3-Methyl-1,2-butadiene
3-Methyl-1,2-butadiene (CAS: 598-25-4), also known as 1,1-Dimethylallene, is a volatile organic compound with the linear formula (CH3)2C=C=CH2 and a molecular weight of 68.12 g/mol. This allene is a valuable building block in organic synthesis, enabling the construction of more complex molecular architectures. Its unique allenic structure makes it a key intermediate for researchers and chemists engaged in fine chemical and pharmaceutical development.
- IUPAC
- 1,1-Dimethylallene
- Synonyms
- 1,1-Dimethylallene3-Methyl-1,2-butadiene
Organic Synthesis Intermediate
3-Methyl-1,2-butadiene serves as a fundamental building block in organic chemistry. Its reactive allenic system can participate in various cycloaddition and addition reactions, facilitating the synthesis of diverse cyclic and acyclic compounds.
Fine Chemical Development
This compound is utilised in the development of fine chemicals where precise molecular structures are paramount. Its application aids in creating novel materials and specialised chemical entities for advanced research.
Pharmaceutical Research
As a versatile intermediate, 3-Methyl-1,2-butadiene finds application in the early stages of pharmaceutical research. It enables the synthesis of potential drug candidates and complex molecular frameworks for medicinal chemistry exploration.
| Molecular weight | 68.12 |
|---|---|
| Linear formula | (CH3)2C=C=CH2 |
| Assay | 97% |
| Grade | purum |
| Boiling point | 40-41 °C(lit.) |
| Density | 0.694 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.419(lit.) |
| Melting point | −148 °C(lit.) |
| Vapour pressure | 6.87 psi (20 °C) |
| Storage temperature | 2-8°C |
Hazard statements
- H225Highly flammable liquid and vapour
- H304May be fatal if swallowed and enters airways
- 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
- 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 | -12 °C / 10.4 °F |
| Transport (UN / ADR) | UN 3295BE 3 / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | F,Xn |
| Risk statements (R) | 11-36/37/38-65 |
| Safety statements (S) | 16-26-36-62 |
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 3-Methyl-1,2-butadiene used for?
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3-Methyl-1,2-butadiene is primarily used as a building block in organic synthesis and for the development of fine chemicals and pharmaceutical intermediates.
What is the CAS number and formula for 3-Methyl-1,2-butadiene?
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The CAS number for 3-Methyl-1,2-butadiene is 598-25-4, and its linear formula is (CH3)2C=C=CH2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3-Methyl-1,2-butadiene at a purity of 97% (grade: purum). We do not represent this product as USP, BP, or EP grade.
How should 3-Methyl-1,2-butadiene be handled safely?
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3-Methyl-1,2-butadiene is highly flammable (H225) and can cause serious eye irritation (H319), skin irritation (H315), and respiratory irritation (H335). It is also harmful if swallowed and may cause lung damage (H304). Handle with appropriate personal protective equipment, including eyeshields and gloves, in a well-ventilated area, away from ignition sources.
How is 3-Methyl-1,2-butadiene packed, shipped, and exported?
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3-Methyl-1,2-butadiene is shipped according to strict regulations for flammable liquids. Tech Serve Solutions, as a global supplier and exporter, ensures compliance with all international shipping and handling requirements for hazardous materials like UN 3295 BE II.
How can I request a sample or quote for 3-Methyl-1,2-butadiene?
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To request a sample or a quote, please contact our sales department via the website or direct inquiry, providing your specific requirements and shipping details.
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