Diethyl Malonate
AKA “Diethyl propanedioate, Ethyl malonate, Malonic ester, Propanedioic acid, diethyl ester, 3-diethyl propanedioate, Carbethoxyacetic ester, Malonic acid
Synthetic
Ingredient Facts
Diethyl malonate
AKA: Diethyl propanedioate, Malonic ester, Propanedioic acid, Diethyl ester, 3-diethyl propanedioate, Carbethoxyacetic ester, Malonic acid
Synthetic · Fragrance · EWG: 4
Synthetic
Fragrance
Solvent
Synthetic
Clean
A subtle fragrance compound that adds a delicate scent layer to beauty products, helping create the overall fragrance profile you experience when you use the product.
Solubility In water, 20 g/L at 20 °C
Formula
C7H12O4
Mol. Weight
160.17
CAS #
105-53-3
Form
Liquid
State
Liquid, Other Solid; Liquid
See origin →
Functions
Fragrance
Added for scent. Can be natural or synthetic. Common irritant and allergen — one of the top reasons people react to products.
Solvent
Dissolves other ingredients so they distribute evenly in the formula. Often the invisible "base" everything else is mixed into.
Adds Fragrance
Traditional Use
Modern synthetic compound developed for use as a solvent and conditioning agent in cosmetic formulations. Created to provide improved stability and texture in personal care products.
Skin Types
all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
EWG
4
CIR
Insufficient
Pregnancy
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USAunder review
EUrestricted
JAPANrestricted
CANADArestricted
Verified Feb 2026
Data: PubChem · CosIng · EWG · CIR