Methyl Pelargonate
AKA “METHYL NONANOATE, 1731-84-6, Nonanoic acid, methyl ester, Methyl nonylate, Methyl n-nonanoate, Pelargonic acid methyl ester, Nonanoic acid methyl ester, FEMA No. 2724, Methyl ester nonanoic acid
Emollient
Ingredient Facts
Methyl pelargonate
AKA: METHYL NONANOATE, 1731-84-6, Nonanoic acid, Methyl ester, Methyl nonylate, Methyl n-nonanoate, Pelargonic acid methyl ester, Nonanoic acid methyl ester, FEMA No. 2724, Methyl ester nonanoic acid
Emollient · Emollient · EWG: 4
Synthetic
Emollient
Fragrance
Skin Conditioner
Not Clean
Methyl nonanoate is a fatty acid methyl ester obtained from the formal condensation of methanol and nonanoic acid; a colourless liquid with a fruity odour, used in perfumes and flavours, and for medical research. It has a role as an antinematodal drug, an antifungal agent, a fragrance, an epitope and a plant metabolite. It is functionally related to a methanol and a nonanoic acid.
Solubility 0.0229 mg/mL at 25 °C
Formula
C10H20O2
Mol. Weight
172.26
CAS #
1731-84-6
Form
Liquid
State
Clear colorless liquid with an ester-like odor; [Acros Organics MSDS]
See origin →
Functions
Perfuming
Added for scent. Can be natural or synthetic. Common irritant and allergen — one of the top reasons people react to products.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Locks In Moisture
Traditional Use
A synthetic ester developed for cosmetic applications. Created to function as a volatile emollient and solvent in modern skincare and fragrance formulations.
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
RIFM fragrance ingredient safety assessment, pentanedioic acid, 1,5-dimethyl ester, CAS Registry Number 1119-40-0.
Api AM, Belsito D, Botelho D, Browne D, Bruze M et al.
Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association, 2018
Final report of the Cosmetic Ingredient Review Expert Panel on the safety assessment of Pelargonic Acid (nonanoic acid) and nonanoate esters
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
Methyl Pelargonate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Synthesis of mixed esters of ascorbic acid using methyl esters of palm and soybean oils.
Hsieh HJ, Chen JW, Giridhar R, Wu WT
Preparative biochemistry & biotechnology, 2005
Final report of the Cosmetic Ingredient Review Expert Panel on the safety assessment of pelargonic acid (nonanoic acid) and nonanoate esters.
Johnson W Jr, Heldreth B, Bergfeld WF, Belsito DV, Klaassen CD et al.
International journal of toxicology, 2011
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR