Molekula
9-Octadecene
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
9-Octadecene is an internal olefin with 18 carbon atoms, with its double bond at the C9 position (supplied here as the trans/E isomer), primarily used as a precursor for detergents and in lubricant formulations. It is also employed in the synthesis of specialty chemicals and as a reactive diluent in coatings. This chemical has a CAS number of 5557-31-3, with the molecular formula C18H36 and a molecular weight of 252.48. It is stored at ambient conditions and carries a signal word of "Danger" due to its hazardous properties. Molekula supplies 9-Octadecene from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
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Specifications
| Property | Value |
|---|---|
| Appearance | Colourless to pale yellow liquid |
| Identification | Conforms to Reference |
| Purity | ≥95.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 150 °C |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| SKU | 90037659 |
| CAS Number | 5557-31-3 |
| IUPAC Name | (E)-octadec-9-ene |
| Molecular Formula | C18H36 |
| Molecular Weight | 252.48 |
| Exact Mass | 252.2817 |
| SMILES | CCCCCCCC/C=C/CCCCCCCC |
| InChIKey | HSNQNPCNYIJJHT-ISLYRVAYSA-N |
| InChI | InChI=1S/C18H36/c1-3-5-7-9-11-13-15-17-18-16-14-12-10-8-6-4-2/h17-18H,3-16H2,1-2H3/b18-17+ |
| PubChem CID | 5364599 |
| REACH Code | Y110 |
| HTS Code | 2901291050 |
| Tariff Code | 2901290000 |
Safety & GHS
-
Serious Health Hazard
GHS08
Hazard statements
- H304 May be fatal if swallowed and enters airways
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P284 Wear respiratory protection
- P302+352 IF ON SKIN: Wash with soap and water
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- (9E)-9-Octadecene
- (9E)-octadec-9-ene
- (E)-9-Octadecene
- (E)-octadec-9-ene
- 9-Octadecene, (9E)-
- 9-Octadecene, (E)-
- octadec-9-ene
- trans-9-Octadecene
- trans-octadec-9-ene
Frequently asked questions
What is 9-Octadecene (CAS 5557-31-3) commonly used for?
9-Octadecene is primarily used as a precursor in the synthesis of oleochemicals, surfactants, and lubricants, as well as in polymer chemistry.
What is the molecular formula and molecular weight of 9-Octadecene?
The molecular formula is C₁₈H₃₆, and the molecular weight is 252.48 g/mol.
How should 9-Octadecene be stored?
Store in a tightly sealed container at ambient temperature, away from ignition sources, oxidizing agents, and direct sunlight.
What grades or purities of 9-Octadecene does Molekula supply?
Molekula supplies technical-grade 9-Octadecene with purity typically ≥95%. Custom specifications may be available upon request.
Can Molekula supply 9-Octadecene in bulk quantities?
Yes, Molekula can supply 9-Octadecene in bulk (drums, IBCs, or tanker loads) for industrial applications—contact us for specific volume requirements.
What documentation is provided with an order of 9-Octadecene?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and a commercial invoice. Additional documentation, such as a Packing List, can be provided upon request.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.