RIANOX 626

Product Features

A high performance, high molecular weight organo-phosphite processing stabilizer. Provides excellent color stabilization during compounding, fabrication and end use, and is highly effective at reducing polymer degradation during high-temperature processing. Also inhibits the catalytic action of metallic ions during the initial step of the oxidative mechanism. Higher phosphorus content than most competitive phosphite antioxidants at equivalent loading levels. FDA approved for food contact applications (21 CFR 178.2010).

Basic Information
CAS No. 26741-53-7
Chemical Name Bis(2,4-di-tert-butylphenyl) pentaerythritol diphosphite
Antioxidant Type Secondary Antioxidant — Phosphite Ester

Product Properties
Molecular Weight 604
Melting Range (°C) 170–180
Appearance White / Off-white Powder
Flash Point (°C) 168
Food Contact ✔ FDA Approved (21 CFR 178.2010)
Standard Packaging 20 kg Bag

Solubility (@25°C, g/100g solvent)
Solvent Solubility
Toluene 35.7
THF (Tetrahydrofuran) 35.0
Acetone 8.5
n-Hexane 4.8
n-Heptane 4.5
Methanol 1.9
Water Insoluble

Recommended Substrates

PP / HDPE / LDPE / LLDPE

ABS

Polycarbonate (PC)

PVC

Polyester (PET / PBT)

PS / Engineering Plastics

Elastomer & Adhesive

Polyamide (PA)

Food Contact Applications

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