Product Name: m-Diisopropenylbenzene
Chemical Formula: C12H14
Other Names: 1,3-Diisopropenylbenzene
CAS No.: 2157-22-0
Recommended Use: Intermediate in organic synthesis, monomer for specialty polymers
Restrictions on Use: Use limited to professional settings; not for consumer or food-related applications
Supplier Contact: Manufacturer or distributor address and emergency contact number
Emergency Telephone: Local poison control or emergency services
Classification: Flammable Liquid (Category 3); Acute Toxicity, Oral (Category 4); Skin Irritant (Category 2); Eye Irritant (Category 2A); Environmental Hazard (Aquatic Chronic Category 3)
Label Elements: Flame symbol, exclamation mark, environment symbol
Signal Word: Warning
Hazard Statements: Causes skin irritation; causes eye irritation; suspected of damaging fertility or the unborn child; harmful if swallowed; flammable liquid and vapor; harmful to aquatic life with long lasting effects
Precautionary Statements: Avoid breathing vapors; use only with adequate ventilation; wear protective gloves and eye protection; keep away from heat, sparks, open flames; no smoking; avoid release to environment
Chemical Name: m-Diisopropenylbenzene
CAS No.: 2157-22-0
Concentration: ≥98% by weight
Impurities: May contain minor amounts of related aromatic hydrocarbons
Additives: Not present in significant quantity
Other Identifiers: No additional hazardous constitutents
Inhalation: Remove person to fresh air; monitor for persistent cough or respiratory symptoms; seek medical attention if symptoms do not improve
Skin Contact: Remove contaminated clothing; wash skin immediately with plenty of water and soap; do not delay washing; medical treatment necessary if irritation persists
Eye Contact: Rinse cautiously with water for at least 15 minutes; remove contact lenses; continue rinsing; prompt medical examination advised
Ingestion: Rinse mouth thoroughly; do not induce vomiting; seek immediate medical attention; give water if victim is conscious
Acute and Delayed Symptoms: Irritation to mucous membranes, eyes, skin, central nervous system depression possible after significant exposure
Suitable Extinguishing Media: Dry chemical, alcohol-resistant foam, carbon dioxide, water spray for small fires
Unsuitable Media: Do not use water jet; risk of spreading burning liquid
Hazards from Decomposition: Emits toxic fumes under fire, including carbon monoxide, carbon dioxide, and aromatic compounds
Special Protective Equipment for Firefighters: Full protective clothing; self-contained breathing apparatus; avoid exposure to smoke
Fire and Explosion Hazards: Vapors may form explosive mixtures with air; closed containers may rupture due to pressure increase; flashback hazard
Personal Precautions: Remove ignition sources; ventilate area; avoid breathing vapors; isolate spill area; restrict non-essential personnel
Protective Equipment: Wear chemical-resistant gloves, eye protection, antistatic footwear, coveralls
Spill Cleanup Methods: Contain spill with inert absorbent material (sand, earth, vermiculite); collect material and place in tightly closed chemical waste container; wash spill area with water after cleanup
Environmental Precautions: Prevent entry to sewers, surface waters, or soil; notify appropriate authorities in case of large spills
Additional Advice: Dispose of contaminated cleaning materials consistent with local and national regulations
Safe Handling: Handle in well-ventilated areas; avoid inhalation or direct contact; use non-sparking tools and proper grounding of equipment; keep containers tightly closed when not in use; maintain hygiene standards
Storage Conditions: Store in cool, dry, well-ventilated location; protect from direct sunlight and incompatible substances; keep away from heat sources and ignition points
Incompatible Materials: Strong oxidizers, acids, bases
Packaging Materials: Use containers specifically approved for flammable liquids; avoid plastic containers unless chemically compatible
Occupational Exposure Limits: No established occupational limits for this substance; minimize exposure by engineering controls
Engineering Controls: Use process enclosures, local exhaust ventilation, or other engineering controls to maintain airborne levels below recommended exposure limits
Personal Protective Equipment: Wear chemical-resistant gloves (nitrile, neoprene); eye/face protection such as chemical safety goggles; flame-resistant lab coat or coveralls; use approved respirator if ventilation is insufficient
