Octadecane
- CAS No.
- 593-45-3
- Chemical Name:
- Octadecane
- Synonyms
- N-OCTADECANE;Octadecan;OCTADECANE;ALKANE C18;Octadecane>Is octadecane;n-Octadecane 0;#nn-Octadecane;OCTADECANE 99+%;n-Octadecane,99%
- CBNumber:
- CB9853920
- Molecular Formula:
- C18H38
- Molecular Weight:
- 254.49
- MDL Number:
- MFCD00009007
- MOL File:
- 593-45-3.mol
- MSDS File:
- SDS
| Product description | Number | Pack Size | Price |
| Octadecane analytical standard | 74691 | 1g | $27.5 |
| Octadecane certified reference material, TraceCERT?, Manufactured by: Sigma-Aldrich Production GmbH, Switzerland | CRM78294 | 100MG | $117 |
| Octadecane analytical standard | 74691 | 5g | $76.7 |
| Octadecane >98.0%(GC) | O0003 | 25g | $22 |
| Octadecane >98.0%(GC) | O0003 | 250g | $123 |
| More product size | |||
| 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 |
| Viscosity | 4.03mm2/s |
| Water Solubility | No rapid reaction with water. |
| Thermal Conductivity | 0.138 W/(m·K) at 25 ℃ |
| BRN | 1740138 |
| Henry's Law Constant | 1.6×10-6 mol/(m3Pa) at 25℃, Eastcott et al. (1988) |
| Stability | Stable. Combustible. Incompatible with strong oxidizing agents. |
| Major Application | petroleum |
| Cosmetics Ingredients Functions |
SOLVENT PERFUMING SKIN CONDITIONING SKIN CONDITIONING - EMOLLIENT |
| InChI | 1S/C18H38/c1-3-5-7-9-11-13-15-17-18-16-14-12-10-8-6-4-2/h3-18H2,1-2H3 |
| InChIKey | RZJRJXONCZWCBN-UHFFFAOYSA-N |
| SMILES | CCCCCCCCCCCCCCCCCC |
| LogP | 9.32 at 20℃ |
| CAS DataBase Reference | 593-45-3(CAS DataBase Reference) |
| EWG's Food Scores | 1 |
| FDA UNII | N102P6HAIU |
| NIST Chemistry Reference | Octadecane(593-45-3) |
| EPA Substance Registry System | Octadecane (593-45-3) |
| UNSPSC Code | 41116107 |
| NACRES | NA.24 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS08 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H304 | |||||||||
| Precautionary statements | P301+P310-P331-P405-P501 | |||||||||
| PPE | dust mask type N95 (US), Eyeshields, Gloves | |||||||||
| Hazard Codes | Xi,Xn | |||||||||
| Risk Statements | 36/37/38-66-65 | |||||||||
| Safety Statements | 26-36-62-24-23 | |||||||||
| WGK Germany | 3 | |||||||||
| Autoignition Temperature | 455 °F | |||||||||
| TSCA | TSCA listed | |||||||||
| HS Code | 29011000 | |||||||||
| Storage Class | 10 - Combustible liquids | |||||||||
| Hazard Classifications | Asp. Tox. 1 | |||||||||
| Hazardous Substances Data | 593-45-3(Hazardous Substances Data) | |||||||||
| NFPA 704 |
|
Octadecane price More Price(28)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 74691 | Octadecane analytical standard | 593-45-3 | 1g | $27.5 | 2026-03-19 | Buy |
| Sigma-Aldrich | CRM78294 | Octadecane certified reference material, TraceCERT?, Manufactured by: Sigma-Aldrich Production GmbH, Switzerland | 593-45-3 | 100MG | $117 | 2026-03-19 | Buy |
| Sigma-Aldrich | 74691 | Octadecane analytical standard | 593-45-3 | 5g | $76.7 | 2026-03-19 | Buy |
| TCI Chemical | O0003 | Octadecane >98.0%(GC) | 593-45-3 | 25g | $22 | 2026-03-19 | Buy |
| TCI Chemical | O0003 | Octadecane >98.0%(GC) | 593-45-3 | 250g | $123 | 2026-03-19 | Buy |
Octadecane Chemical Properties,Uses,Production
Description
Octadecane is an alkane hydrocarbon that has the molecular formula CH3(CH2)16CH3. It is a straight-chain alkane that carries 18 carbon atoms. Octadecane has a role as a plant metabolite and a bacterial metabolite. It is found in alcoholic beverages, hop oil, aband other plant resources. Octadecane is a colorless liquid that has a fuel-like smell. It is soluble in water, slightly soluble in ethanol and soluble. It is also soluble in acetone, ethyl ether, chloroform, petroleum, ether, and coal tar hydrocarbons.
