Geranium oil terpenes (CAS 68917-31-7) — Floral Top to Heart Note Fragrance Ingredient

Floral · Green

Geranium oil terpenes

CAS 68917-31-7

Origin
natural
Note
Top to Heart
IFRA
Generally safe
Data as of: Apr 2026

What Is Geranium oil terpenes?

Geranium oil terpenes are the aromatic compounds naturally found in geranium essential oil. People encounter them in perfumes, candles, and natural skincare products. These terpenes create the plant’s distinctive green, floral-rosy scent profile. Their complex aroma bridges herbal freshness with floral elegance, making them valuable for perfumers who want natural complexity without using the full essential oil. This allows more precise control over fragrance formulas while maintaining botanical authenticity.

Safety Profile

GENERALLY SAFE
Generally safeUse with awarenessProfessional use
Naturally occurring in edible plants
Possible skin sensitivity with undiluted use
CAS
68917-31-7
Formula
Mixture
MW
Variable
Odor Family
Floral · Green
Layer 1 · Enthusiast

What Does Geranium oil terpenes Smell Like?

Geranium oil terpenes unfold with vibrant green top notes – like crushing fresh leaves between your fingers, with a crisp citrus-herbal edge. The heart reveals a sophisticated floral character, not as sweet as rose but with similar rosy undertones layered over minty freshness. Dry-down brings earthy, slightly woody nuances that ground the fragrance. The overall effect is harmoniously balanced between freshness and warmth, with excellent diffusion that makes it useful for both top and heart note applications.

Scent Profile

In Famous Fragrances

Fragrance associations may not reflect actual formulations.

Geranium pour Monsieur(Frédéric Malle, 2009)

Uses geranium terpenes as the star ingredient, amplified with mint and incense to create a modern masculine floral that’s fresh yet sophisticated.

Eau de Guerlain(Guerlain, 1974)

Features geranium terpenes in the heart, blending with citrus and herbs for a classic cologne structure with added floral depth.

Layer 2

Chemistry, Properties & Perfumer Guide

The Chemistry

Geranium oil terpenes primarily consist of monoterpenes and sesquiterpenes including citronellol, geraniol, and linalool. These oxygenated terpenes contribute to the oil’s floral character. The terpene profile varies by Pelargonium species and growing conditions, with South African varieties typically richer in rose-like compounds. Extraction is typically via steam distillation of leaves and flowers. The complex mixture demonstrates how multiple terpenes work synergistically – individual isolates can’t replicate the full spectrum effect.

Physical & Chemical Properties

AppearancePale yellow to greenish liquid
SolubilitySoluble in alcohol, oils; insoluble in water

Perfumer Guide

Note Position
Top to Heart
Volatility
Medium (2-4 hours)
Blending
Excellent
ApplicationTypical %RangeNotes
Fine Fragrance1-3%0.5-5%Adds natural floral complexity
Home Fragrance0.5-2%0.1-3%Provides fresh-herbal diffusion

Classic Accords

+ Rose + Patchouli = Modern Floral + Citrus + Oakmoss = Vintage Cologne

Tip: Combine with citrus top notes to enhance freshness, or with woody bases to emphasize the earthy facets.

Alternatives & Comparisons

1
Rose Oxide CAS 16409-43-1

For a more metallic, dewy rose effect when geranium’s greenness isn’t desired.

Layer 3

Safety, Regulatory & Sustainability

⚠ Regulatory Disclaimer

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

IFRA Status

No restrictions. Geranium oil and its terpenes are IFRA compliant without limitations.

EU Allergen Declaration

Contains naturally occurring geraniol and citronellol which require declaration above 0.001% in leave-on products.

RIFM Assessment

RIFM considers geranium oil and its terpenes safe as currently used in fragrance.

Sustainability

Geranium is typically grown as a commercial crop, with multiple harvests per year from the same plants. Steam distillation is energy-intensive but water is recycled. Some concerns exist about habitat conversion for plantations. Synthetic terpene blends can reduce agricultural impact but lack the full complexity of natural extracts.

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References

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

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