)
Chemical Stability: Stable under recommended storage conditions
Conditions to Avoid: Heat, flames, direct sunlight, high humidity
Materials to Avoid: Powerful oxidizing agents, strong alkalis, strong acids
Hazardous Decomposition Products: Hydrogen chloride, phosgene, dioxins, and chlorinated phenols
Polymerization: No hazardous polymerization reported under normal conditions
Acute Toxicity: LD50 Oral (rats) 750 mg/kg; LD50 Dermal (rabbits) 1400 mg/kg
Inhalation Toxicity: Data not extensively available; may cause respiratory irritation, coughing, labored breathing
Skin/Eye Irritation: May irritate skin and eyes upon contact
Chronic Effects: Prolonged exposure may damage liver, kidneys, nervous system; possible human carcinogen (IARC Group 2B)
Mutagenicity: Some studies show mutagenic potential in vitro
Reproductive Toxicity: Not enough data to determine effects
Ecotoxicity: Highly toxic to aquatic life, including fish and invertebrates
Persistence: Remains in soil and sediment environments for long periods; does not easily biodegrade
Bioaccumulation: Log Kow value suggests potential for bioaccumulation in wildlife
Mobility: Low mobility in soil, binds tightly to sediments
Degradation: Degrades slowly through photolysis and microbial activity
Waste Disposal Method: Treat as hazardous chemical waste; dispose through licensed chemical waste contractor
Contaminated Packaging: Triple rinse containers, puncture and manage as hazardous waste
Disposal Precautions: Do not discharge to drains, water courses, or on the ground; comply with federal, state, and local regulations
Recommended Treatment: High-temperature incineration in facilities equipped to handle organochlorines
UN Number: 3077
UN Proper Shipping Name: Environmentally hazardous substance, solid, n.o.s. (Pentachlorobenzene)
Transport Hazard Class: 9 (Miscellaneous dangerous substances and articles)
Packing Group: III
Environmental Hazards: Classified as a marine pollutant
Special Transport Precautions: Ensure containers are clearly labeled, intact, and protected from damage during transportation
International Regulations: Listed in Annex A, B, and C of the Stockholm Convention as a persistent organic pollutant; subject to export/import regulations
U.S. Regulations: Listed on TSCA Inventory; subject to CERCLA and SARA 313 reporting
EU Regulations: Covered by REACH; hazardous substance under CLP Regulation
Labeling Requirements: Hazard pictograms as per GHS; include warning statements per national regulations
Other Regulatory Information: May have restrictions or bans in several countries due to toxicity and environmental persistence
