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Chemical Name: 3,3-Dimethylhexane
Chemical Formula: C8H18
Chemical Family: Alkanes
Common Use: Research, reference standard, chemical synthesis
Appearance: Clear colorless liquid, hydrocarbon odor
Synonyms: Dimethyloctane isomers, branched hexane derivates
CAS Number: 562-49-2
Classification: Flammable liquid, possible skin and eye irritant
Key Risks: Highly flammable vapor and liquid, potential for vapor to cause dizziness or headache
Signal Word: Warning
Major Hazards: Inhalation can cause drowsiness, exposure to high concentrations may affect central nervous system, fires spread rapidly with this chemical involved
Substance: Pure 3,3-Dimethylhexane
Concentration: Typically >99% pure
Impurities: Small traces of related hydrocarbons may appear depending on synthesis method
Inhalation: Move outside or to fresh air immediately, apply rescue breathing if breathing stops
Skin Contact: Rinse skin thoroughly with mild soap and water, remove contaminated clothing
Eye Contact: Flush eyes with running water, keep eye open, get medical attention if irritation lingers
Ingestion: Do not provoke vomiting, rinse mouth, get medical help quickly
Extinguishing Media: Use foam, dry chemical, or carbon dioxide for small fires, avoid spraying water directly on burning liquid
Unusual Fire Hazards: Vapors travel to ignition sources easily, explosion danger in unventilated spaces
Special Protective Equipment: Wear self-contained breathing device, protective turnout gear
Firefighting Tips: Approach from upwind, contain runoff if possible
Evacuation: Get anyone not wearing protection away from spill area
Personal Protection: Wear gloves and chemical splash goggles, consider a respirator in confined or badly ventilated places
Spill Cleanup: Absorb liquid with sand, earth, or inert absorbent, avoid drains, ventilate area well
Environmental Steps: Stop spread to waterways, inform local response teams if large volumes escape
Storage Needs: Store in tightly closed containers, place in well-ventilated, dry, cool areas, keep away from heat, sparks or open flames
Handling Routine: Avoid inhaling vapor or mist, minimize static discharge, keep containers properly labeled
Other Concerns: Use only with proper grounding and bonding when transferring liquid between containers
Ventilation: Work outdoors or use chemical fume hood, mechanical exhaust preferred
Respiratory Protection: Consider respirators with organic vapor cartridge in enclosed spaces or high concentrations
Protective Clothing: Wear chemical-resistant gloves, safety goggles, flame-resistant lab coats
Exposure Limit: No specific OSHA or ACGIH exposure limits for 3,3-dimethylhexane, use good industrial hygiene practice
Physical State: Liquid
Appearance: Clear and colorless
Odor: Hydrocarbon, faint petroleum scent
Boiling Point: 115-125°C
Melting Point: Below -100°C
Flash Point: Around -7°C (cold and flammable)
Solubility: Insoluble in water, mixes with most organic solvents
Vapor Pressure: Medium at room temperature
Specific Gravity: Lower than water; floats on water surfaces
Chemical Stability: Remains stable at room temperature under proper storage conditions
Conditions to Avoid: Heat, open flames, sparks, oxidizing agents
Hazardous Decomposition: Produces carbon monoxide and carbon dioxide if burned
Reactive Compounds: Can react with strong oxidizers such as nitrates, peroxides
Acute Effects: May cause mild irritation to eyes or skin, vapor can bring on dizziness or drowsiness
Chronic Exposure: Prolonged inhalation of high concentrations of hydrocarbons can impact nervous system
Routes of Exposure: Eyes, skin, lungs, mouth
Carcinogenic Status: Not listed as carcinogenic by IARC, NTP, or OSHA
Aquatic Impact: Floats on water, causes harm to aquatic organisms if released
Persistence: May persist as a film on water surfaces, slows oxygen transfer
Mobility in Soil: Low solubility, but spreads on sediments
Bioaccumulation Potential: Has the potential to build up in the environment if not contained
Waste Handling: Collect and label all residues for authorized disposal
Disposal Method: Incinerate with proper controls; avoid drains, watercourses, open environments
Regulatory Knock-On: Treat as hazardous waste due to flammability and environmental risk
UN Number: Classified as a flammable liquid for shipping
Hazard Class: Class 3 (Flammable Liquids)
Proper Shipping Name: Hydrocarbons, Liquid, n.o.s. (contains 3,3-Dimethylhexane)
Packing Group: II or III depending on concentration and container size
Special Precautions: Protect against physical damage, keep containers upright and sealed during moves
OSHA Status: Considered hazardous based on flammable properties
EPA Status: Overseen for release prevention, hazardous waste requirements
SARA Title III: Not listed under extremely hazardous substances, general controls apply
Labeling: Requires flammable liquid warnings in transit and in storage
Workplace signage: Follows the rules for hydrocarbons, proper ventilation and PPE reminded at points of use
