2-Octyne
2-Octyne (CAS: 2809-67-8), with the linear formula CH3C≡C(CH2)4CH3 and a molecular weight of 110.20 g/mol, is an internal alkyne. This versatile organic building block is primarily utilised in chemical synthesis and research laboratories. Its reactive triple bond allows for a variety of transformations, making it a valuable intermediate in the construction of more complex organic molecules. Tech Serve Solutions supplies this compound with an assay of 97%.

Organic Synthesis Intermediate
2-Octyne serves as a crucial intermediate in organic synthesis. Its internal alkyne functionality enables participation in various addition reactions, cycloadditions, and coupling reactions for the development of novel organic compounds and materials.
Research and Development
This alkyne is employed in academic and industrial research settings for exploring new synthetic methodologies and creating complex molecular architectures. Its defined structure makes it a useful building block for probing reaction mechanisms and designing bespoke molecules.
Building Block for Specialty Chemicals
The compound can be incorporated into the synthesis of specialty chemicals, pharmaceuticals, and agrochemicals. Its chemical properties allow for precise functionalisation and elaboration into target molecules with specific properties.
| Molecular weight | 110.20 |
|---|---|
| Linear formula | CH3C≡C(CH2)4CH3 |
| Assay | 97% |
| Boiling point | 137 °C(lit.) |
| Density | 0.759 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.428(lit.) |


Hazard statements
- H225Highly flammable liquid and vapour
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 18 °C / 64.4 °F |
| Transport (UN / ADR) | UN 3295BE 3 / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | F,Xi |
| Risk statements (R) | 11-36/37/38 |
| Safety statements (S) | 16-26-36 |
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 2-Octyne used for?
+
2-Octyne is used as an intermediate in organic synthesis and in research and development laboratories for creating complex organic molecules and exploring new synthetic methodologies.
What is the CAS number and chemical formula for 2-Octyne?
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The CAS number for 2-Octyne is 2809-67-8, and its linear chemical formula is CH3C≡C(CH2)4CH3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 2-Octyne with an assay of 97%. This product is not represented as USP, BP, EP, or any other pharmacopoeia grade.
How should 2-Octyne be handled safely?
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2-Octyne is a flammable liquid and vapour (H225) and can cause skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). Always wear appropriate personal protective equipment, including eyeshields, gloves, and use in a well-ventilated area or with a suitable respirator, and keep away from heat, sparks, and open flames.
How is 2-Octyne packed, shipped, and exported?
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2-Octyne is shipped according to international regulations for hazardous materials, identified as UN 3295, Class 3, Packing Group II. Tech Serve Solutions handles export logistics with expertise.
How can I request a sample or quote for 2-Octyne?
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To request a sample or quote for 2-Octyne, please contact our sales team through the website or by calling us directly. We are happy to assist with your chemical requirements.
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