Dilauryl thiodipropionate

Dilauryl thiodipropionate (CAS 123-28-4), abbreviated DLTDP and approved as food additive E389, is a thioester-based antioxidant used to prevent oxidative degradation.

Where is Dilauryl thiodipropionate used?

• Plastics and polymer processing: combined with primary antioxidants such as hindered phenols to extend service life of polyolefins, PVC, and rubber compounds exposed to heat
• Food: stabilizes fats and oils against rancidity, particularly edible fat blends and processed food products
• Personal care: protects lipid-rich bases including creams, ointments, and hair oils from oxidative breakdown during shelf storage
• Industrial lubricants: slows oxidative thickening and acid buildup in base oils under high-temperature operating conditions
• It functions as a secondary antioxidant, decomposing hydroperoxides before they trigger chain-reaction oxidation in polymers, fats, and lubricant systems.

Commercial specifications

• Packaging: fiber drums and bags; bulk quantities