2-Methyl-1-buten-3-yne
2-Methyl-1-buten-3-yne (CAS: 78-80-8) is a volatile organic compound with the molecular formula C5H6 and a molecular weight of 66.10 g/mol. This alkyne, also known as isopropenylacetylene, is characterised by its terminal alkyne and vinyl group functionalities. It serves as a valuable building block in organic synthesis, particularly in reactions involving addition to the triple bond or modifications of the double bond. Its specific applications leverage its reactive nature in the creation of more complex molecules.
- IUPAC
- Isopropenylacetylene
- Synonyms
- Isopropenylacetylene
Organic Synthesis Intermediate
Utilised as a versatile building block in the construction of complex organic molecules. Its dual unsaturation allows for selective reactions, making it valuable in multi-step syntheses.
Specialty Chemical Manufacturing
Employed in the development and production of niche chemicals where its specific alkyne and alkene functionalities are required for tailored molecular architectures.
Research and Development
Frequently used in academic and industrial research laboratories to explore new synthetic pathways and to create novel compounds with potential applications in materials science or pharmaceuticals.
| Molecular weight | 66.10 |
|---|---|
| Linear formula | H2C=C(CH3)C≡CH |
| Assay | 99% |
| Boiling point | 32 °C(lit.) |
| Density | 0.695 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.416(lit.) |
| Vapour pressure | 8.96 psi (20 °C) |
| Melting point | −113 °C(lit.) |
| Storage temperature | 2-8°C |
Hazard statements
- H224Extremely flammable liquid and vapour
- H302Harmful if swallowed
- H304May be fatal if swallowed and enters airways
- H315Causes skin irritation
- H319Causes serious eye irritation
- H332Harmful if inhaled
- H335May cause respiratory irritation
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
- 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) |
|---|---|
| Flash point | -6 °C / 21.2 °F |
| Transport (UN / ADR) | UN 3295A 3 / PGI |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | F+,Xn |
| Risk statements (R) | 12-20/22-36/37/38-65 |
| Safety statements (S) | 16-26-36/37-62 |
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-Methyl-1-buten-3-yne used for?
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2-Methyl-1-buten-3-yne is primarily used as a building block in organic synthesis and in the development of specialty chemicals and novel compounds in research settings.
What are the CAS number and chemical formula for 2-Methyl-1-buten-3-yne?
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The CAS number for 2-Methyl-1-buten-3-yne is 78-80-8, and its chemical formula is C5H6, with a linear formula of H2C=C(CH3)C≡CH.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 2-Methyl-1-buten-3-yne with an assay of 99%. We do not represent this product as USP, BP, or EP grade.
How should 2-Methyl-1-buten-3-yne be handled safely?
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2-Methyl-1-buten-3-yne is extremely flammable (H224) and harmful if swallowed, inhaled, or absorbed through the skin (H302, H332). It can cause skin and eye irritation (H315, H319) and respiratory irritation (H335), and may be fatal if swallowed and enters airways (H304). Handle in a well-ventilated area with appropriate personal protective equipment, including eyeshields, gloves, and respiratory protection. Store at 2-8°C, away from ignition sources.
Is 2-Methyl-1-buten-3-yne shipped internationally?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including 2-Methyl-1-buten-3-yne.
How can I request a quote or sample?
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To request a quote or sample of 2-Methyl-1-buten-3-yne, please contact our sales team through the website or by phone, providing your specific requirements.
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