n-Octadecane
Also known as: 8K6, EINECS 209-790-3, MFCD00009007, O652_ALDRICH, Octadecan, Octadecane, Octadecane, n-, Oktadekan, n-Octadecan, octadecane
n-Octadecane (CAS 593-45-3) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C18H38 and a molecular weight of 254.494 g/mol. Key properties include a melting point of 28 °C, a boiling point of 316.3±5.0 °C at 760 mmHg, a density of 0.8±0.1 g/cm3 and a flash point of 165.6±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H304. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 593-45-3
- Jingsj CID
- J-36516-1
- Molecular Formula
- C18H38
- Molecular Weight
- 254.494 g/mol
- Category
- Aliphatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 28 °C |
|---|---|
| Boiling Point | 316.3±5.0 °C at 760 mmHg |
| Density | 0.8±0.1 g/cm3 |
| Flash Point | 165.6±0.0 °C |
| Exact Mass | 254.297348 |
| LogP | 10.32 |
| Additional Property | 8.8 (vs air) |
| Vapor Pressure | 0.0±0.3 mmHg at 25°C |
| Refractive Index | 1.438 |
GHS Safety & Compliance
- H304
Activity & Biological Data
| Additional Information | [1]. Hossein Tafrishi, et al. Investigating the effects of adding hybrid nanoparticles, graphene and boron nitride nanosheets, to octadecane on its thermal properties. (Paper) RSC Adv., 2020, 10, 14785-14793. |
|---|
Customs & Trade Information
| HS Code | 2901100000 |
|---|---|
| Summary | 2901100000 saturated acyclic hydrocarbons。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:2.0%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of n-Octadecane?
The CAS number of n-Octadecane is 593-45-3.
What are the molecular formula and molecular weight of n-Octadecane?
n-Octadecane has molecular formula C18H38 and molecular weight 254.494 g/mol.
Is n-Octadecane hazardous?
n-Octadecane has GHS signal word Danger and hazard statements H304.
What are the upstream and downstream products of n-Octadecane?
For n-Octadecane, Upstream Products: 1-Bromododecane, Stearic acid, Methyl stearate; Downstream Products: 1-Octadecanol, 1-Eicosanol, 1-Triacontanol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "n-Octadecane (CAS 593-45-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-36516-1 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.