Product Name: m-Diisopropylbenzene
Chemical Formula: C12H18
Synonyms: 1,3-Diisopropylbenzene; Meta-Diisopropylbenzene
CAS Number: 99-62-7
Use: Intermediate for organic synthesis; specialty solvent
Supplier Information: Manufacturer details, emergency phone number, and address should be clearly displayed on all product containers.
Recommended Use Restrictions: Not suitable for food, pharmaceutical, or personal care applications.
Classification: Flammable liquid (Category 3), Acute toxicity (Oral, Category 4), Skin irritation (Category 2), Eye irritation (Category 2A), Environmental hazard (Aquatic Chronic 2)
Signal Word: Warning
Hazard Statements: Flammable liquid and vapor. Harmful if swallowed. Causes skin and eye irritation. May cause long-lasting harmful effects to aquatic life.
Pictograms: Flame, Exclamation Mark, Environment
Precautionary Statements: Keep away from heat sources, sparks, open flames. Wear protective gloves and eye protection. Avoid release to the environment. Do not eat, drink, or smoke during handling.
Additional Information: Vapors heavier than air; can travel along surfaces to distant ignition sources.
Chemical Identity: m-Diisopropylbenzene
CAS Number: 99-62-7
Concentration: 99% or higher (by weight)
Impurities: Trace quantity of ortho- and para-dialkylbenzene isomers; no ingredients classified as hazardous in concentrations above disclosure thresholds.
Inhalation: Move affected person to fresh air immediately. If breathing is difficult, provide oxygen administered by trained personnel. Seek medical attention for persistent symptoms.
Skin Contact: Wash skin thoroughly with soap and water for at least 15 minutes. Remove contaminated clothing. Get medical attention for continued irritation.
Eye Contact: Rinse eyes with plenty of water, holding eyelids open. Continue rinsing for several minutes. Seek medical attention for persistent discomfort.
Ingestion: Do not induce vomiting. Rinse mouth with water if person is conscious. Never give anything by mouth to an unconscious individual. Seek medical attention immediately.
Most Important Symptoms: Skin and eye irritation, respiratory discomfort, headache, nausea upon ingestion or inhalation.
General Advice: Provide medical personnel with MSDS.
Extinguishing Media: Use dry chemical, carbon dioxide, alcohol-resistant foam, or water spray. Avoid using direct water streams as liquid may spread fire.
Hazardous Combustion Products: Carbon monoxide, carbon dioxide.
Flammability Properties: Flash point around 65°C (closed cup). Vapors may form explosive mixtures with air.
Firefighting Equipment: Firefighters should use full protective clothing, including self-contained breathing apparatus.
Special Hazards: Containers exposed to fire may rupture or explode due to heat. Runoff from firefighting may cause environmental contamination.
Advice for Firefighters: Cool closed containers with water spray, isolate hazard area, and evacuate personnel from danger zone.
Personal Precautions: Evacuate unnecessary personnel. Provide adequate ventilation. Use personal protective equipment such as gloves, goggles, and respirator.
Environmental Precautions: Prevent product from entering drains, sewers, or waterways. Notify authorities if spill causes environmental pollution.
Methods for Containment: Absorb spill with non-combustible material such as sand, earth, or vermiculite.
Clean-Up Procedures: Use spark-proof tools and explosion-proof equipment. Collect material in appropriate containers for disposal. Decontaminate area with water.
Reference to Other Sections: See advice on personal protection and disposal considerations for more guidance.
Handling: Ground and bond containers and transfer equipment. Use non-sparking tools and explosion-proof instruments. Wear suitable protective gear. Avoid breathing vapors or direct skin contact.
General Hygiene: Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Prohibit eating, drinking, or smoking in work areas.
Storage: Store in tightly closed containers in a cool, well-ventilated location away from heat, flames, and ignition sources. Keep away from strong oxidizers and acids.
Incompatibilities: Strong oxidizing agents, acids, reducing agents.
