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Product Name: Pentamethylheptane
Synonyms: 2,2,3,3,5,5,6-Heptamethyloctane
Chemical Formula: C12H26
Molecular Weight: 170.34 g/mol
Recommended Use: Laboratory chemical, research substance, solvent applications
Supplier Information: Manufacturer and contact information required for workplace documentation
Emergency Telephone Number: Local poison control, fire department, or supplier’s emergency line
GHS Classification: Flammable liquid (Category 2), Aspiration hazard (Category 1)
Label Elements: Signal word: Danger; Pictograms: Flame, Health hazard
Hazard Statements: Highly flammable liquid and vapor; May be fatal if swallowed and enters airways
Precautionary Statements: Keep away from heat, sparks, open flames; Avoid breathing vapor or mist; Use explosion-proof electrical equipment
Health Hazards: Dizziness, drowsiness, possible lung irritation, chemical pneumonitis upon aspiration
Environmental Hazards: Harmful to aquatic life due to persistence and bioaccumulation potential
Chemical Name: Pentamethylheptane
CAS Number: 107-83-5
Concentration: >98% by weight
Impurities: Trace hydrocarbon contaminants, lower or higher alkanes (generally <1%)
Inhalation: Remove to fresh air, keep person comfortable, obtain medical attention for prolonged symptoms
Skin Contact: Wash thoroughly with soap and water, remove contaminated clothing, seek care if irritation persists
Eye Contact: Rinse immediately with water for at least 15 minutes, seek medical advice if discomfort develops
Ingestion: Do not induce vomiting, rinse mouth, get medical help quickly to rule out chemical pneumonitis
General Advice: Provide physician with product and MSDS, pay special attention to aspiration risk
Suitable Extinguishing Media: Dry chemical, CO2, foam, or water spray
Unsuitable Media: High-pressure water jets can spread liquid and increase vapor hazard
Specific Hazards: Vapor may form explosive mixtures with air; can flow along surfaces to ignition sources
Hazardous Combustion Products: Carbon monoxide, carbon dioxide, possibly other hydrocarbons
Protective Equipment: Self-contained breathing apparatus, full protective gear, avoid inhalation of combustion products
Advice for Firefighters: Cool containers with water spray to prevent rupture, evacuate area if necessary, fight fire from upwind position
Personal Precautions: Wear protective gloves, goggles, flame-retardant clothing, ventilate affected area, keep away from ignition sources
Environmental Precautions: Prevent entry into drains, sewers, or waterways using sand, earth, or approved barriers
Methods for Containment: Dike spilled material, stop leak if safe to do so; avoid runoff
Cleanup Procedures: Absorb with inert material such as vermiculite or sand; dispose in accordance with local regulations; clean area with detergent and water
Handling: Work in a well-ventilated area, ground/bond containers during transfer, use only non-sparking tools, avoid inhalation and skin contact, wash hands after use
Storage: Keep in tightly sealed original container, store away from direct sunlight, open flames, and incompatible chemicals (oxidizers, acids); recommended storage temperature: ambient, away from hot surfaces
Special Precautions: Post area with flammable material warnings, inspect containers frequently for leaks, segregate from strong oxidizing agents
Safe Transfer Procedures: Use closed systems or local exhaust ventilation; never use compressed air to move product
Engineering Controls: Use chemical fume hood or local exhaust, ensure electrical systems are explosion-proof
Exposure Limits: No established occupational exposure limits specific to pentamethylheptane; manage as for similar aliphatic hydrocarbons (keep levels as low as possible)
Personal Protective Equipment: Safety goggles or face shield, chemical-resistant gloves (nitrile, neoprene), flame-retardant lab coat, antistatic footwear
Respiratory Protection: Use air-purifying respirator with organic vapor cartridge for high concentration or vapor
Hygiene Measures: Do not eat, drink, or smoke during handling; wash thoroughly after work; launder contaminated clothing
Appearance: Colorless liquid, clear
Odor: Faint hydrocarbon scent
Odor Threshold: Not established
pH: Not applicable (non-aqueous)
Melting/Freezing Point: Approx. -10°C
Boiling Point/Range: 182-185°C
Flash Point: Approx. 51°C (open cup method)
Evaporation Rate: Moderate; slower than acetone
Flammability: Liquid and vapor are flammable
Upper/Lower Explosion Limits: Not specifically established; similar aliphatic hydrocarbons range: 1-7% (v/v)
Vapor Pressure: 2.2 mmHg at 25°C
Vapor Density: >1 (air = 1)
Relative Density: 0.76 g/cm3 at 20°C
Solubility: Negligible in water, soluble in organic solvents
Partition Coefficient (log Kow): Greater than 5, high potential for bioaccumulation
Auto-Ignition Temperature: Approx. 275°C
Decomposition Temperature: Not specifically determined
Viscosity: Low
Chemical Stability: Stable under normal temperatures and dry, closed conditions
Possibility of Hazardous Reactions: Strong oxidizers may cause violent reactions
Incompatible Materials: Oxidizing agents, strong acids, halogens
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, possibly low-molecular-weight hydrocarbons
Conditions to Avoid: Heat, sparks, open flames, static discharge, poorly-ventilated spaces
Likely Routes of Exposure: Inhalation, skin and eye contact, accidental ingestion
Acute Toxicity: Data limited; estimated oral LD50 in rats >5,000 mg/kg; inhalation LC50 not established
Chronic Effects: Prolonged or repeated contact can irritate skin, may cause dermatitis; repeated inhalation may affect central nervous system
Symptoms: Drowsiness, dizziness, headache, nausea; aspiration can cause lung injury
Carcinogenicity: Not classified as carcinogenic by IARC, NTP, OSHA
Sensitization: No evidence for skin or respiratory sensitization
Mutagenicity/Teratogenicity: Not established; available aliphatic hydrocarbon studies show minimal risk at low exposure
Toxicity to Aquatic Life: Estimated low to moderate toxicity for aquatic species, but potential for significant harm at high concentrations
Persistence and Degradability: Degrades slowly by atmospheric oxidation; may persist in soil and water
Bioaccumulative Potential: High due to nonpolar structure and high log Kow
Mobility in Soil: Low water solubility means slow migration but risk of surface film formation
Other Adverse Effects: Not readily biodegradable; avoid uncontrolled release into environment to limit contamination
Disposal Methods: Collect waste in labeled, sealable containers; use licensed chemical waste contractor for incineration in controlled facilities
Container Disposal: Triple rinse, puncture, or render unusable before landfill or recycling, according to local regulations
Precautions: Do not discharge to sewers or waterways; comply with local, state, federal guidelines on hazardous waste
UN Number: UN 3295
UN Shipping Name: Hydrocarbons, Liquid, n.o.s. (Pentamethylheptane)
Transport Hazard Class: 3 (Flammable liquids)
Packing Group: III (Less hazardous than PG I or II due to higher flash point)
Special Transport Precautions: Secure upright, away from ignition sources, away from oxidizing materials, ensure compliance with DOT, IATA, IMDG rules
Label Requirements: Flammable liquid placard; document any quantity over threshold for road, rail, air, or sea shipments
TSCA Status: Listed on the US Toxic Substances Control Act Inventory
SARA Title III: Not listed as Extremely Hazardous; not a known SARA Section 313 substance
OSHA: Considered hazardous due to flammability and aspiration risk
WHMIS: Class B2: Flammable liquid
REACH: Registered or pre-registered in the European Union
Other National Regulations: Subject to reporting and limits per specific country; maintain current registrations as regulations evolve
Workplace Labelling: Chemical name, hazard pictograms, and signal word must appear on all secondary containers in the workplace
