Octadecane
- CAS NO.：593-45-3
- Empirical Formula: C18H38
- Molecular Weight: 254.49
- MDL number: MFCD00009007
- EINECS: 209-790-3
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-12-18 14:15:32
What is Octadecane?
Chemical properties
white crystals or powder
The Uses of Octadecane
n-octadecane is used as a solvent, a lubricant, transformer oil and an anti-corrosion agent. It is also used in paraffin and as a chemical intermediate in organic synthesis. It plays an important role in pheromones as a chemical messenger. N-Octadecane/ molecular sieve 5A composites find application as thermal storage material.
Definition
ChEBI: A straight-chain alkane carrying 18 carbon atoms.
Synthesis Reference(s)
The Journal of Organic Chemistry, 52, p. 472, 1987 DOI: 10.1021/jo00379a037
Tetrahedron Letters, 31, p. 5093, 1990 DOI: 10.1016/S0040-4039(00)97814-6
General Description
Colorless liquid.
Reactivity Profile
Saturated aliphatic hydrocarbons, such as Octadecane, may be incompatible with strong oxidizing agents like nitric acid. Charring of the hydrocarbon may occur followed by ignition of unreacted hydrocarbon and other nearby combustibles. In other settings, aliphatic saturated hydrocarbons are mostly unreactive. They are not affected by aqueous solutions of acids, alkalis, most oxidizing agents, and most reducing agents. When heated sufficiently or when ignited in the presence of air, oxygen or strong oxidizing agents, they burn exothermically to produce carbon dioxide and water.
Fire Hazard
Combustible.
Purification Methods
Crystallise it from acetone and distil it from sodium in a vacuum. [Beilstein 1 IV 553.]
Properties of Octadecane
| Melting point: | 28 °C |
| Boiling point: | 317 °C(lit.) |
| Density | 0.777 g/mL at 25 °C(lit.) |
| vapor density | 8.8 (vs air) |
| vapor pressure | 1 mm Hg ( 119 °C) |
| refractive index | 1.4390 |
| Flash point: | 330 °F |
| storage temp. | room temp |
| solubility | <0.0001g/l insoluble |
| form | Crystalline Mass/Melt |
| color | White |
| Specific Gravity | 0.7822 |
| Water Solubility | No rapid reaction with water. |
| BRN | 1740138 |
| Stability: | Stable. Combustible. Incompatible with strong oxidizing agents. |
| CAS DataBase Reference | 593-45-3(CAS DataBase Reference) |
| NIST Chemistry Reference | Octadecane(593-45-3) |
| EPA Substance Registry System | Octadecane (593-45-3) |
Safety information for Octadecane
| Signal word | Danger |
| Pictogram(s) |
 Health Hazard GHS08 |
| GHS Hazard Statements |
H304:Aspiration hazard |
| Precautionary Statement Codes |
P331:Do NOT induce vomiting. P301+P310:IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. P405:Store locked up. P501:Dispose of contents/container to..… |
Computed Descriptors for Octadecane
New Products
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