alpha,p-Dimethylstyrene

Product Namealpha,p-Dimethylstyrene
CAS1195-32-0
MFC10H12
MW132.2
EINECS214-795-9
MOL File1195-32-0.mol

Chemical Properties

Melting point	−28 °C(lit.)
Boiling point	186-189 °C(lit.)
Density	0.904 g/mL at 25 °C(lit.)
refractive index	n20/D 1.535(lit.)
FEMA	3144 \| P,ALPHA-DIMETHYLSTYRENE
Flash point	144 °F
storage temp.	2-8°C
solubility	Chloroform (Slightly), Methanol (Slightly)
form	Oil
Specific Gravity	0.85
color	Colourless
Odor	at 0.10 % in dipropylene glycol. phenolic spicy styrene clove guaiacol
Odor Type	phenolic
biological source	synthetic
Water Solubility	Insoluble in water, soluble in alcohol, miscible with oils.
JECFA Number	1333
Stability	Light Sensitive
Major Application	flavors and fragrances
Cosmetics Ingredients Functions	PERFUMING
InChI	1S/C10H12/c1-8(2)10-6-4-9(3)5-7-10/h4-7H,1H2,2-3H3
InChIKey	MMSLOZQEMPDGPI-UHFFFAOYSA-N
SMILES	CC(=C)c1ccc(C)cc1
LogP	3.71
CAS DataBase Reference	1195-32-0(CAS DataBase Reference)
NIST Chemistry Reference	4-CH3C6H4C(CH3)CH2(1195-32-0)
EPA Substance Registry System	p,.alpha.-Dimethylstyrene (1195-32-0)

Safety Information

Hazard Codes	Xi
Risk Statements	36/37/38
Safety Statements	26-36-37/39
WGK Germany	2
TSCA	TSCA listed
HS Code	29029090
Storage Class	10 - Combustible liquids
Hazard Classifications	Eye Irrit. 2 Skin Irrit. 2 STOT SE 3

MSDS

Provider	Language
SigmaAldrich	English

Usage And Synthesis

Chemical Properties

p,α-Dimethyl styrene has a citrusy-lemon-like aroma.

Chemical Properties

Clear colorless to light yellow liquid

Occurrence

Reported found in pepper, coffee, anise and parsley

Uses

α, p-dimethylstyrene has been suggested for use in perfume compositions, mainly as a component in certain artificial essential oils. In Lemon fragrances for industrial masking purposes it may introduce lift, power and freshness.

Definition

ChEBI: P-Mentha-1,3,5,8-tetraene is a monocyclic hydrocarbon and a monoterpene.

Preparation

By passing a stream of p-cymene and water vapors over activated aluminum oxide at 730°C.

Taste threshold values

Taste characteristics at 2.5 ppm: spicy, balsamic, musty, and eugenol/guiacol-like with a nutty nuance.

Synthesis Reference(s)

Journal of the American Chemical Society, 118, p. 3970, 1996 DOI: 10.1021/ja9600486
The Journal of Organic Chemistry, 44, p. 3157, 1979 DOI: 10.1021/jo01332a014
Synthetic Communications, 19, p. 3353, 1989 DOI: 10.1080/00397918908052740

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.

alpha,p-Dimethylstyrene

Chemical Properties

Safety Information

MSDS

Usage And Synthesis

Preparation Products And Raw materials

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