1-Dodecyne
1-Dodecyne (CAS: 765-03-7), with the molecular formula CH3(CH2)9C≡CH and a molar mass of 166.30 g/mol, is a terminal alkyne. This organic compound serves as a valuable building block in chemical synthesis, particularly in the preparation of complex organic molecules and materials. Its primary application lies in organic synthesis and research laboratories requiring specific alkyne functionalities for further chemical transformations.

Synthesis of Nanomaterials
1-Dodecyne has been utilised in the synthesis of stable ruthenium nanoparticles. This application highlights its role in advanced materials science and nanotechnology research.
Organic Synthesis Reagent
As a terminal alkyne, 1-Dodecyne is a versatile reagent in organic synthesis. It can participate in various addition reactions, coupling reactions, and cycloadditions, enabling the construction of diverse organic structures.
Chemical Research and Development
This compound is employed in research and development settings for exploring new synthetic pathways and creating novel organic compounds. Its defined chemical structure makes it suitable for precise molecular design.
| Molecular weight | 166.30 |
|---|---|
| Linear formula | CH3(CH2)9C≡CH |
| Assay | 98% |
| Boiling point | 215 °C(lit.) |
| Density | 0.778 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.434(lit.) |
| Application | 1-Dodecyne was used in the synthesis of stable ruthenium nanoparticles1. |
| Melting point | −19 °C(lit.) |

Hazard statements
- H318Causes serious eye damage
- H413May cause long-lasting harmful effects to aquatic life
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
| Protective equipment | Eyeshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 79 °C / 174.2 °F |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 41 |
| Safety statements (S) | 26-39 |
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-Dodecyne used for?
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1-Dodecyne is used as a building block in chemical synthesis, notably in the preparation of ruthenium nanoparticles and for general organic synthesis applications in research and development.
What is the CAS number and molecular formula for 1-Dodecyne?
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The CAS number for 1-Dodecyne is 765-03-7, and its molecular formula is CH3(CH2)9C≡CH.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 1-Dodecyne with an assay of 98%. This product is supplied for research and technical use; it is not represented as USP, BP, EP, or any other pharmacopoeial grade.
How should 1-Dodecyne be handled safely?
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1-Dodecyne is classified as Danger, with hazard statements H318 (causes serious eye damage) and H413 (may cause long lasting harmful effects to aquatic life). Appropriate personal protective equipment, including eyeshields, gloves, and suitable respiratory protection, should be used. Ensure adequate ventilation and avoid release into the environment.
Can 1-Dodecyne be safely shipped and exported?
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Yes, Tech Serve Solutions is an experienced global supplier and exporter of fine chemicals, including 1-Dodecyne, adhering to all relevant shipping and export regulations.
How can I request a sample or quote for 1-Dodecyne?
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To request a sample or a quote for 1-Dodecyne, please contact the Tech Serve Solutions sales team through our website or direct contact details.
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