Chemical Properties
white crystals or powder
Uses
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 and Applications
Octadecane (n-Octadecane) is part of the paraffin family; its chemical formula is C18H38, and it is a solid at room temperature. Its melting point lies between 28 and 30 °C, its heat capacity is 2.22 J/K·g, and its viscosity is 4.21 mPa·s (20 °C). During the phase transition, the thermal conductivity changes from 0.198 W/m·K (solid) to 0.222 W/m·K (liquid). Octadecane can be used as a phase-change material (PCM) to prepare novel phase-change composites suitable for building cooling applications. Recycled aluminium was added to these composites at concentrations of 7% and 7.5% (by volume) as a thermal conductivity enhancer to prevent sinking during the molten phase and to improve thermal conductivity. Furthermore, research has shown that, compared to octadecane, the addition of aluminium shavings can increase the thermal conductivity of the composite by 100% (octadecane-short aluminium) and 600% (octadecane-long aluminium), whereas the mass increase remains relatively low[1].
References
[1] Nicoleta Cobîrzan. (2025). Properties of n-Octadecane PCM Composite with Recycled Aluminum as a Thermal Enhancer. Materials, 18 24. https://doi.org/10.3390/ma18245638
Octadecane Preparation Products And Raw materials
Raw materials
1of2
Preparation Products
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| BEYOND INDUSTRIES (CHINA) LIMITED | +86-21-52699951; +8613917686115 | sales@beyondindustriesgroup.com | China | 699 | 58 |
| SEDIN Pionerr Technology & Industry Development limited | +86-0351-+undefined-0351-2329758 +8615954642983 | chinapcmprovider@gmail.com | China | 14 | 58 |
| Hebei Chuanghai Biotechnology Co,.LTD | +86-86-13131129325 +8613131129325 | sales1@chuanghaibio.com | China | 5235 | 58 |
| Henan Fengda Chemical Co., Ltd | +86-371-86557731 +86-13613820652 | info@fdachem.com | China | 20124 | 58 |
| airuikechemical co., ltd. | +86-18353166132 | sales02@airuikechemical.com | China | 983 | 58 |
| Hebei Zhuanglai Chemical Trading Co.,Ltd | +8613343047651 | admin@zlchemi.com | China | 3692 | 58 |
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | info@tianfuchem.com | China | 21592 | 55 |
| career henan chemical co | +86-0371-86658258 +8613203830695 | sales@coreychem.com | China | 29822 | 58 |
| TargetMol Chemicals Inc. | +1-781-999-5354; +17819995354 | marketing@targetmol.com | United States | 32467 | 58 |
| Hefei TNJ Chemical Industry Co.,Ltd. | +86-0551-65418671 +8618949823763 | sales@tnjchem.com | China | 34563 | 58 |
View Lastest Price from Octadecane manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
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2026-04-17 | Octadecane
593-45-3
|
0.99 | RongNa Biotechnology Co.,Ltd | ||||
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2026-04-17 | Octadecane
593-45-3
|
US $31.00 / g | 99.00% | 10g | TargetMol Chemicals Inc. | ||
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2026-04-13 | Octadecane
593-45-3
|
US $0.00 / ton | 1ton | 99% | 200 | SEDIN Pionerr Technology & Industry Development limited |
-
- Octadecane
593-45-3
- 0.99
- RongNa Biotechnology Co.,Ltd
-
- Octadecane
593-45-3
- US $31.00 / g
- 99.00%
- TargetMol Chemicals Inc.
-
- Octadecane
593-45-3
- US $0.00 / ton
- 99%
- SEDIN Pionerr Technology & Industry Development limited