Hygiene Measures: Wash hands, forearms, and face thoroughly after handling; remove contaminated clothing before entering eating areas; shower and change clothes at end of shift
Appearance: Colorless to pale yellow liquid
Odor: Characteristic aromatic odor
Odor Threshold: Not determined
pH: Not applicable (non-aqueous liquid)
Melting Point/Freezing Point: -40°C (approximate)
Initial Boiling Point and Boiling Range: 234–240°C
Flash Point: 85°C (closed cup)
Evaporation Rate: Not available
Flammability: Flammable liquid and vapor
Upper/Lower Flammability Limit: Upper: 6.5%, Lower: 0.8% (estimated)
Vapor Pressure: 0.05 mm Hg at 20°C
Vapor Density: 5.5 (air = 1)
Relative Density: 0.890 (water = 1)
Solubility in Water: Insoluble
Partition Coefficient (n-octanol/water): log Pow 4.8 (estimated)
Auto-ignition Temperature: 410°C
Decomposition Temperature: Not determined
Viscosity: 1–2 mPa.s (20°C)
Chemical Stability: Stable under normal storage and handling conditions
Reactivity: Reacts with strong oxidizing agents, acids, and bases
Hazardous Reactions: Polymerization possible at high temperatures; exothermic reactions may occur with incompatible materials
Conditions to Avoid: Heat, sparks, open flames, static discharge, direct sunlight
Incompatible Materials: Oxidizing agents (e.g., peroxides), acids, halogens
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, aromatic hydrocarbons, unidentified organic compounds upon burning or decomposition
Acute Toxicity: LD50 (oral, rat): estimated 1500 mg/kg; LD50 (dermal, rat): >2000 mg/kg
Skin Corrosion/Irritation: May cause redness and irritation on prolonged or repeated contact
Serious Eye Damage/Irritation: Causes eye irritation, watering, and stinging
Respiratory Sensitization: Not classified as a sensitizer based on available data
Skin Sensitization: Not expected based on animal testing
Germ Cell Mutagenicity: Data insufficient for classification
Carcinogenicity: Not listed as carcinogen by IARC, NTP, or OSHA
Reproductive Toxicity: Evidence of developmental/reproductive toxicity is limited; precaution advised
STOT – Single Exposure: May cause drowsiness or dizziness at high exposure
STOT – Repeated Exposure: Not classified due to lack of data
Aspiration Hazard: Not expected to be an aspiration hazard
Toxicity to Aquatic Organisms: LC50 (fish, 96 h): 34 mg/L (estimated); EC50 (Daphnia, 48 h): 21 mg/L (estimated)
Persistence and Degradability: Readily biodegradable under aerobic conditions, but complete breakdown in water may be slow
Bioaccumulative Potential: High potential for bioaccumulation (log Pow >4)
Mobility in Soil: Low mobility, adsorbs strongly to soil particles
Other Adverse Effects: Product may be harmful to aquatic organisms at concentrations above the predicted no-effect concentration; avoid release into the environment
Waste Treatment Methods: Send unused material or waste to licensed hazardous waste treatment facility; incineration recommended under controlled conditions
Contaminated Packaging: Decontaminate containers before recycling or disposal; puncture and crush empty containers before final disposal
Prohibited Disposal Methods: Do not dispose via sewage system; prohibited from open dumping
Regulatory Considerations: Comply with local, state, and federal regulations regarding chemical disposal; obtain waste code designation from authority
UN Number: UN 1993
Proper Shipping Name: Flammable Liquid, N.O.S. (m-Diisopropenylbenzene)
Transport Hazard Class: 3 (Flammable liquids)
Packing Group: III
Environmental Hazards: Marine pollutant (as shipped in bulk quantities)
Special Precautions: Keep containers upright, tightly closed, and away from sources of ignition; verify labeling and documentation requirements specific to mode of transport
Regulatory Status: Subject to DOT, IATA, IMDG transport rules for hazardous materials
U.S. Regulations: Listed on TSCA Inventory; OSHA hazardous chemical; SARA 313 chemicals not present
Europe (REACH): Registered under EC No. 606-373-2; subject to standard registration, evaluation, and restriction protocols
Canada: DSL/NDSL listed
Other Regulatory Information: Product-specific workplace labeling required; chemical use restrictions may apply in environmental protection zones; ensure compliance with local, state, and national regulations
