Octadecane
CAS 593-45-3
EC 209-790-3
Formula C18H38
MW 254.49 g/mol
Oils, Fats & Waxes Lubricants & MetalworkingPersonal Care & CosmeticsTextile, Leather & PaperFood & Nutrition LubricationEmulsification & DispersionSurface Modification & Wetting
Description
Octadecane (CAS 593-45-3) is a straight-chain saturated hydrocarbon with the molecular formula C18H38, commercially known under trade names including TS 8, RT 26, PCM 18, and NSC 4201. It carries no assigned E-code. It belongs to the alkane family and is classified within the surfactants category for industrial supply purposes.
In personal care formulations, octadecane functions as an emulsion stabilizer and hair conditioner by reinforcing the lipid layer at oil-water interfaces, improving texture and film cohesion. In lubricant and metalworking applications, its long carbon chain provides a structured boundary layer that reduces friction between metal surfaces under moderate load conditions.
Octadecane is supplied in crystalline mass and melt grades, with availability conforming to REACH registration requirements under HS code 29011000. Procurement quantities are typically offered in technical and cosmetic-grade specifications. Buyers should confirm purity certificates and SDS documentation prior to order placement.
In personal care formulations, octadecane functions as an emulsion stabilizer and hair conditioner by reinforcing the lipid layer at oil-water interfaces, improving texture and film cohesion. In lubricant and metalworking applications, its long carbon chain provides a structured boundary layer that reduces friction between metal surfaces under moderate load conditions.
Octadecane is supplied in crystalline mass and melt grades, with availability conforming to REACH registration requirements under HS code 29011000. Procurement quantities are typically offered in technical and cosmetic-grade specifications. Buyers should confirm purity certificates and SDS documentation prior to order placement.
Physical Properties
| 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℃ |
Safety & Handling (Learn More)
Danger GHS08
H
H304
P
P331P405P501P301+P316
Trade & Regulatory
| HS Code | 29011000 |
| Storage Class | 10 - Combustible liquids |
| WGK (Germany) | 3 |
Other Names
n-octadecaneTS 8RT 26PCM 18OctadecanALKANE C18C18-n-Alkane
Related Products
Raw Materials
Need a chemical? Get a quote within 24 hours.