Skip to Content
Merck
All Photos(3)

Documents

M80903

Sigma-Aldrich

α-Methylstyrene

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

Synonym(s):

2-Phenylpropene, Isopropenylbenzene

Sign Into View Organizational & Contract Pricing
All Photos(3)

About This Item

Linear Formula:
C6H5C(CH3)=CH2
CAS Number:
98-83-9
Molecular Weight:
118.18
Beilstein:
969405
EC Number:
202-705-0
MDL number:
MFCD00008859
UNSPSC Code:
12162002
PubChem Substance ID:
24897221
NACRES:
NA.23

vapor density

4.1 (vs air)

Quality Level

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

Related Categories

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.

Signal Word

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 Code

3 - Flammable liquids

WGK

WGK 2

Flash Point(F)

114.8 °F - closed cup

Flash Point(C)

46 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

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

Visit the Document Library

Customers Also Viewed

Slide 1 of 6

1 of 6

4-Fluoro-α-methylstyrene AldrichCPR

Sigma-Aldrich

CDS001211

4-Fluoro-α-methylstyrene

Methylstyrene (mixture of 3- and 4-isomers) stabilised with 4-tert-butylpyrocatechol for synthesis

Sigma-Aldrich

8.22098

Methylstyrene

Methyl isobutyrate 99%

Sigma-Aldrich

148008

Methyl isobutyrate

Styrene ReagentPlus®, contains 4-tert-butylcatechol as stabilizer, ≥99%

Sigma-Aldrich

S4972

Styrene

Corning® vented caps for plastic Erlenmeyer cell culture flasks 48mm polypropylene cap, vented, for 2L Plastic Erlenmeyer Flask, sterile, 24/cs

CLS431339

Corning® vented caps for plastic Erlenmeyer cell culture flasks

2-Phenyl-1-propanol 97%

Sigma-Aldrich

179817

2-Phenyl-1-propanol

Ting Luo et al.
iScience, 23(11), 101717-101717 (2020-11-17)
Resin embedding is widely used to dissect the fine structure of bio-tissue with electron and optical microscopy. However, it is difficult to embed large-volume tissues with resin. Here, we modified the formula of LR-White resin to prevent the sample cracking
Monomer reactivity ratio and thermal performance of a-methyl styrene and glycidyl methacrylate copolymers
Deng JP and Yang WT
Chinese Journal of Polymer Science, 28(3), 323-330 (2010)
Toughening modification of (Acrylonitrile-styrene-acrylic copolymer)/(a-Methylstyrene-acrylonitrile copolymer) binary blend via using different impact modifiers."
Zhu W, et al.
Journal of Vinyl & Additive Technology (2014)
D B Dzhusupova et al.
Mikrobiologiia, 54(1), 136-140 (1985-01-01)
The work was aimed at studying alpha-methylstyrene oxidation by three active Pseudomonas cultures. P. acidovorans 9 oxidized alpha-methylstyrene only to acetophenone whereas two P. aeruginosa cultures assimilated the compound entirely. Analysis of the intermediate products and enzymes catalyzing the aromatic
National Toxicology Program technical report series, (543)(543), 1-210 (2008-08-08)
alpha-Methylstyrene is used in the production of acrylonitrile-butadiene-styrene resins and copolymers, which improve the impact and heat-resistant properties of polymers, specialty grades of plastics, rubber, and protective coatings. alpha-Methylstyrene also moderates polymerization rates and improves product clarity in coatings and
View All Related Papers

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service