Special Precautions: Storage area should be equipped with spill containment and fire suppression systems.
Exposure Limits: No specific occupational exposure limits set for m-Diisopropylbenzene. Maintain airborne levels below nuisance limits.
Engineering Controls: Ensure local exhaust ventilation at process locations. Use explosion-proof ventilation.
Eye Protection: Chemical safety goggles with side shields recommended.
Skin Protection: Nitrile or neoprene gloves. Chemical-resistant clothing for extensive exposure.
Respiratory Protection: Use NIOSH-approved organic vapor respirators where ventilation is insufficient.
Workplace Hygiene: Wash hands after handling and before eating or drinking.
Appearance: Clear colorless to pale yellow liquid
Odor: Aromatic, faint sweet odor
Melting Point: -55°C
Boiling Point: 230°C
Flash Point: 65°C (closed cup)
Vapor Pressure: 0.19 mmHg at 25°C
Vapor Density: Approximately 5 (air = 1)
Solubility in Water: Negligible
Density: 0.86 g/cm³ at 25°C
Auto-Ignition Temperature: 445°C
Viscosity: Not available
Partition Coefficient (n-octanol/water): log Kow estimated at 5.0
Chemical Stability: Stable under standard storage and handling conditions.
Hazardous Reactions: Reacts with strong oxidizing agents. May form explosive mixtures with air.
Conditions to Avoid: Heat, open flames, sparks, and incompatible chemicals.
Decomposition Products: Burning produces harmful fumes; carbon monoxide, carbon dioxide.
Polymerization: No hazardous polymerization studied.
Routes of Exposure: Inhalation, skin contact, eye contact, ingestion.
Acute Effects: Causes mild to moderate eye and skin irritation. Inhalation leads to respiratory tract irritation. Ingestion brings digestive discomfort, dizziness, headache.
Chronic Effects: Prolonged skin contact may result in defatting and dermatitis.
Toxicity Data: Oral LD50 (rat): about 3,400 mg/kg; Dermal LD50 (rabbit): greater than 2,000 mg/kg.
Carcinogenicity: Not listed as carcinogenic by IARC, NTP, or OSHA.
Other Effects: Not a known mutagen or reproductive toxin at typical exposures.
Ecotoxicity: Toxic to aquatic life, particularly in chronic exposure. LC50 (fish, 96 h): estimated at about 1-10 mg/L.
Persistence and Degradability: Not readily biodegradable. May persist in water and soil.
Bioaccumulation: High potential for bioaccumulation in aquatic organisms (log Kow >4).
Mobility: Limited mobility in soil, strong adsorption to organic matter.
Other Adverse Effects: Accidental spills may harm local aquatic systems and groundwater.
Waste Disposal Methods: Incinerate in approved facilities only. Never pour product into drains or natural waterways. Follow all applicable local, state, and federal regulations.
Contaminated Packaging: Empty containers may retain hazardous residues. Dispose in accordance with official regulations.
Recycling/Recovery: Use solvent recovery and recycling options whenever feasible.
UN Number: UN 1993
UN Proper Shipping Name: Flammable Liquid, N.O.S. (contains m-Diisopropylbenzene)
Transport Hazard Class: 3 (Flammable liquid)
Packing Group: III
Shipping Labels: Flammable liquid (Class 3)
Environmental Hazards: Marine pollutant under IMDG.
Special Transport Precautions: Keep containers upright and well-sealed in transit. Avoid close proximity to incompatible substances.
OSHA: Regulated as a hazardous chemical.
EPA: Not specifically listed under SARA Title III or CERCLA for spill reporting, but check for local reporting requirements.
TSCA: Listed on the US TSCA Inventory.
REACH: Registered substance in the EU.
Signal Words / Hazard Statements: Aligns with GHS and US HCS requirements.
Labeling Requirements: Includes hazard symbols, precautionary statements, supplier contact information, and batch identification.
Other Regulations: Follow all applicable state, federal, and international regulations regarding storage, handling, and transportation.
