Trimethylpentane HPLC Grade Extra Pure

1. Basic Identification Attributes

Chemical Name: 2,2,4-Trimethylpentane
CAS Number: 540-84-1
HS Code: 2901.10.90
Molecular Formula: C₈H₁₈
Synonyms: Isooctane, Iso-octane, TMP, 2,2,4-Trimethylpentane

2. Physical & Chemical Properties

Physical State: Liquid
Color & Odor: Clear, colorless with mild hydrocarbon odor
Boiling Point: ~99.3 °C
Melting Point: −107.4 °C
Density/Specific Gravity: ~0.692 g/cm³ at 20 °C
Solubility: Insoluble in water, miscible with most organic solvents
Vapor Pressure: ~52 mmHg at 20 °C
Flash Point: −12 °C (closed cup)
Autoignition Temperature: 415 °C
Viscosity: Very low (mobile liquid)
Refractive Index: ~1.391 at 20 °C

3. Safety & Hazard Attributes

Hazard Class (GHS Classification):
– Flammable liquid (Category 2)
– Skin and eye irritant (mild)
– May cause drowsiness or dizziness (Category 3)
NFPA Ratings:
– Health: 1
– Flammability: 3
– Reactivity: 0
Exposure Limits:
– OSHA PEL: 500 ppm
– ACGIH TLV: 300 ppm
Reactivity:
– Stable under normal conditions
– Reacts with strong oxidizing agents

4. Storage & Handling Attributes

Storage Conditions:
– Store in tightly sealed containers in a cool, flammable chemical storage area
– Keep away from ignition sources and electrostatic discharge
Incompatible Materials:
– Strong oxidizers, acids, halogens
Container Type:
– Use approved containers for flammable solvents (metal or solvent-safe HDPE)
Shelf Life & Expiration Date:
– Typically stable for 2–3 years under recommended storage conditions
Special Handling Requirements:
– Use in well-ventilated areas or fume hoods
– Avoid inhalation of vapors
– Ground equipment during transfer

5. Regulatory & Compliance Attributes

Regulatory Status:
– Listed under REACH, TSCA, and OSHA
– Controlled as a flammable volatile organic compound
Transportation Restrictions:
– UN Number: UN1262
– Shipping Name: Isooctane
– Hazard Class: 3 (Flammable Liquid)
– Packing Group: II
Waste Disposal Method:
– Dispose of as hazardous waste according to local regulations

6. Environmental & Health Impact

Ecotoxicity:
– Harmful to aquatic organisms
Persistence in Environment:
– Volatile, degrades in air under photochemical conditions
Carcinogenicity/Mutagenicity:
– Not classified as carcinogenic
Biodegradability:
– Biodegradable under aerobic conditions