4-Phenyl-1-butene
4-Phenyl-1-butene (CAS: 768-56-9), with the molecular formula C10H12 and a molecular weight of 132.20 g/mol, is a valuable organic building block. This acyclic alkene features a terminal double bond, making it reactive in various chemical syntheses. It is primarily utilised in the development of more complex organic molecules and as an intermediate in the fine chemical and pharmaceutical industries.

Organic Synthesis Intermediate
Serves as a versatile intermediate in organic synthesis, particularly for introducing the 4-phenylbutyl moiety into target molecules. Its terminal alkene functionality allows for participation in addition reactions, polymerizations, and cross-coupling processes.
Polymerisation Studies
Can be investigated for its potential in polymerisation reactions, contributing to the synthesis of novel polymers with specific properties derived from its phenyl and alkene groups.
Fine Chemical Development
Utilised in the research and development of fine chemicals, where its unique structure can be leveraged to create specialty compounds for various industrial applications.
| Molecular weight | 132.20 |
|---|---|
| Linear formula | C6H5CH2CH2CH=CH2 |
| Assay | 99% |
| Boiling point | 175-177 °C(lit.) |
| Density | 0.88 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.507(lit.) |


Hazard statements
- H315Causes skin irritation
- H411Toxic to aquatic life with long-lasting effects
Precautionary statements
- P273Avoid release to the environment
| Protective equipment | Eyeshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 60 °C / 140 °F |
| Transport (UN / ADR) | UN 3295 3/PG 3 |
| Water hazard class (WGK, DE) | 2 |
| Hazard codes (EU) | Xi,N |
| Risk statements (R) | 38-51/53 |
| Safety statements (S) | 37-61 |
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 4-Phenyl-1-butene used for?
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4-Phenyl-1-butene is used as an intermediate in organic synthesis and in the development of fine chemicals and polymers. Its structure lends itself to the creation of more complex organic molecules.
What are the CAS number and formula for 4-Phenyl-1-butene?
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The CAS number for 4-Phenyl-1-butene is 768-56-9, and its molecular formula is C10H12.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-Phenyl-1-butene with an assay of 99%. We do not represent this product as USP, BP, or EP grade.
How should 4-Phenyl-1-butene be handled safely?
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4-Phenyl-1-butene is classified as a Warning, with hazards including skin irritation (H315) and toxicity to aquatic life with long-lasting effects (H411). Handle with appropriate personal protective equipment, including eyeshields and gloves, and avoid release into the environment (P273).
How is 4-Phenyl-1-butene packed, shipped, or exported?
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As a global supplier, Tech Serve Solutions ensures that 4-Phenyl-1-butene is packed and shipped in compliance with all relevant international transportation regulations for chemicals, including its UN 3295 classification.
How can I request a sample or quote for 4-Phenyl-1-butene?
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Please contact our sales team directly via our website or by phone to request a sample or a quotation for 4-Phenyl-1-butene.
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