1-Chloro-2-octyne
1-Chloro-2-octyne (CAS: 51575-83-8), with the molecular formula C8H13Cl and a molecular weight of 144.64, is a halogenated hydrocarbon. This alkynyl compound serves as a versatile building block in organic synthesis. Its primary applications lie in chemical research and the development of new molecular structures, leveraging its reactive triple bond and terminal chloride functionality.

Organic Synthesis Intermediate
1-Chloro-2-octyne is employed as a key intermediate in the synthesis of more complex organic molecules. Its structure allows for various addition and substitution reactions.
Alkylation Reagent
The presence of the chloromethyl group makes it suitable for alkylation reactions, introducing the octynyl chain onto other molecules.
Research and Development
This compound is utilised in academic and industrial research laboratories for exploring novel synthetic pathways and creating new chemical entities.
| Molecular weight | 144.64 |
|---|---|
| Linear formula | CH3(CH2)4C≡CCH2Cl |
| Assay | 98% |
| Boiling point | 40-41 °C/0.5 mmHg(lit.) |
| Density | 0.931 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.46(lit.) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | Eyeshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 68 °C / 154.4 °F |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
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-Chloro-2-octyne used for?
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1-Chloro-2-octyne is primarily used as an intermediate in organic synthesis, for alkylation reactions, and in chemical research and development.
What are the CAS number and formula for 1-Chloro-2-octyne?
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The CAS number is 51575-83-8 and the linear formula is CH3(CH2)4C≡CCH2Cl.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 1-Chloro-2-octyne with a purity of 98%. This product is not represented as USP, BP, or EP grade.
How should 1-Chloro-2-octyne be handled safely?
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1-Chloro-2-octyne is a Warning substance (GHS07) and causes skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Appropriate personal protective equipment including eyeshields, gloves, and a suitable respirator should be used. Handle in a well-ventilated area.
How is 1-Chloro-2-octyne packaged and shipped?
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Tech Serve Solutions is a global supplier and exporter of chemicals. Please contact us for specific packaging and shipping details for 1-Chloro-2-octyne.
How can I request a quote or sample?
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To request a quote or sample of 1-Chloro-2-octyne, please visit the Tech Serve Solutions website or contact our sales team directly.
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