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Dilauryl Thiodipropionate
AKA “Propanoic acid, 3, 3'-thiobis-, didodecyl ester, Propanoic acid 3, 3'-thiobis(didodecyl) ester, PTDE, RefChem:587954, 123-28-4, Didodecyl 3, 3'-thiodipropionate, Lusmit, Dltdp, Tyox B”
Antioxidant
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Ingredient Facts
Dilauryl thiodipropionate
AKA: Propanoic acid, 3, 3'-thiobis-, Didodecyl ester, Propanoic acid 3, 3'-thiobis(didodecyl) ester, PTDE, RefChem:587954, 123-28-4, Didodecyl 3, 3'-thiodipropionate, Lusmit, Dltdp, Tyox B
Antioxidant · Antioxidant · EWG: 1
Synthetic
Antioxidant
Clean
Didodecyl 3,3'-thiodipropionate
Solubility Soluble in most organic solvents
Formula
C30H58O4S
Mol. Weight
514.80
CAS #
123-28-4
Form
Liquid
State
Pellets or Large Crystals; Dry Powder, Pellets or Large Crystals, Liquid; Dry Powder; Other Solid
See origin →
Functions
Antioxidant
Fights free radicals — the unstable molecules from UV, pollution, and stress that break down collagen and cause premature aging.
Neutralizes Free Radicals
Traditional Use
A synthetic antioxidant developed in the 20th century. Used in cosmetics to prevent oxidation and rancidity of oils and fats in formulations.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR