Triethylhexyl Trimellitate
AKA “3319-31-1, TRIS(2-ETHYLHEXYL) TRIMELLITATE, Totm, Tri-2-ethylhexyl trimellitate, Staflex TOTM, Morflex 510, Hatcol 200, Trimex T 08, 1, 2, 4-Benzenetricarboxylic acid, tris(2-ethylhexyl) ester, Monosizer W710L
Emollient
Ingredient Facts
Triethylhexyl trimellitate
AKA: 3319-31-1, TRIS(2-ETHYLHEXYL) TRIMELLITATE, Totm, Tri-2-ethylhexyl trimellitate, Staflex TOTM, Morflex 510, Hatcol 200, Trimex T 08, 1, 2, 4-Benzenetricarboxylic acid, Tris(2-ethylhexyl) ester, Monosizer W710L
Emollient · Emollient · EWG: 2
Synthetic
Emollient
Skin Conditioner
Clean
1,2,4-Benzenetricarboxylic acid, tris(2-ethylhexyl) ester
Solubility less than 1 mg/mL at 68 °F (NTP, 1992)
Formula
C33H54O6
Mol. Weight
546.80
CAS #
3319-31-1
Form
Liquid
State
Tris(2-ethylhexyl) trimellitate is a yellow oily liquid. (NTP, 1992)
See origin →
Functions
Plasticiser
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
Synthetic ester developed as a cosmetic emollient and plasticizer, used to enhance texture and conditioning properties in skincare and color cosmetics.
Skin Types
all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
EWG
2
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR