Antioxidant ST - 168

Chemical name: tri (2.4- bis - tert-butyl phenyl) phosphite

Molecular weight: 646

Molecular formula: C42H63O3P

CAS NO.:31570-04-4 

chemical formula

quality standard

Properties: white crystalline powder appearance; Melting point of 182 ℃ to 186.5 ℃; Flash point 257 ℃; Soluble in toluene, dichloromethane and other organic solvents, slightly soluble in esters, insoluble in water.

Usage: this product is a kind of high performance solid organic phosphorous ester antioxidant, which has a good protective effect on the color and luster of the polymer, better than other phosphorous esters, generally not used alone, often used in combination with phenolic main antioxidant such as antioxidant 1010, can improve the thermal stability of the polymer processing. This product is widely used in high molecular materials such as PE, PP, PS, polyamide, polycarbonate and ABS

Storage and transportation: this product is poor in hydrolytic resistance, and should be moisture-proof and heat-proof.

Packing: cardboard drum (box) lined with plastic bag, each bag (box) net weight of 25Kg.

Reference dosage: general dosage is 0.1%-0.3%.