trans-1-Phenyl-1-propene
trans-1-Phenyl-1-propene (CAS 873-66-5) is an organic compound with the linear formula C₆H₅CH=CHCH₃ and a molecular weight of 118.18 g/mol. This alkene serves as a valuable building block in organic synthesis. Its primary applications lie in chemical research and development, contributing to the construction of more complex molecular architectures. It is supplied by Tech Serve Solutions with an assay of ≥98.0% via Gas Chromatography.
- IUPAC
- trans-Propenylbenzene
- Synonyms
- trans-Propenylbenzene(E)-1-Phenyl-1-propene(E)-Prop-1-enylbenzene

Organic Synthesis
trans-1-Phenyl-1-propene is utilised as a precursor and intermediate in the synthesis of various organic compounds. Its alkene functionality allows for diverse chemical transformations, making it a key component in multi-step synthetic routes.
Chemical Research
This compound is employed in academic and industrial research laboratories for exploring new synthetic methodologies and developing novel chemical entities. Its specific structure facilitates studies in stereochemistry and reaction mechanisms.
Building Block
As an organic building block, trans-1-Phenyl-1-propene provides a phenyl group and a propenyl chain, enabling chemists to introduce these structural motifs into target molecules efficiently.
| Molecular weight | 118.18 |
|---|---|
| Linear formula | C6H5CH=CHCH3 |
| Assay | ≥98.0% (GC) |
| Boiling point | 175 °C(lit.) |
| Density | 0.911 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.550(lit.)n20/D 1.550 |
| Storage temperature | 2-8°C |
| Contains / stabiliser | ~0.002% 3,5-di-tert-butylcatechol as stabilizer |




Hazard statements
- H226Flammable liquid and vapour
- H304May be fatal if swallowed and enters airways
- H315Causes skin irritation
- H318Causes serious eye damage
- H334May cause allergy or asthma symptoms if inhaled
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P301IF SWALLOWED
- P305IF IN EYES
- P331Do NOT induce vomiting
- P342
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 52 °C / 125.6 °F |
| Transport (UN / ADR) | UN 2618 3 / PGIII |
| Water hazard class (WGK, DE) | 2 |
| Hazard codes (EU) | Xn,N |
| Risk statements (R) | 10-37/38-41-43-51/53-65 |
| Safety statements (S) | 16-26-36/37/39-61-62 |
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 trans-1-Phenyl-1-propene used for?
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trans-1-Phenyl-1-propene is used as a building block in organic synthesis and for chemical research. It facilitates the introduction of phenyl and propenyl groups into more complex molecules.
What is the CAS number and formula for trans-1-Phenyl-1-propene?
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The CAS number for trans-1-Phenyl-1-propene is 873-66-5. Its linear formula is C₆H₅CH=CHCH₃.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies trans-1-Phenyl-1-propene with an assay of ≥98.0% determined by Gas Chromatography (GC). This product is not represented as USP, BP, or EP grade.
How should trans-1-Phenyl-1-propene be handled safely?
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trans-1-Phenyl-1-propene is a flammable liquid and vapour (H226) that can cause severe eye damage (H318) and skin irritation (H315). It may also cause respiratory irritation (H335) and allergic skin reaction (H317). Aspiration into the lungs may be fatal (H304) and it may cause damage to the respiratory tract if inhaled (H334). Always use appropriate personal protective equipment, including eyeshields, gloves, and a suitable respirator, and handle in a well-ventilated area.
How is trans-1-Phenyl-1-propene shipped and exported?
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Tech Serve Solutions, a specialist global supplier and exporter, ships and exports trans-1-Phenyl-1-propene in compliance with all relevant international regulations for hazardous materials. It is classified under UN 2618, Hazard Class 3, Packing Group III.
How can I request a sample or quote for trans-1-Phenyl-1-propene?
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To request a sample or a quote for trans-1-Phenyl-1-propene, please contact the Tech Serve Solutions sales department through our website or by phone, providing your contact details and the quantity required.
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