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β-Citronellyl formate

3,7-Dimethyl-6-octen-1-yl methanoate

Citronellol formate · Formic acid citronellyl ester

Aliphatic monoterpenoid alkene ester · C₁₁H₂₀O₂

Chemical structure of β-Citronellyl formate
2D structure PubChem / NCI CIR

Chemical info

CAS number CAS
105-85-1
Molecular formula
C₁₁H₂₀O₂
Molecular weight
184.28 g/mol
Aroma
Fresh rose-citrus, sharp and light.

Safety

Low concern · Safe at standard use

β-Citronellyl formate is the formate ester of citronellol, found chiefly in geranium.

Skin. Undiluted on rabbit skin under 24-hour occlusion was irritating. A 4 percent patch test on 25 volunteers was mildly irritant and non-sensitizing.

Oral and dermal. Acute oral LD50 in rats is 8.4 g/kg; rabbit dermal LD50 exceeds 2 g/kg.

As an ester, the compound is unlikely to be carcinogenic.

Usage guidelines

Concern level
Low
Oils with high content
Geranium 4.8–12.4 percent

Found in essential oils

Principal sources
Geranium4.8 – 12.4 %

Notes

β-Citronellyl formate contributes a sharp rose-citrus note to geranium. The compound is among the esters characteristic of natural geranium fragrance.