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W314404

Sigma-Aldrich

p,α-Dimethylstyrene

≥98%, stabilized, FG

Synonym(s):

1-methyl-4-prop-1-en-2-ylbenzene, 2-p-tolylpropene, p-cymenene, para-iso propenyl toluene

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About This Item

Linear Formula:
CH3C6H4C(CH3)=CH2
CAS Number:
Molecular Weight:
132.20
FEMA Number:
3144
EC Number:
Council of Europe no.:
2260
MDL number:
UNSPSC Code:
12164502
PubChem Substance ID:
Flavis number:
1.010
NACRES:
NA.21

biological source

synthetic

Quality Level

grade

FG
Halal
Kosher

agency

meets purity specifications of JECFA

reg. compliance

EU Regulation 1334/2008 & 178/2002

assay

≥98%

contains

α-Tocopherol, synthetic as stabilizer

refractive index

n20/D 1.535 (lit.)

bp

186-189 °C (lit.)

mp

−28 °C (lit.)

density

0.904 g/mL at 25 °C (lit.)

application(s)

flavors and fragrances

documentation

see Safety & Documentation for available documents

food allergen

no known allergens

organoleptic

clove; spicy; phenolic

storage temp.

2-8°C

SMILES string

CC(=C)c1ccc(C)cc1

InChI

1S/C10H12/c1-8(2)10-6-4-9(3)5-7-10/h4-7H,1H2,2-3H3

InChI key

MMSLOZQEMPDGPI-UHFFFAOYSA-N

General description

p,α-Dimethylstyrene has been identified as one of the volatile flavor constituents in litchi, essential oils of distilled Mexican lime and parsley.

pictograms

Exclamation mark

signalword

Warning

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

10 - Combustible liquids

wgk_germany

WGK 2

flash_point_f

143.6 °F - closed cup

flash_point_c

62 °C - closed cup

ppe

Eyeshields, Gloves, type ABEK (EN14387) respirator filter


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The mechanism of formation of p, ??dimethylstyrene in the essential oil of distilled lime (Citrus aurantifolia).
Loori JJ & Cove AR
Journal of Food Science, 29(5), 576-582 (1964)
The effect of sowing date and growth stage on the essential oil composition of three types of parsley (Petroselinum crispum).
Petropoulos SA, et al.
Journal of the Science of Food and Agriculture, 84(12), 1606-1610 (2004)
Comparison of volatile profiles of nine litchi (Litchi chinensis Sonn.) cultivars from Southern China.
Wu Y, et al.
Journal of Agricultural and Food Chemistry, 57(20), 9676-9681 (2009)
Jiatong Wang et al.
Molecules (Basel, Switzerland), 25(18) (2020-09-18)
Citrus blend black teas are popular worldwide, due to its unique flavor and remarkable health benefits. However, the aroma characteristics, aroma profiles and key odorants of it remain to be distinguished and cognized. In this study, the aroma profiles of

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