Home › Chemicals › Isooctane CAS 540-84-1: Isooctane (C8H18) Identity CAS Number 540-84-1 Molecular Formula C8H18 IUPAC Name 2,2,4-trimethylpentane Molecular Weight 114.23 g/mol SMILES CC(C)CC(C)(C)CSynonyms 2,2,4-trimethylpentane, isooctane, TMP, octane isomer
2D Structure
Physical Properties Density 0.692 g/mL at 25°C Boiling Point 99.0°C Melting Point -107.0°C Flash Point -12.0°C Vapor Pressure 5.5 kPa at 20°C Refractive Index nD = 1.391 Dielectric Constant ε = 1.94
Safety & GHS Classification Flammable Irritant Health Hazard GHS09
H225: Highly flammable liquid and vapor H304: May be fatal if swallowed and enters airways H315: Causes skin irritation H336: May cause drowsiness or dizziness H410: Very toxic to aquatic life with long lasting effects Storage: Store in cool, well-ventilated area. Extremely flammable — keep away from all ignition sources. Ground/bond containers. Use explosion-proof equipment.
Material Compatibility Matrix Plastics Material Rating PTFE Excellent PVC Poor PE Good PP Good PEEK Excellent PVDF Good
Rubbers Material Rating Viton Severe Effect NBR Severe Effect EPDM Severe Effect Silicone Poor FKM Severe Effect
Metals Material Rating Stainless 316 Excellent Aluminum Excellent Copper Excellent Brass Excellent
Applications Gasoline octane rating standard (100 octane) Laboratory non-polar solvent HPLC eluent Paint and coating solvent Adhesive and sealant solvent Fuel additive research External References: PubChem
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