Skip to Content
Merck
CN

Key Documents

View All Documentation

M80903

α-Methylstyrene

99%, contains 15 ppm p-tert-butylcatechol as inhibitor

Synonym(s):

2-Phenylpropene, Isopropenylbenzene

Sign In to View Organizational & Contract Pricing.

Select a Size

Change View

About This Item

Linear Formula:
C6H5C(CH3)=CH2
CAS Number:
98-83-9
Molecular Weight:
118.18
UNSPSC Code:
12162002
NACRES:
NA.23
PubChem Substance ID:
24897221
EC Number:
202-705-0
Beilstein/REAXYS Number:
969405
MDL number:
MFCD00008859
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist

vapor density

4.1 (vs air)

Quality Segment

200

vapor pressure

2.1 mmHg ( 20 °C)

assay

99%

form

liquid

autoignition temp.

1065 °F

contains

15 ppm p-tert-butylcatechol as inhibitor

expl. lim.

6.1 %

refractive index

n20/D 1.538 (lit.)

bp

165-169 °C (lit.)

mp

−24 °C (lit.)

density

0.909 g/mL at 25 °C (lit.)

storage temp.

2-8°C

SMILES string

CC(=C)c1ccccc1

InChI

1S/C9H10/c1-8(2)9-6-4-3-5-7-9/h3-7H,1H2,2H3

InChI key

XYLMUPLGERFSHI-UHFFFAOYSA-N

General description

-Methylstyrene is an aromatic alkyl-substituted styrene monomer with a relatively high boiling point. It is widely used as a monomer to synthesize thermoplastic composite resins applied in adhesives, and coatings that require high-temperature stability. It can also participate as a precursor in regioselective and diastereoselective synthesis of natural products, pharmaceuticals, and other structurally diverse compounds.

Application

α-Methylstyrene can be used:

  • As a monomer to prepare “Phene” monomer for photopolymerizable dental resin composites to reduce their polymerization shrinkage. α-Methylstyrene has a low double bond concentration suitable for the preparation of low volumetric shrinkage and shrinkage stress resilient resin composites.
  • As a monomer to prepare poly(α-methylstyrene) polymer which can be used as an additive to fabricate organic thin film transistors. This polymer promotes the growth of uniformly aligned semiconductor crystals with significantly improved orientation.
  • As a precursor to synthesize 3,4-dihydropyrans with therapeutic potential.

Still not finding the right product?

Explore all of our products under α-Methylstyrene

signalword

Danger

Hazard Classifications

Aquatic Chronic 2 - Asp. Tox. 1 - Eye Irrit. 2 - Flam. Liq. 3 - Repr. 2 - Skin Sens. 1B - STOT SE 3

target_organs

Respiratory system

Storage Class

3 - Flammable liquids

wgk

WGK 2

flash_point_f

114.8 °F - closed cup

flash_point_c

46 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number

It looks like we've run into a problem, but you can still download Certificates of Analysis from our Documents section.

If you need assistance, please contact Customer Support

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library