Antioxidant 626

Antioxidant 626 is a type of phosphite-based auxiliary antioxidant. It is generally regarded as an upgraded product of antioxidant 168. Its key features include resistance to yellowing and high transparency. It is a low-volatile organic synthetic antioxidant and polymerization inhibitor, and is widely used in the synthesis and processing of various plastics such as polypropylene, polyethylene, ABS, polycarbonate fibers, and polyester resins.

Product Details:

● Appearance: White powder	● Place Orign: China
● Formula: C₃₃H₅₀O₆P₂	● CAS No.: 26741-53-7
● Code: RZAT626	● Shelf Life: 24 month
● Certification: ISO9001

Payment & Shiping Terms:

Minimum Quantity: 1MT
Packaging Details: 25kg/carton(bag),PE inner bag
Delivery Time: 10-15 days
Payment Term: T/T

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Tag : Categories : Antioxidant

Specification:

Items	Specifications
Appearance	White powder or beads
Melting point range,℃	170.0~180.0
Heating reduction,%	1.0 Max
Acid value,mg KOH/g	1.0 Max
Free 2, 4-di-tert-butylphenol,%	1.0 Max
Main content,%	96.0 Min
Active principle,%	98.0 Min

Storage and Package:

It should be stored in a dry and cool environment as a general chemical and kept in a sealed carton.

Packed in cartons or paper-plastic composite bags lined with plastic bags, 25Kg/carton(bag).

Performance and application:

Antioxidant 626 is a high-performance solid phosphite ester antioxidant with excellent thermal stability and long-term durability. It effectively protects polymers from thermal and oxidative degradation during processing, and also provides good color stability. When used in combination with phenolic primary antioxidants, it exhibits a strong synergistic effect. This product is widely applied in polyolefins such as polyethylene, polypropylene, and ethylene hydrocarbon copolymers, as well as in engineering plastics including polystyrene homopolymers or copolymers, polyurethanes, elastomers, and adhesives. Furthermore, Antioxidant 626 can be used together with light stabilizers such as hindered amine light stabilizers (HALS) and ultraviolet absorbers for enhanced protection. The recommended dosage is 0.05% to 0.15%.