June 30, 2026

What Is Antioxidant 168 Used For? Приложения, Specs and Sourcing

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Chemical Identity

  • Chemical name: Трис(2,4-ди-трет-бутилфенил) фосфит
  • Номер CAS: 31570-04-4
  • Molecular weight: 647.0 г/моль
  • вид: White crystalline powder or granules
  • Температура плавления: 183–187°C
  • Commercial equivalents: Иргафос 168, Doverphos S-680

How It Works

As a secondary antioxidant, антиоксидант 168 decomposes hydroperoxides formed during melt processing, converting them to stable alcohols before they generate radicals. This protects the polymer during high-temperature extrusion and injection molding, preserving melt flow, цвет, and molecular weight.

Приложения

  • Polypropylene (ПП): Standard stabilization partner with Antioxidant 1010 или же 1076
  • Polyethylene (ЧП): Critical in HDPE/LLDPE pipe compounds and film
  • АБС, БЕДРА, and styrenic polymers: Color and MFI stabilization
  • Engineering plastics (Пенсильвания, ПБТ, ДОМАШНИЙ ПИТОМЕЦ): High-temperature processing stability
  • Thermoplastic elastomers (TPE, TPU): Color retention
  • Adhesives and hot-melt systems: Processing viscosity stability

Typical Dosage

Combined loading with Antioxidant 1010 в 1:1 или же 1:2 ratio: 0.1–0.3% in polyolefins; 0.2–0.5% in engineering plastics.

Часто задаваемые вопросы

Is Antioxidant 168 the same as Irgafos 168?
Chemically identical (КАС 31570-04-4). Иргафос 168 is the BASF brand; антиоксидант 168 is the generic designation used by Chinese manufacturers.

Is it food-contact approved?
Да. Listed in FDA 21 CFR §178.2010 and EU Plastics Regulation 10/2011. Specific migration limits apply.

Contact SUNCHEM

Get pricing, образцы, and COA for Antioxidant 168. Contact SUNCHEM for export documentation and technical support.

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