1-Octene
1-Octene (CAS: 111-66-0), with the molecular formula C8H16 and a molecular weight of 112.21 g/mol, is a clear, colourless liquid. This acyclic alkene is a valuable building block in organic synthesis. It is primarily utilised as a co-monomer in the production of polymers such as polyethylene, enhancing material properties. It also finds application in the synthesis of surfactants, plasticizers, and various fine chemicals.

Polymerisation Co-monomer
1-Octene is widely employed as a co-monomer in the production of linear low-density polyethylene (LLDPE) and high-density polyethylene (HDPE). Its incorporation into the polymer chain introduces short-chain branching, improving flexibility, tear strength, and stress-crack resistance of the final plastic.
Organic Synthesis Intermediate
As a versatile alkene, 1-octene serves as a key intermediate in the synthesis of a range of organic compounds. It is used in the production of detergents, plasticizers, lubricants, and flavour and fragrance chemicals through various chemical transformations.
Fine Chemical Production
This compound acts as a foundational building block for more complex organic molecules. Its reactive double bond allows for various addition and functionalisation reactions essential in the development of specialty chemicals for diverse industrial applications.
| Molecular weight | 112.21 |
|---|---|
| Linear formula | CH3(CH2)5CH=CH2 |
| Assay | ≥97.0% (GC) |
| Boiling point | 122-123 °C(lit.) |
| Density | 0.715 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.408(lit.)n20/D 1.409(lit.)n20/D 1.409 |
| Vapour pressure | 36 mmHg (38 °C) |
| Melting point | −101 °C(lit.) |
| Vapour density | 3.9 (vs air) |
| Autoignition temp | 446 °F |



Hazard statements
- H225Highly flammable liquid and vapour
- H304May be fatal if swallowed and enters airways
- H410Very toxic to aquatic life with long-lasting effects
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
- P273Avoid release to the environment
- P301IF SWALLOWED
- P331Do NOT induce vomiting
- P501Dispose of contents and container per local regulations
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 10 °C / 50 °F |
| Transport (UN / ADR) | UN 3295 3/PG 2 |
| Water hazard class (WGK, DE) | 2 |
| Hazard codes (EU) | F,Xn,N |
| Risk statements (R) | 11-50/53-65-66 |
| Safety statements (S) | 16-61-62 |
| Supplemental hazards | Repeated exposure may cause skin dryness or cracking. |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 1-Octene used for?
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1-Octene is primarily used as a co-monomer in polymer production, particularly for polyethylene, to enhance material properties. It also serves as an intermediate in the synthesis of surfactants, plasticizers, lubricants, and various fine chemicals.
What are the CAS number and chemical formula for 1-Octene?
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The CAS number for 1-Octene is 111-66-0, and its chemical formula is CH3(CH2)5CH=CH2.
What grade and purity does Tech Serve Solutions supply for 1-Octene?
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Tech Serve Solutions supplies 1-Octene with an assay of ≥97.0% (GC). This is a technical grade material and is not represented as USP, BP, or EP.
How should 1-Octene be handled safely?
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1-Octene is a highly flammable liquid and vapour (H225) and may be fatal if swallowed and enters airways (H304). It is also toxic to aquatic life with long-lasting effects (H410). Handle in a well-ventilated area away from ignition sources, wear appropriate personal protective equipment including eyeshields and gloves, and avoid release into the environment.
How is 1-Octene typically packed, shipped, and exported?
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1-Octene is packed and shipped according to its hazard classification (UN 3295, Class 3, PG 2) to ensure safe transport. Tech Serve Solutions is experienced in global export procedures for chemical reagents.
How can I request a sample or a quote for 1-Octene?
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To request a sample or a quote for 1-Octene, please contact our sales team through the website or by calling our direct line. Please specify the quantity and your delivery location.
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