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Antioxidant 626
CAS No:26741-53-7
Structure:


Physicochemical properties: This product is soluble in organic solvents such as toluene and dichloromethane. It is slightly soluble in alcohol and insoluble in water. The flash point is 168 ° C; the ignition point is 421 ° C; the lower limit of dust explosion concentration is 0.12 Kg / m 3 .

Features: Improve the stability of the polymer during the ingredients, production and use, reduce the degradation of the polymer during processing, improve the resistance of the polymer to smoke fading in many applications, and other equivalent phosphites Compared with antioxidants, it has a higher phosphorus content; it can be used as a synergist for light-resistant stabilizers such as benzophenone and benzotriazole.

General Inspection: Project

Indicators

Appearance

White powder or particles

Melting point

170.0~180.0°C

heat reduction (80.0 °C)

≤1.0%

acid value

≤1.0mgKOH/g

Free 2,4-di-tert-butylphenol

≤1.0%

Main content

≥95.0%

Use: This product is a high performance solid organic phosphite antioxidant, which has good protection against the color of the polymer. It is superior to other phosphites, often with phenolic primary antibodies such as antioxidant SONOX1010. The combination of oxygen agents can improve the thermal stability of the polymer processing process. Widely used in PE, PP, PS, polyamide, polycarbonate, ABS and other polymer materials. The general dosage is from 0.1% to 0.3%.

Packing, storage and transportation: cardboard drum (box) lined with aluminum foil bag, net weight 25Kg per barrel (box). This product has poor hydrolysis resistance and should be protected against moisture and heat. Valid for 6 months.


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