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Styrene

CAS
EC
Material type
synthetic aroma chemical
Canonical source
arctander
How it behaves

Olfactory profile

Family
sweet
Note tendency
Top
Descriptors
floralbalsamicsweet

Styrene has a sweet, penetrating, almost balsamic-floral odor with a distinctly solventy, plasticky edge reminiscent of polystyrene foam. It's sharp and slightly rubbery on first sniff, with faint hyacinth-like floral facets underneath.AI · claude-opus-4-7

Intensity
7 / 10
Tenacity
2 / 10
Volatility
9 / 10
Reverse-composition

Contained in

Other ingredients whose composition declares this material as a constituent. The percentage shown is the supplier-declared concentration in that parent.

Ingredient%Range
Oud Firbest0.1–0.5%
chemicals · No. 2865

Arctander monograph

Perfume and Flavor Chemicals, page 1267.

TOPtenacity · lowpower · diffusive
sweetgassybalsamicfloralchemicalhydrocarbon
MW
104.15
BP
146°C
MP
Sp.Gr.
0.91
Refractive n
Rotation
Appearance

Colorless mobile liquid.

Solubility

Poorly soluble in water, soluble in alcohol and oils.

Odor

Extremely diffusive, sweet-gassy, in dilution balsamic and almost floral odor of poor tenacity. Overall rather chemical odor, often described as prototype of 'hydrocarbon' odor.

Uses in perfumery

This hydrocarbon is sometimes used in minute traces in perfume compositions to enhance floral topnotes, mainly in sweet and floral fragrances for household products, detergents, etc., where radiance and diffusion of odor is often preferred over tenacity.

Production

1) from Ethylbenzene by dehydrogenation. 2) from Ethylbenzene by chlorination, followed by dechlorination.

Identity
Aliases · 4
PhenylethyleneStyrolStyroleneVinylbenzene
Compliance note. Restriction data is sourced directly from IFRA publications and preserved with its document excerpt. Perfume Foundry is a compliance-support tool — not a substitute for a qualified safety assessor (CPSR / PIF).