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Merck
CN

69168

α-Methylstyrene monomer

analytical standard

Synonym(s):

2-Phenylpropene, Isopropenylbenzene

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About This Item

Linear Formula:
C6H5C(CH3)=CH2
CAS Number:
98-83-9
Molecular Weight:
118.18
UNSPSC Code:
41116107
NACRES:
NA.24
PubChem Substance ID:
329761429
EC Number:
202-705-0
Beilstein/REAXYS Number:
969405
MDL number:
MFCD00008859

Key Documents

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InChI key

XYLMUPLGERFSHI-UHFFFAOYSA-N

InChI

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

SMILES string

CC(=C)c1ccccc1

grade

analytical standard

assay

≥99.5% (GC)

shelf life

limited shelf life, expiry date on the label

contains

~0.0025% 4-tert-butylcatechol as stabilizer

technique(s)

HPLC: suitable, gas chromatography (GC): suitable

refractive index

n20/D 1.539

bp

164-168 °C (lit.)

density

0.909 g/mL at 20 °C

application(s)

cleaning products
cosmetics
environmental
food and beverages
personal care
petroleum

format

neat

storage temp.

2-8°C

Quality Level

100

General description

This substance is listed on the positive list of the EU regulation 10/2011 for plastics intended to come into contact with food.

Application

α-Methylstyrene may be used as an analytical reference standard for the determination of the analyte in workplace ambient air by gas chromatography-mass spectrometric optimization method.
Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support.

Other Notes

Find a digital Reference Material for this product available on our online platform ChemisTwin® for NMR. You can use this digital equivalent on ChemisTwin® for your sample identity confirmation and compound quantification (with digital external standard). An NMR spectrum of this substance can be viewed and an online comparison against your sample can be performed with a few mouseclicks. Learn more here and start your free trial.

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

Regulatory Information

危险化学品
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Certificates of Analysis (COA)

Lot/Batch Number
BCCD9992
BCBZ4061
BCBS6960V
BCBQ7466V

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Gas chromatography- mass spectroscopy optimization by computer simulation, application to the analysis of 93 volatile organic compounds in workplace ambient air.
Randon J, et al.
Analytica Chimica Acta, 812, 258-264 (2014)
A N Ilialetdinov et al.
Mikrobiologiia, 52(4), 609-614 (1983-07-01)
Two bacterial strains assimilating alpha-methylsterene as a sole carbon and energy source were isolated from the sewage of an industrial plant producing synthetic rubber. The morphological, cultural and physiologo-biochemical properties of the strains were studied and their taxonomic position was
[Kallikrein-kinin system indices in neurocirculatory dystonia patients who work in synthetic rubber manufacture].
N I Al'berton et al.
Gigiena truda i professional'nye zabolevaniia, (12)(12), 23-26 (1981-12-01)
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
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
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