Product Name: Divinylbenzene
Chemical Formula: C10H10
Synonyms: 1,2-Divinylbenzene, m-Divinylbenzene, DVB
CAS Number: 1321-74-0 (mixture), 108-57-6 (meta), 105-80-2 (ortho), 123-82-1 (para)
Recommended Use: Cross-linking agent for polymers, resins manufacturing, ion exchange resins
Manufacturer: Vendor or manufacturer details printed on packaging or shipping paperwork
Emergency Contact: Emergency response telephone provided with product shipment
Relevant Identified Uses: Laboratory chemical, industrial chemical
Hazard Classification: Flammable liquid (Category 2); Acute toxicity (oral, Category 4); Skin irritation (Category 2); Eye irritation (Category 2A); Carcinogenicity (Category 2)
Hazard Symbols: Flame, exclamation mark, health hazard
Signal Word: Danger
Hazard Statements: Highly flammable liquid and vapor; Harmful if swallowed; Causes skin and eye irritation; Suspected of causing cancer; May cause respiratory irritation
Precautionary Statements: Keep away from heat, sparks, open flames; Wear protective gloves, eye protection; Avoid breathing vapor or mist; Wash skin thoroughly after handling; Obtain special instructions before use; If exposed or concerned: seek medical advice
Most Important Hazards: Fire and explosion risk, health effects from inhalation, ingestion, skin contact
Chemical Name: Divinylbenzene
Concentration: Typically 55-65% meta isomer, remainder is ortho and para isomers and ethylvinylbenzene
Impurities: Ethylvinylbenzene, traces of unreacted styrene, t-butylcatechol (as stabilizer)
CAS Numbers: 1321-74-0 (DVB mixture), 25340-17-4 (ethylvinylbenzene)
Molecular Weight: 130.19 g/mol
Inhalation: Move to fresh air, monitor for signs of respiratory distress, seek medical attention if symptoms (headache, dizziness, coughing) persist
Skin Contact: Immediately remove contaminated clothing, rinse skin with plenty of water for at least 15 minutes, wash with soap, consult a doctor if irritation or redness persists
Eye Contact: Rinse cautiously with water for several minutes, remove contact lenses if present and easy to do, continue rinsing, seek medical advice if eye discomfort persists
Ingestion: Do not induce vomiting, rinse mouth thoroughly, never give anything by mouth to an unconscious person, get immediate medical help
Most Important Symptoms: Throat and lung irritation, skin redness, burning eyes, allergic response in sensitized individuals
Advice to Physicians: Treat symptomatically, monitor for delayed onset of pulmonary edema or allergic reaction
Suitable Extinguishing Media: Alcohol-resistant foam, dry chemical, carbon dioxide, water spray (not a solid stream, which may spread fire)
Unsuitable Media: Do not use a direct water jet, as it may spread fire
Specific Hazards: Product can form explosive air-vapor mixtures, containers may explode under fire conditions, vapors heavier than air
Hazardous Combustion Products: Toxic gases such as carbon monoxide, carbon dioxide, soot, irritating smoke
Special Protective Equipment For Firefighters: Self-contained breathing apparatus (SCBA), full protective clothing
Firefighting Instructions: Cool containers with water spray, keep upwind, evacuate personnel from area
Personal Precautions: Evacuate area, remove all ignition sources, use personal protective equipment including gloves, goggles, respirator
Environmental Precautions: Prevent entry into drains, waterways, soil
Containment Methods: Dike and absorb spill with inert material such as sand or activated carbon, collect for disposal in tightly closed containers
Cleanup Procedures: Use non-sparking tools, ventilate area, clean remaining material with appropriate detergent and water
Notification Procedures: Inform authorities if major spill threatens public health or the environment
Handling: Use only in well-ventilated areas, ground and bond containers during transfer, avoid sources of ignition, avoid contact with eyes, skin, and clothing, do not breathe vapors
Storage: Keep containers tightly closed in a cool, dry, well-ventilated location away from heat, direct sunlight, oxidizers, acids, and bases
Incompatible Materials: Strong oxidizing agents, acids, alkalis
Technical Measures: Use approved explosion-proof electrical, ventilating, and lighting equipment
Storage Stability: Product stabilizer keeps polymerization in check; avoid excess heat to prevent hazardous buildup of pressure
Occupational Exposure Limits: No established OSHA PEL or ACGIH TLV for divinylbenzene; treat similarly to styrene: ACGIH TLV = 20 ppm (TWA) for styrene
Engineering Controls: Use explosion-proof local exhaust ventilation, vapor detection systems in confined areas
Personal Protection—Eyes: Safety glasses with side shields or chemical splash goggles
