• Phenylethene


  • CasNo:100-42-5
  • Purity:99%

Product Details;

CasNo: 100-42-5

Molecular Formula: C8H8

Appearance: colorless, oily liquid with aroma odour

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  • Molecular Formula:C8H8
  • Molecular Weight:104.152
  • Appearance/Colour:colorless, oily liquid with aroma odour 
  • Vapor Pressure:6.21mmHg at 25°C 
  • Melting Point:-31 °C 
  • Refractive Index:n20/D 1.546(lit.)  
  • Boiling Point:145.159 °C at 760 mmHg 
  • Flash Point:31.105 °C 
  • PSA:0.00000 
  • Density:0.903 g/cm3 
  • LogP:2.32960 
  • IDLH: 700 ppmSee: 100425  

Phenylethene(Cas 100-42-5) Usage

General Description

Phenylethene, also known as Styrene or vinyl benzene, is an unsaturated hydrocarbon that is primarily used as a monomer in producing polystyrene plastics and resins. It is a colorless liquid with a unique sweet smell and has the chemical formula C8H8. It is very reactive due to the carbon-carbon double bond and is also flammable. Prolonged exposure to phenylethene is hazardous and can cause harmful effects on the skin, eyes, and respiratory system. It is also identified as a possible human carcinogen in its gas or vapor state by several health organizations due to its ability to cause cancer.

Who Evaluation

Evaluation year: 1984


inhalation, skin absorption, ingestion, skin and/or eye contact


(See procedures) Eye:Irrigate immediately Skin:Water flush Breathing:Respiratory support Swallow:Medical attention immediately


100-42-5 Relevant articles

Optically Active Phenylethene Dimers Based on Planar Chiral Tetrasubstituted [2.2]Paracyclophane

Dr. Masayuki Gon, Prof. Yasuhiro Morisaki, Prof. Yoshiki Chujo

, Chemistry–A European Journal,Volume23, Issue26 May 5, 2017 Pages 6323-6329

Optically active phenylethene dimers based on a planar chiral 4,7,12,15-tetrasubstituted [2.2]paracyclophane were synthesized. We succeeded in controlling the molecular motion by binding luminophores in close proximity with the [2.2]paracyclophane scaffold.

Highly emissive dimethylamino naphthalenyl phenylethene derivatives for visualization of latent fingerprints and imaging of lysosomes

Shaojin Chen a, Ke Jia a, Ying Fang a, Chunfang Liu a, Chunming Yuan b, Jing Liu a, Kun-Peng Wang a, Zhi-Qiang Hu a

, Dyes and Pigments Volume 205, September 2022, 110534

In this work, two organic fluorescent molecules (DANPAN and DANBEN) were developed based on dimethylamino naphthalenyl phenylethene structure. These two molecules have quite different fluorescent properties, and the position of cyano group significantly affects the optical properties of these dimethylamino naphthalenyl phenylethene derivatives.

Synthesis, aggregation-induced emission and thermally activated delayed fluorescence properties of two new compounds based on phenylethene, carbazole and 9,9′,10,10′-tetraoxidethianthrene

Xiuqing Dong a, Shujuan Wang a, Chen Gui c, Heping Shi a b, Fangqin Cheng a, Ben Zhong Tang c

, Tetrahedron Volume 74, Issue 4, 25 January 2018, Pages 497-505

In the text, two luminescent materials ECPPTT and ECDPTT, have been designed and synthesized by integrating tetraphenyl/triphenyl-ethene(TPE/TrPE), carbazole group and thianthrene-9,9,10,10-tetraoxide unit. ECPPTT and ECDPTT possess obvious AIE and TADF capabilities, and show good thermal stability in their thin film of 240 °C and 262 °C, respectively.