murphyDilauryl Thiodipropionate
AKA: Propanoic acid, Didodecyl ester, Propanoic acid 3, 3'-thiobis(didodecyl) ester, PTDE, 123-28-4, Didodecyl 3, 3'-thiodipropionate, Lusmit, Tyox B
Synthetic
Antioxidant
Clean
OriginProduced from lauric acid derivatives and thiodipropionates through synthetic chemical synthesis. Created via esterification of thiodipropanoic acid with lauryl alcohol or fatty acid precursors.
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
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Antioxidant
Fights free radicals — the unstable molecules from UV, pollution, and stress that break down collagen and cause premature aging.
Neutralizes Free Radicals
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed4 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not Phototoxic
Human test and Product formulation test found no phototoxicity in the CIR safety assessment (CIR 110 and 526)
Not an Eye Irritant
2 studies / 2 not irritating (CIR 110 and 526)
Not a Sensitizer
3 studies / 3 not sensitizing (CIR 110 and 526)
Mixed Skin Irritation Results
7 studies / 2 irritating / 2 mixed / 3 not irritating / reactions slight to mild (CIR 110 and 526)
Regulatory Agencies
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR