3-Ethynyltoluene
3-Ethynyltoluene (CAS: 766-82-5), with the molecular formula C9H8 and a molecular weight of 116.16 g/mol, is a valuable organic building block. This terminal alkyne features an ethynyl group attached to a toluene core, making it a versatile intermediate in organic synthesis. It is commonly employed in the construction of more complex molecular architectures for research and development purposes.
Organic Synthesis Intermediate
3-Ethynyltoluene serves as a key intermediate in the synthesis of various organic compounds. Its terminal alkyne functionality allows for participation in reactions such as Sonogashira couplings, click chemistry, and cycloadditions.
Building Block for Complex Molecules
The compound is utilised as a foundational building block for the construction of more intricate molecular structures. Its specific arrangement of an ethynyl group on a toluene ring offers unique reactivity pathways for medicinal chemistry and materials science research.
Research and Development
In R&D settings, 3-Ethynyltoluene is employed to explore novel synthetic routes and to create new chemical entities. Its availability as a well-defined reagent supports academic and industrial research efforts.
| Molecular weight | 116.16 |
|---|---|
| Linear formula | Ch3C6H4C≡CH |
| Assay | 97% |
| Boiling point | 170-175 °C(lit.) |
| Density | 0.900 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.5440(lit.) |
Hazard statements
- H226Flammable liquid and vapour
- H304May be fatal if swallowed and enters airways
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P301IF SWALLOWED
- P305IF IN EYES
- P331Do NOT induce vomiting
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 25 °C / 77 °F |
| Transport (UN / ADR) | UN 1993C 3 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 10-36/37/38-65 |
| 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 3-Ethynyltoluene used for?
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3-Ethynyltoluene is primarily used as an intermediate in organic synthesis and as a building block for creating complex molecules in research and development.
What are the CAS number and molecular formula for 3-Ethynyltoluene?
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The CAS number for 3-Ethynyltoluene is 766-82-5, and its molecular formula is C9H8.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3-Ethynyltoluene with an assay of 97%. We do not represent this product as USP, BP, EP or for nutraceutical or food grade use.
How should 3-Ethynyltoluene be handled safely?
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3-Ethynyltoluene is a flammable liquid and vapour (H226) that can cause skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). It may also be fatal if swallowed and enters airways (H304). Handle with appropriate personal protective equipment, including eyeshields, gloves, and ensure adequate ventilation. Use only in a well-ventilated area.
How is 3-Ethynyltoluene packed, shipped, and exported?
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3-Ethynyltoluene is shipped according to international regulations for hazardous materials, typically as a UN 1993C 3 / PGIII classification. TSS is experienced in global export procedures for chemicals.
How can I request a quote or sample of 3-Ethynyltoluene?
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To request a quote or sample, please contact our sales team through the TSS website or by phone, providing your specific requirements.
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