June 30, 2026

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

Casa | Tópicos | 

Chemical Identity

  • Chemical name: Tris(2,4-di-tert-butylphenyl) fosfito
  • Número CAS: 31570-04-4
  • Molecular weight: 647.0 g/mol
  • Aparência: White crystalline powder or granules
  • Ponto de fusão: 183–187°C
  • Commercial equivalents: Irgafos 168, Doverphos S-680

How It Works

As a secondary antioxidant, Antioxidante 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, cor, and molecular weight.

Formulários

  • Polypropylene (PP): Standard stabilization partner with Antioxidant 1010 ou 1076
  • Polyethylene (Educação Física): Critical in HDPE/LLDPE pipe compounds and film
  • abdômen, QUADRIS, and styrenic polymers: Color and MFI stabilization
  • Engineering plastics (PA, PBT, BICHO DE ESTIMAÇÃO): 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 no 1:1 ou 1:2 ratio: 0.1–0.3% in polyolefins; 0.2–0.5% in engineering plastics.

Perguntas frequentes

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

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

Contact SUNCHEM

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

Artigo escrito pormercado
lupa