Oils, Fats & Waxes
REACH
Octadecane
CAS Number
593-45-3
EC Number
209-790-3
What is Octadecane?
Octadecane (CAS 593-45-3) is a straight-chain saturated hydrocarbon sourced from petroleum fractions; used commercially as a functional wax component, lubricant base, and phase-change material.
Where is Octadecane used?
- Personal care and cosmetics: texture modifier and emollient carrier in creams, balms, and stick formulations with a controlled melt profile
- Lubricants and metalworking: base component in release agents and process oils
- Textile and leather finishing: surface modification treatments that improve slip, hand feel, and water resistance
- Food and packaging: phase-change material in thermal management and reference compound for analytical calibration and testing
- Its well-defined melting point makes it a reference standard and functional ingredient.
Commercial specifications
- Purity grades typically range from 95% technical to 99%+ high-purity research and analytical grades
- Bulk quantities and smaller units for formulation development
Other Names (Synonyms)
n-octadecane|N102P6HAIU|RefChem:6081|octadecane, 14C-labeled cpd|C18-n-Alkane|Cactus Normal Paraffin TS 8
What are the physical properties of Octadecane?
Melting Point 28.2 °C
Boiling Point 315.84 °C
Density 0.772 g/cm³
Flash Point 330 °F
Appearance white crystals or powder
Color White
Form Crystalline Mass/Melt
Water Solubility No rapid reaction with water.
Vapor Pressure 1 mm Hg ( 119 °C)
Refractive Index 1.4390
Log P 9.32 at 20℃
How is Octadecane classified and handled safely? Learn More
Danger
GHS08· Health Hazard
Hazard Statements
H304 May be fatal if swallowed and enters airways
Precautionary Statements
P331 Do NOT induce vomiting.
P405 Store locked up.
P501 Dispose of contents/container in accordance with local regulations.
P301+P316 Get emergency medical help immediately.
Which trade and regulatory codes apply to Octadecane?
HS Code 29011000
Storage Class 10 - Combustible liquids
WGK (Germany) 3