Grapefruit oil (CAS 8016-20-4) — Citrus Top Note Fragrance Ingredient

ByThe Good Scents
Citrus

Grapefruit oil

CAS 8016-20-4

Origin
Natural
Note
Top
IFRA
Use with awareness
Data as of: Mar 2026

What Is Grapefruit oil?

Grapefruit oil is a bright, zesty essential oil extracted from citrus peels. You’ll find it in fresh-scented cleaning products, invigorating body washes, and uplifting perfumes. This oil matters because it delivers an instant mood boost with its sparkling citrus character, making it a staple in fragrances designed to energize and refresh.

Safety Profile

USE WITH AWARENESS
Generally safeUse with awarenessProfessional use
✓ Common in cosmetic formulations
⚠ Potential phototoxicity – avoid sun exposure
⚠ Contains limonene – check allergen declarations
CAS
8016-20-4
Formula
Mixture
MW
Variable
Odor Family
Citrus
Key Constituents
Limonene
Limonene
Myrcene
Myrcene
Nootkatone
Nootkatone
Layer 1 · Enthusiast

What Does Grapefruit oil Smell Like?

Grapefruit oil bursts with a juicy, tart top note reminiscent of peeling fresh citrus – think pink grapefruit segments with their bitter pith still attached. The initial explosive brightness mellows into a cleaner, slightly woody citrus heart with subtle green undertones. Unlike sweeter orange oils, grapefruit maintains a refreshing bitterness throughout its evolution, drying down to a crisp, slightly peppery citrus rind character that lingers surprisingly well for a top note.

Scent Profile

In Famous Fragrances

Fragrance associations may not reflect actual formulations.

Eau de Guerlain(Guerlain, 1974)

Used for its sparkling citrus opening that contrasts beautifully with herbal mint and floral notes, creating a classic eau de cologne structure with modern vibrancy.

Light Blue(Dolce & Gabbana, 2001)

Grapefruit oil provides the electrifying top note that cuts through the aquatic heart, mimicking Mediterranean freshness with its bitter-sweet citrus character.

Grapefruit(Jo Malone, 1999)

Showcases grapefruit oil as the star ingredient, amplified with rosemary and vetiver to create a citrus fragrance with unusual depth and staying power.

Pamplelune(Guerlain, 1999)

Uses grapefruit’s bitter facets to counterbalance sweeter citrus notes, creating a sophisticated grapefruit interpretation with floral and woody nuances.

Bergamote 22(Le Labo, 2006)

Grapefruit oil complements the bergamot core, adding a juicy tartness that prevents the citrus accord from becoming too sweet or predictable.

Layer 2

Chemistry, Properties & Perfumer Guide

The Chemistry

Grapefruit oil is a complex mixture of volatile compounds primarily extracted by cold-pressing the fruit’s peel. The major components include limonene (85-95%), myrcene (1-2%), and citral (trace amounts). Unlike distilled citrus oils, cold-pressed grapefruit retains oxygenated compounds like nootkatone that contribute to its characteristic bitter-citrus profile. The oil’s phototoxic potential comes from furocoumarins like bergapten, though modern production methods often reduce these components through selective extraction.

Chemical Composition

Physical & Chemical Properties

AppearancePale yellow to pinkish liquid
Flash Point48 °C
Refractive Index1.475-1.485
Optical Rotation+85° to +95°

Key Constituent Properties

ConstituentCASMWBP °CXLogPVapor P.
Limonene138-86-3136.24176 °C4.381.5 mmHg
Myrcene123-35-3136.24166 °C4.272.1 mmHg
Nootkatone4674-50-4218.34125 °C3.90.0003 mmHg

Perfumer Guide

Note Position
Top
Volatility
High (30-90 min)
Blending
Excellent
ApplicationTypical %RangeNotes
Fine Fragrance1-3%Up to 5%Provides sparkling citrus openings
Body Care0.5-1%Up to 2%Invigorating shower gels and scrubs
Household Cleaners0.1-0.5%Up to 1%Freshness booster in detergents
Candles0.5-2%Up to 3%Bright citrus top notes

Classic Accords

+ Bergamot + Lemon = Classic Citrus + Mint + Rosemary = Invigorating Fresh + Jasmine + Orange Blossom = Citrus-Floral + Oakmoss + Patchouli = Citrus-Chypre

Tip: Combine with aldehydes C-10 or C-12 to enhance the sparkling citrus effect while improving longevity.

Alternatives & Comparisons

1
Grapefruit Methyl Pamplemousse CAS 67633-96-9

Synthetic alternative with enhanced grapefruit character and better stability, lacking phototoxic components.

2
Citronellol CAS 106-22-9

For formulations requiring citrus notes without phototoxicity concerns, though less authentic grapefruit character.

3
Orange Oil CAS 8008-57-9

When a sweeter, less bitter citrus profile is desired, though lacks grapefruit’s distinctive tartness.

Layer 3

Safety, Regulatory & Sustainability

⚠ Regulatory Disclaimer

General reference only. IFRA, REACH, EU Cosmetics Regulation standards update periodically. Consult current IFRA Standards Library before formulating. Not legal or regulatory advice.

IFRA Status

No IFRA restrictions, but contains limonene which requires allergen labeling. Phototoxic components naturally present but typically below concerning levels in modern production.

EU Allergen Declaration

Contains limonene (>0.001%) – must be declared under EU Cosmetics Regulation No 1223/2009.

GHS Classification

H315 Skin irritation H317 May cause allergic skin reaction H319 Eye irritation

RIFM Assessment

RIFM assessment confirms safe use at current industry levels, with phototoxicity concerns mitigated through typical use concentrations.

Sustainability

Grapefruit oil is a byproduct of juice production, making its sourcing relatively sustainable. However, citrus oil production can be water-intensive. Some producers now use eco-friendly cold-press methods that reduce energy consumption. Synthetic alternatives exist for formulators seeking to avoid phototoxicity or allergen issues while maintaining grapefruit character.

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References

  1. Dugo, G. & Di Giacomo, A. (2002). Citrus Oils: Composition, Advanced Analytical Techniques, Contaminants, and Biological Activity. CRC Press. ISBN 9780824705908
  2. Tisserand, R. & Young, R. (2014). Essential Oil Safety. Elsevier. ISBN 9780443062414
  3. IFRA Standards Library – Citrus Oils IFRA

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

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Ingredient Data Sheet

CAS 8016-20-4

Regulatory Status

IFRA ListedYes — see IFRA Standards for category limits⚖️ IFRA 51
Data Sources & Attribution
Physical data: PubChem (NIH/NLM), U.S. EPA CompTox Dashboard, EPA OPERA models, RDKit. Odor & flavor: Arctander (Perfume & Flavor Chemicals), Fenaroli's Handbook of Flavor Ingredients, Leffingwell. Thresholds: van Gemert (Compilations of Odour Threshold Values). Regulatory: IFRA Standards 51st, FEMA GRAS. Trade names: Surburg (Common Fragrance & Flavor Materials). All data compiled and cross-referenced for perfumertools.com.

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