Dilauryl thiodipropionate

INS 389

Used as an antioxidant.

Dilauryl thiodipropionate is an antioxidant for fats and oils, working by a different mechanism from BHA and BHT — it destroys peroxides rather than intercepting radicals, so it is often used alongside them.

Where it is and isn’t permitted

Status of Dilauryl thiodipropionate by jurisdiction. Every jurisdiction this site covers is listed, including those where the substance does not appear.
JurisdictionStatusScope and limitsCitation
United StatesFood and Drug AdministrationPermitted21 CFR 182.3280retrieved 2026-09-07
Codex AlimentariusCodex Alimentarius Commission / JECFAPermitted, with conditions

6 food categories

highest permitted level 1,000 mg/kg

Show every food category
  • 02.1.2 Vegetable oils and fats — 200 mg/kg
  • 02.1.3 Lard, tallow, fish oil, and other animal fats — 200 mg/kg
  • 02.2.2 Fat spreads, dairy fat spreads and blended spreads — 200 mg/kg
  • 09.2.2 Frozen battered fish, fish fillets and fish products, including molluscs, crustaceans, and echinoderms — 200 mg/kg
  • 14.1.4 Water-based flavoured drinks, including "sport," “energy,” or "electrolyte" drinks and particulated drinks — 1,000 mg/kg
  • 15.0 Ready-to-eat savouries — 200 mg/kg
CXS 192-1995 Table One, INS 389and 5 further provisionsretrieved 2026-09-07

What it is made from

Made by reacting thiodipropionic acid with lauryl alcohol, usually from coconut or palm kernel oil.

  • Vegan
  • Vegetarian
InChIKey
GHKOFFNLGXMVNJ-UHFFFAOYSA-N
PubChem
CID 31250

Every name it appears under

62 recorded names. A label may use any of them.

INS number

  • 389

CAS registry number

  • 115628-90-5
  • 123-28-4
  • 31852-09-2
  • 53571-83-8

As it appears in regulation

  • Dilauryl thiodipropionate

Other names

  • 3,3'-Thiobispropionic acid, didodecyl ester
  • 3,3'-Thiodipropionic acid di-n-dodecyl ester
  • 3,3'-Thiodipropionic Acid Didodecyl Ester
  • 3,3'-Thiodipropionic Acid Didodecyl Ester; Didodecyl 3,3'-thiodipropionate
  • 3,3'-Thiodipropionic acid, bis-dodecyl ester
  • Advastab 800
  • Antiox L
  • Antioxidant AS
  • Antioxidant LTDP
  • Bis(dodecyloxycarbonylethyl) sulfide
  • BRN 1808848
  • Carstab dltdp
  • CCRIS 3936
  • Cyanox LTDP
  • D 1 (antioxidant)
  • Didodecyl 3,3'-thiodipropionate
  • Didodecyl 3,3-thiodipropionate
  • Didodecyl thiobispropanoate
  • Didodecyl thiodipropionate
  • Dilauryl .beta.,.beta.'-thiodipropionate
  • Dilauryl .beta.-thiodipropionate
  • Dilauryl 3,3'-thiodipropionate
  • Dilauryl beta-thiodipropionate
  • DILAURYL THIODIPROPIONATE
  • Dilauryl thiodipropionic acid
  • Dilaurylester kyseliny .beta.',.beta.'-thiodipropionove
  • Dilaurylthiodipropionate
  • DLT
  • Dltdp
  • DLTP
  • Dmptp
  • dodecyl 3-(3-dodecoxy-3-oxopropyl)sulfanylpropanoate
  • HSDB 353
  • Ipognox 89
  • Irganox PS 800
  • Lauryl 3,3'-thiodipropionate
  • Lusmit
  • Milban F
  • Neganox DLTP
  • Plastanox LTDP
  • Plastanox LTDP Antioxidant
  • Propanoic acid 3,3'-thiobis(didodecyl) ester
  • Propanoic acid, 3,3'-thiobis-, 1,1'-didodecyl ester
  • Propanoic acid, 3,3'-thiobis-, didodecyl ester
  • Propanoic acid, thiobis-, didodecyl ester
  • Propionic acid, 3,3'-thiobis-, didodecyl ester
  • Propionic acid, 3,3'-thiodi-, didodecyl ester
  • PTDE
  • Rasumitto
  • Stabilizer DLT
  • Sumilizer TPL
  • Thiobis(dodecyl propionate)
  • Thiobis[dodecyl propionate]
  • Thiodipropionic acid didodecyl ester
  • Thiodipropionic acid dilauryl ester
  • Tyox B

Hazard reference values

No reference value for this substance in the sources we hold.

Evidence and how bodies read it

Studies, and the differing conclusions regulators drew from them, are curated by hand rather than machine-read, and none has been written for this substance yet.

Sources for this page

  • ecfr retrieved 2026-09-07
  • gsfa retrieved 2026-09-07

Full licence terms and publisher details on Sources. How this page is built and updated: Method.

Machine-readable:/api/v1/additives/dilauryl-thiodipropionate.json