Dimethyl Phthalate
AKA “DIMETHYLPHTHALATE, Avolin, Mipax, Palatinol M, Solvanom, Solvarone, Fermine, Dimethyl o-phthalate
Synthetic
Ingredient Facts
Dimethyl phthalate
AKA: DIMETHYLPHTHALATE, Avolin, Mipax, Palatinol M, Solvanom, Solvarone, Fermine, Dimethyl o-phthalate
Synthetic · Film Forming · EWG: 4
Synthetic
Occlusive
Solvent
Synthetic
Not Clean
Helps nail polish, nail care, and cosmetics maintain their texture and flow while creating a smooth, even finish that resists chipping.
Solubility less than 1 mg/mL at 68 °F (NTP, 1992)
Formula
C10H10O4
Mol. Weight
194.18
CAS #
131-11-3
Form
Powder
State
Dimethyl phthalate appears as a water-white liquid without significant odor. Denser than water and insoluble in water. Hence sinks in water. Flash point 300 °F. Eye contact may produce severe irritati
See origin →
Functions
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Plasticiser
Solvent
Dissolves other ingredients so they distribute evenly in the formula. Often the invisible "base" everything else is mixed into.
Quells irritation
Traditional Use
A synthetic plasticizer developed in the early 20th century and historically used in cosmetics to improve flexibility in nail polishes and film-forming products, though its use has declined due to regulatory concerns.
Skin Types
all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Caution
EWG
4
CIR
Safe w/Qualifications
Pregnancy
Caution
CIR Safety Findings
medical-approval
all-shades-safe
Phototoxicity Concern
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Feb 2026
Data: PubChem · CosIng · EWG · CIR