Personal Protection—Skin: Chemical-resistant gloves (nitrile or PVC), long-sleeved clothing, lab coat or apron
Personal Protection—Respiratory: In case of insufficient ventilation, use NIOSH-approved organic vapor respirator
Hygiene Measures: Prohibit eating, drinking, and smoking in material handling areas, wash hands thoroughly after work
Appearance: Colorless to pale yellow liquid
Odor: Sweet, aromatic, similar to styrene
Odor Threshold: Approx. 0.1 ppm (styrene-like)
pH: Not applicable (non-aqueous)
Melting Point: -80°C
Boiling Point: 195-198°C (mixture of isomers)
Flash Point: 66°C (closed cup)
Evaporation Rate: Slower than butyl acetate
Flammability: Highly flammable liquid
Upper/Lower Flammability Limits: 0.9-7.0% (v/v) in air
Vapor Pressure: 0.3 mmHg at 20°C
Vapor Density: 4.5 (air = 1)
Relative Density: 0.91 g/cm³ at 20°C
Solubility: Insoluble in water; soluble in organic solvents (ethanol, acetone, benzene)
Partition Coefficient (log Kow): Approx. 3.5
Auto-ignition Temperature: 510°C
Decomposition Temperature: >200°C
Viscosity: 1.1 mPa·s at 25°C
Chemical Stability: Stable under recommended storage conditions with stabilizer present
Reactivity: Reactive with strong oxidizing agents, strong acids, and bases; may undergo exothermic polymerization without stabilizers
Polymerization: Risk of uncontrolled polymerization at elevated temperature, in the presence of free radicals or initiators
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, other harmful organic vapors
Conditions to Avoid: Heat, sparks, open flames, absence of stabilizer, contact with strong oxidizers
Likely Routes of Exposure: Inhalation, skin contact, eye contact, ingestion
Acute Toxicity: Harmful if swallowed; LD50 (oral, rat): ~2000 mg/kg (divinylbenzene mixture)
Skin Corrosion/Irritation: Causes skin irritation, may cause burns with prolonged exposure
Eye Damage/Irritation: Causes serious eye irritation
Respiratory or Skin Sensitization: May cause respiratory irritation or allergic skin reaction in susceptible people
Carcinogenicity: Styrene, a component/impurity, classified by IARC as Group 2B (possibly carcinogenic); DVB not specifically classified but considered suspect based on structure
Symptoms of Overexposure: Dizziness, nausea, headache, respiratory distress, drying or cracking of skin
Chronic Effects: May cause organ damage from repeated exposure; potential for central nervous system effects, liver, and kidney harm
Mutagenicity / Teratogenicity: No reliable information for DVB; related compounds have demonstrated mutagenicity in some tests
Ecotoxicity: Toxic to aquatic life; LC50 (fish, 96 h) ~1-10 mg/L (estimate based on aromatic compounds)
Persistence and Degradability: Moderate persistence in environment; not readily biodegradable; removal in water treatment unlikely without advanced oxidation
Bioaccumulative Potential: Moderate potential due to log Kow >3; potential for accumulation in aquatic organisms
Mobility in Soil: Low water solubility, may adsorb to sediments and organic matter
Other Adverse Effects: Potential for contaminated runoff if spilled; vapor emissions contribute to photochemical smog
Waste Disposal Methods: Dispose of liquid and contaminated materials as hazardous waste according to local, state, and federal regulations; incineration preferred in permitted facility
Container Disposal: Containers must be drained and triple-rinsed, then punctured or crushed prior to disposal
Precautions: Do not allow product or waste to reach surface water, sewers, or soil
Special Precautions for Landfill or Incineration: Avoid landfill disposal when possible; only incinerate in controlled conditions
UN Number: UN 3077
Proper Shipping Name: Environmentally hazardous substance, liquid, n.o.s. (divinylbenzene mixture)
Transport Hazard Class: 9 (miscellaneous dangerous substances)
Packing Group: III
Labels Required: Class 9 miscellaneous, Marine Pollutant if shipped by sea
Special Precautions: Avoid transport with food and animal feed; check compatibility with adjacent loads
Transport in Bulk: Follow MARPOL, IBC code for containment and spill response
Classification According to Regulatory Framework: OSHA hazardous chemical under 29 CFR 1910.1200; subject to EPCRA reporting; SARA Title III – Section 313 Not listed; TSCA Inventory – listed; DSL/NDSL – listed
European Union REACH: Registered substance, subject to use restrictions
California Proposition 65: Contains styrene, listed chemical; warning required for consumer exposure
Other National and Local Regulations: Classified as dangerous for the environment and for fire; stricter regulation for workplace exposure in some jurisdictions
Label Elements: Reference to Global Harmonized System (GHS) hazard pictograms and signal words
