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Name: 2,2,3-Trimethylpentane
Chemical Formula: C8H18
CAS Number: 564-02-3
Description: This hydrocarbon shows up as a clear, colorless liquid with a gasoline-like odor. Used most often as a fuel additive, it's a good example of what goes into improving octane ratings. Knowing exactly what’s in the barrel matters, especially if the chemical ends up in a workplace or a spill.
Main Hazards: Flammable liquid and vapor, causes irritation to skin and eyes, inhalation may cause dizziness or drowsiness, prolonged exposure may affect the nervous system.
GHS Classification: Flammable liquids, Category 2; Acute toxicity, oral, Category 5; Skin irritation, Category 3
Pictograms: Flame, Exclamation Mark
Signal Word: Danger
Hazard Statements: Highly flammable liquid and vapor; may cause respiratory irritation, may cause drowsiness or dizziness; may be harmful if swallowed.
Chemical: 2,2,3-Trimethylpentane
Purity: Usually over 98% in industrial and laboratory settings; presence of other isomers or related hydrocarbons is common in fuel-grade samples.
Inhalation: Move to fresh air. Symptoms like headache, nausea, or dizziness after breathing vapor mean the area lacks good ventilation. If someone isn’t breathing right or loses consciousness, medical attention is the only smart move.
Skin Contact: Wash with soap and water right away. Don’t hang around in contaminated clothing. Redness or irritation sometimes clears up fast, but persistent symptoms need a doctor.
Eye Contact: Rinse carefully with water. Open eyelids wide and rinse for several minutes. Any pain, discomfort, or blurred vision after that calls for a doctor to check it out.
Ingestion: Don’t force vomiting except if a medical professional tells you, because aspiration can do more damage than swallowing. Rinse mouth and seek medical attention.
Suitable Extinguishing Media: Foam, dry chemical, carbon dioxide—the usual suspects for flammable liquids.
Unsuitable Media: Water can spread this stuff, so aim with care.
Hazardous Combustion Products: Burning produces irritating fumes, including carbon monoxide and other hydrocarbons.
Protective Equipment for Firefighters: Full gear and self-contained breathing apparatus help handle the fumes and blaze.
Special Precautions: Vapors can travel and ignite at a distance from the source, especially in confined spaces or poorly ventilated rooms.
Personal Precautions: Keep any ignition sources far away. If there’s a spill, no open flames or sparks should be anywhere nearby. Non-sparking tools help avoid trouble.
Environmental Precautions: Prevent product from reaching drains, sewers, or surface water—runoff means risk to the wider world, not just the workshop.
Cleanup Methods: Use inert absorbents like sand or vermiculite for small spills, shovel up and place in a chemical waste container. Ventilate the area fully, and wash any contaminated surfaces to keep vapors from lingering.
Handling: Always ground containers and equipment when transferring this liquid. Work in well-ventilated areas, avoid breathing vapors, and keep away from open flames, sparks, or static discharge. Wearing gloves and goggles is more habit than caution for those used to handling solvents.
Storage: Store in cool, dry, well-ventilated areas away from strong oxidizers. Use tightly closed containers and keep them out of direct sunlight. Labeling matters, especially since clear liquids don’t hint at their hazards. Emergency spill kits and fire protection should stay close by for any sizable volume.
Engineering Controls: Local exhaust ventilation creates the best chance for safe air quality, and explosion-proof equipment removes the silent threat of an accidental spark.
Personal Protective Equipment: Wearing chemical-resistant gloves and eye protection reduces risk of splash injuries, and if there’s a risk of inhalation, a respirator fitted for organic vapors makes sense.
Exposure Limits: No established OSHA Permissible Exposure Limit, but NIOSH and ACGIH keep recommended guidelines. Minimizing skin and lung contact remains common sense, no matter the numbers.
Appearance: Clear, colorless liquid
Odor: Gasoline-like
Melting Point: Around -98°C
Boiling Point: Near 124°C
Flash Point: Roughly -6°C (closed cup)
Vapor Pressure: Moderate at room temperature
Solubility: Essentially insoluble in water
Density: Close to 0.7 g/cm³
Vapor Density: Heavier than air, which means vapors will travel and collect near the ground instead of disappearing up high.
Chemical Stability: Stable at standard temperatures if kept from open flames, sparks, or strong oxidizers.
Reactivity: Avoid contact with oxidizers like chlorine, because violent reactions don’t need a second invitation.
Hazardous Decomposition Products: Heating or burning can produce a mess of toxic gases including carbon monoxide.
Acute Exposure Effects: Can irritate eyes, skin, and respiratory tract. Inhaling a lot makes people dizzy or drowsy, so good ventilation helps prevent that. Single exposures rarely cause lasting harm at modest levels, but a big gulp can be trouble.
Chronic Exposure: Extended contact can trigger headaches, nausea, or fatigue. Long-term nervous system effects pop up in some cases where exposure goes unchecked. There’s no strong evidence of carcinogenicity, but data are limited.
Ecotoxicity: Harmful to aquatic life with long-lasting effects. The low water solubility means slicks spread on the surface, threatening fish and other creatures that rely on clean water.
Bioaccumulation: Not expected to build up much in body tissues, though it does stick around in the environment longer than some other hydrocarbons.
Mobility: Floats on water and evaporates quickly under normal conditions, shifting the risk from ground to air.
Methods: Dispose through approved facilities for hazardous waste. Pouring it down the drain or tossing in regular trash causes more harm than it solves.
Special Instructions: Used absorbents, contaminated packaging, and wash water should all follow hazardous waste protocols. Waste containers need clear labeling so nothing ends up where it shouldn’t.
UN Number: UN 1262
Proper Shipping Name: Octanes
Hazard Class: 3 (Flammable Liquids)
Packing Group: II
Special Precautions: Shipping this chemical means flammable liquid protocols stay front and center—no rough handling, keep upright, and segregate from incompatible materials.
U.S. Regulations: Classified as hazardous under OSHA Hazard Communication Standard; requires clear labeling and hazard training for workers.
EPA Listings: Not subject to specific major restrictions, but any spills or releases fall under general Clean Water Act and Clean Air Act requirements.
International Regulations: Covered by GHS standards for labeling, transport, and worker safety. Different countries may have thresholds for reporting releases or exposure, but the basics on handling and storage line up with U.S. practice.
Right to Know: Always a good move to check local and federal databases for updated hazard information since rules shift based on new data and environmental testing.
