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Product Name: 4-Bromo-1,2-Dimethylbenzene
Chemical Formula: C8H9Br
CAS Number: 615-39-4
Synonyms: 1,2-Dimethyl-4-bromobenzene, p-Bromo-o-xylene
Recommended Use: Research and development, chemical synthesis
Supplier Details: Scientific suppliers practicing safety management and traceable distribution
Emergency Contact: Consult local poison control or CHEMTREC hotline, accessible through public directories
GHS Classification: Flammable liquid, eye irritant, skin irritant
Pictograms: Exclamation mark, flame
Signal Word: Warning
Hazard Statements: Flammable liquid and vapour; causes skin irritation; causes serious eye irritation
Precautionary Statements: Keep away from open flames and hot surfaces; avoid breathing mist, vapours or spray; wash hands thoroughly after handling; wear protective gloves, protective goggles, and suitable clothing
Potential Health Effects: Irritation to skin, eyes, and respiratory tract; serious cases may prompt blistering or persistent inflammation; ingestion risks include gastrointestinal discomfort and nausea
Chemical Name: 4-Bromo-1,2-Dimethylbenzene
Common Name: p-Bromo-o-xylene
Concentration: More than 95% by weight
Impurities: Minor related aromatic compounds, usually below regulatory thresholds
Molecular Weight: 185.07 g/mol
Purity Assurance: Analytical testing verifies batch composition before distribution
Inhalation: Remove person to fresh air, keep at rest, seek medical attention if symptoms persist or worsen
Skin Contact: Rinse thoroughly with soap and water, remove contaminated clothing, seek medical attention for persistent irritation
Eye Contact: Rinse immediately and continuously with plenty of water for at least 15 minutes, seek medical care for continuing irritation
Ingestion: Rinse mouth, do not induce vomiting, seek immediate medical assessment, monitor for symptoms of toxicity
Suitable Extinguishing Media: Dry chemical, CO2, foam, water spray
Specific Hazards: Vapours can accumulate and ignite; combustion releases toxic bromine compounds and carbon monoxide
Protective Equipment: Self-contained breathing apparatus and full protective gear for fire situations
Firefighting Strategies: Use standard fire-fighting measures, cool exposed containers with water, avoid runoff contamination
Explosion Risk: Vapours may form explosive mixtures with air, so proper ventilation is critical
Personal Precautions: Evacuate area, ventilate; use appropriate PPE including gloves, goggles, and suitable respirator
Environmental Precautions: Prevent entry into waterways, drains, and sewers; isolate spill area with non-combustible absorbent material such as sand or earth
Cleanup Methods: Collect spilled product mechanically, seal in containers for disposal, wash area with water and detergent
Reporting: Notify regulatory authorities as required by local and national guidelines
Secondary Loss Prevention: Store clean-up materials in sealed hazardous waste bins, use spill kits for small releases
Handling: Maintain adequate ventilation, avoid breathing vapours or dust, minimize contact with skin and eyes, use non-sparking tools
Storage Conditions: Keep containers tightly closed, store in cool, dry, well-ventilated area, segregate from oxidizing agents and acids
Container Requirements: Use chemically resistant, properly labeled vessels that prevent leakage and evaporation
Incompatible Materials: Strong oxidizers, bases, and reactive metals can cause hazardous reactions
Special Precautions: Train personnel in chemical hygiene practices specific to aromatic brominated hydrocarbons
Exposure Limits: No OSHA or ACGIH exposure limits established for this compound
Engineering Controls: Implement local exhaust ventilation, use fume hoods for laboratory-scale activities
Personal Protective Equipment: Chemical-resistant gloves (nitrile recommended), splash goggles, laboratory coat, flame-resistant clothing when handling quantities at scale
Respiratory Protection: Use NIOSH-approved respirators if risk of airborne contaminant formation exists
Hygiene Measures: Avoid eating or drinking in work area; wash thoroughly before breaks and after work; remove contaminated clothing promptly
Appearance: Colourless to pale yellow liquid
Odour: Mild aromatic, sometimes pungent
Boiling Point: 211 – 213°C (411 – 415°F)
Melting Point: -10°C (14°F)
Flash Point: 82°C (179°F)
Vapour Pressure: Low at ambient temperature, increases with heat
Solubility: Insoluble in water, soluble in organic solvents such as benzene, ether, and chloroform
Density: 1.37 g/cm3 at 25°C
Refractive Index: 1.558 – 1.561 at 20°C
Viscosity: Moderate for aromatic liquids, non-viscous under normal conditions
Chemical Stability: Stable under standard storage and handling conditions
Hazardous Reactions: Exposure to heat, flames, or strong oxidizers causes decomposition and brominated by-products
Conditions to Avoid: Excessive heat, ignition sources, prolonged sunlight, exposure to incompatible substances
Incompatible Materials: Avoid oxidizing and reducing agents, strong acids or alkalis
Decomposition Products: Bromine vapours, hydrogen bromide, carbon oxides released on combustion or decomposition
Likely Routes of Exposure: Skin contact, eye contact, inhalation of vapours, ingestion
Acute Toxicity: LD50 not precisely established, toxicity consistent with aromatic brominated hydrocarbons; may provoke headache, nausea, dizziness on exposure
Skin Irritation: Results in redness, swelling, sometimes blistering
Eye Irritation: May cause pain, redness, watering, and blurred vision
Respiratory Sensitization: Cough, sore throat, respiratory discomfort reported after high-level exposure
Chronic Effects: Long-term exposure data limited; similar compounds suggest potential for dermatitis, liver, or kidney effects after repeated high exposure
Carcinogenicity/Mutagenicity: No established evidence of carcinogenicity, but related compounds require cautious handling
Environmental Fate: Non-biodegradable; persists in soil and aquatic environments
Aquatic Toxicity: Toxic to fish and invertebrates, disrupts membrane function
Bioaccumulation Potential: Aromatic brominated compounds can accumulate in food chains
Mobility in Soil: Low solubility in water reduces leaching, but vapours can move
Persistence and Degradability: Resistant to natural microbial breakdown; slow photodegradation in sunlight
Precaution: Avoid release to environment, employ appropriate spill containment and waste collection practices
Waste Disposal Methods: Collect in compatible chemical waste containers, label accurately, and send for incineration by licensed facilities
Small Quantities: Absorb on non-reactive material like vermiculite for laboratory-scale disposal
Contaminated Packaging: Rinse containers three times, puncture, and dispose of according to local hazardous waste regulations
Special Precautions: Never pour into drains, watercourses, or general waste; document all disposal activities
UN Number: UN 1993
Proper Shipping Name: Flammable Liquid, N.O.S. (contains 4-Bromo-1,2-Dimethylbenzene)
Transport Hazard Class: 3 – Flammable liquids
Packing Group: III
Labelling Requirements: Flammable liquid symbol, ensure clear, durable hazard labels
Special Transport Notes: Secure upright, segregate from oxidizers, check container integrity before shipping
Regulatory Transport Guidance: Follow regional and international rules for shipment of laboratory and industrial chemicals
Classification: Not specifically listed in most national priority lists, but covered under health, safety, and chemical control statutes
TSCA Inventory: Listed
REACH Status: Registration required if manufactured or imported over threshold amounts into EEA
Hazard Communication: Requires Safety Data Sheet and compliant labelling for workplace use
Workplace Safety: Employers maintain training records, exposure assessments, and incident reporting in compliance with local legislation
Environmental Controls: Prevent releases exceeding regulatory thresholds; observe permit conditions for emissions and discharges
