1,1-Dimethyl-2-phenylethyl acetate (CAS 0151-05-03) — Sweet Top to middle Note Fragrance Ingredient

ByThe Good Scents
Sweet · Floral

1,1-Dimethyl-2-phenylethyl acetate

CAS 0151-05-03

Origin
synthetic
Note
Top to middle
IFRA
Generally safe
Data as of: Apr 2026

What Is 1,1-Dimethyl-2-phenylethyl acetate?

1,1-Dimethyl-2-phenylethyl acetate is a synthetic fragrance ingredient used in perfumes and personal care products. It contributes to floral and fruity accords, often found in body sprays and fabric conditioners. This molecule is valued for its ability to add volume and diffusion to fragrance compositions, making scents more vibrant and long-lasting.

Safety Profile

GENERALLY SAFE
Generally safeUse with awarenessProfessional use
✓ Safe in regulated products
⚠ Check for individual sensitivity
CAS
0151-05-03
Formula
Mixture
MW
Variable
Odor Family
Sweet · Floral
Layer 1 · Enthusiast

What Does 1,1-Dimethyl-2-phenylethyl acetate Smell Like?

1,1-Dimethyl-2-phenylethyl acetate opens with a bright, effervescent fruitiness reminiscent of ripe pears and fresh apples. As it evolves, a soft floral heart emerges, like petals dusted with powdered sugar. The dry-down reveals a subtle woody-musky undertone that adds depth without heaviness. Its character is playful yet sophisticated, with excellent diffusion that makes it ideal for modern, airy compositions.

Scent Profile

In Famous Fragrances

Fragrance associations may not reflect actual formulations.

Light Blue(Dolce & Gabbana, 2001)

Used as a fruity-floral bridge between citrus top notes and woody base, enhancing the fragrance’s transparency and wearability.

Chance Eau Tendre(Chanel, 2010)

Adds volume to the signature quince note, creating a luminous halo effect around the floral heart.

Layer 2

Chemistry, Properties & Perfumer Guide

The Chemistry

1,1-Dimethyl-2-phenylethyl acetate is a branched ester with a phenyl group. The molecule’s structure combines aromatic and aliphatic characteristics, giving it both fruity and floral odor properties. It is synthesized through esterification reactions using phenylethyl alcohol derivatives. The geminal dimethyl group increases volatility while the acetate group contributes to the fruity character.

Physical & Chemical Properties

AppearanceColorless liquid
Molecular Weight192.26 g/mol

Perfumer Guide

Note Position
Top to middle
Volatility
Medium (1-3 hours)
Blending
Good
ApplicationTypical %RangeNotes
Fine Fragrance2-5%Up to 10%Adds fruity lift
Body Care0.5-2%Up to 3%Freshness booster

Classic Accords

Tip: Use with citrus oils to prevent top notes from becoming too candied.

Alternatives & Comparisons

1
Phenethyl acetate CAS 103-45-7

More straightforward rose-honey character without fruity nuances.

Layer 3

Safety, Regulatory & Sustainability

⚠ Regulatory Disclaimer

General reference only. Consult current IFRA Standards Library before formulating.

IFRA Status

Not currently restricted by IFRA.

RIFM Assessment

Not yet evaluated by RIFM but structurally similar to approved materials.

Sustainability

As a synthetic material, production can be optimized for minimal waste. No known environmental accumulation concerns. Typically produced from petrochemical feedstocks.

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References

  1. Bauer et al. (2001). Common Fragrance and Flavor Materials.

Data: PubChem (NIH), PubMed, RIFM, IFRA. Last reviewed: Apr 2026.

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