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Chemical Name: 1,3-Dimethylcyclopentane.
Chemical Formula: C7H14.
Synonyms: Dimethylcyclopentane, Unsubstituted 1,3 positions.
Appearance: Colorless liquid.
Odor: Mild hydrocarbon scent.
Common Uses: Blending component for fuels, solvent for industrial and research applications.
Hazard Classification: Flammable liquid and vapor; may cause skin or eye irritation; possible narcotic effects after inhalation.
Signal Word: Warning.
Hazard Statements: Liquid catches fire easily; vapors build up quickly in closed spaces.
Precautionary Statements: Keep away from open flames and hot surfaces; avoid breathing vapors; use only outdoors or in ventilated areas.
Physical Hazards: Rapid evaporation in warmth increases fire risk; invisible vapors can travel and ignite elsewhere.
Health Hazards: Exposure can dry the skin; inhalation brings headaches or dizziness if not careful.
Main Ingredient: 1,3-Dimethylcyclopentane (pure compound, typically over 98%).
Impurities: Trace hydrocarbons, usually less than 2% in well-prepared samples.
Inhalation: Take affected person outside to fresh air, allow to rest, monitor for dizziness or drowsiness; get medical help if symptoms don’t clear.
Skin Contact: Wash with plenty of soap and water; remove contaminated clothing; seek medical attention if irritation continues.
Eye Contact: Rinse carefully with clean water for several minutes, holding eyelids open; get medical advice if discomfort remains.
Ingestion: Rinse mouth, avoid inducing vomiting; medical help is important if large amounts swallowed.
Most Important Symptoms: Headache, nausea, skin dryness, or redness.
Suitable Extinguishing Media: Use foam for bigger spills, dry chemical, or carbon dioxide for smaller fires; never use water straight on the burning liquid.
Hazards from Fire: Burns with a strong, sometimes invisible flame; smoke contains carbon monoxide and other toxic gases.
Protective Equipment: Firefighters should work in self-contained breathing gear and full protective clothing to avoid inhaling hot vapors.
Special Procedures: Cool nearby containers with water, stay upwind, contain any runoff from firefighting.
Personal Precautions: Remove ignition sources, bring fresh air into the area, avoid touching spilled material, use gloves and goggles.
Environmental Precautions: Block spills from drains or soil, stop leak if safe; try not to flush down sewer.
Methods for Cleaning Up: Use absorbent material—like sand or earth—for small spills, collect in secure container for disposal; ventilate area well, dispose using proper channels.
Safe Handling Advice: Open containers in well-ventilated spaces, ground transfer lines and vessels, avoid static discharge.
Storage Conditions: Store in tight, properly labeled containers away from sunlight and heat; keep at normal temperatures and away from oxidizers or acids.
Precautions: Don’t let unauthorized people handle; never smoke near open containers.
Occupational Exposure Limits: No established limits, but handle like other volatile hydrocarbons.
Engineering Controls: Good general ventilation; use fume hoods for lab work; proper explosion-proof electrical equipment in storage and handling areas.
Personal Protection: Wear chemical splash goggles, nitrile gloves, and flame-retardant clothing; use face shields for larger-scale uses.
Respiratory Protection: Wear an organic vapor respirator if working in closed or poorly ventilated places.
Physical State: Liquid at room temperature.
Color: Clear or slightly yellow.
Odor: Sweet, reminiscent of gasoline or other hydrocarbons.
Boiling Point: About 102°C.
Melting Point: Below -100°C.
Vapor Pressure: Moderate, enough to cause evaporation at room temperature.
Solubility: Doesn’t mix well with water; dissolves in most organic solvents.
Density: Slightly lighter than water, will float.
Autoignition Temperature: Catching fire above 230°C.
Flash Point: Tends to catch with flame near -3°C.
Partition Coefficient: High, so it prefers organic over water.
Stability: Keeps stable under ordinary handling and storage.
Reactivity: Burns fiercely near flames or sparks.
Avoid: Strong oxidizers make accidents more likely; sunlight or heat speed up vapor buildup.
Decomposition: In fires, breaks down into carbon monoxide, carbon dioxide, and small carbon fragments.
Routes of Exposure: Can get into the body by breathing vapors, swallowing, or through skin.
Acute Health Effects: Dizziness, drowsiness, nausea on breathing in; skin can redden and dry if exposed for a long time.
Chronic Effects: Repeated exposure will dry skin over time and may irritate the lungs.
Carcinogenicity: Not listed as a known risk by top authorities so far.
Other Information: No major cases of poisoning, but hydrocarbon exposure brings risk if concentration rises high.
Environmental Impact: Does not dissolve in water, likely to float and spread on surfaces; not persistent but can harm aquatic life because of built-up hydrocarbons.
Mobility in Soil: Tends to evaporate, or seep down if spilled in quantity.
Bioaccumulation: May build up in fatty tissues of aquatic animals.
Aquatic Toxicity: Oil films on ponds will hinder oxygen exchange and poison fish and insects.
General Advice: Take leftover chemical and contaminated gear to a facility that can handle hazardous organics.
Do Not: Flush to sewer, burn in open containers, or toss out with regular trash.
Procedures: Neutralize leftover liquid under expert supervision or use a permitted incinerator; triple-rinse shipping drums before recycling.
UN Number: Classified under flammable liquids for highway, rail, and vessel shipments.
Proper Shipping Name: Flammable liquid, n.o.s. (not otherwise specified).
Transport Hazard Class: Group 3 (flammable).
Packing Group: Group II (moderate hazard).
Special Precautions: Label cargo; supervise transfer; follow fire department guidelines for fuel-like chemicals during shipment.
Regulations: Recognized by agencies focused on flammable hydrocarbons and hazardous workplace chemicals.
Workplace Safety: Employers follow standards that protect employees from flammable organic liquid exposures; Safety Data Sheets required by law in many workplaces.
Community Right-to-Know: Facilities handling large quantities may have to report inventories to local emergency planning authorities.
International Status: Included by bodies monitoring dangerous goods for safe transportation.
