Antioxidant 168

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Name and Molecular FormulaAntioxidant 168

Chemical Name Tris-(2.4-di-t-butylphenyl)- phosphite

Molecular Weight646

Molecular Formula: C42H63O3P

Chemical Structure

Quality Standards

Item
Requirements

Appearance
White crystalline powder

Melting Point
183^187

Purity
e99.0%

Transmission
425nm e98%

500nm e98%

Acidity (mg KOH/g)
d0.3%

Volatiles
d0.5%

Solubility
Clear solution

Hydrolyzing Time (h)
14

free2,4-di-tert.-butyl-phenol,wt%
d0.2

Properties

The appearance is the white crystallization powder 182 of point - 186. 5 degrees Centigrade Flash point is 257 degrees Centigrade Apt to is it on toluene , two chlorine methane ,etc. organic solvent , is it on ester type , dissolve on ink to dissolve a little to dissolve.

Applications

The product is a kind of high-effective solid phosphite ester antioxidant, which is superior to other phosphite ester in the effective protection of polymers’ color. It is often blended with phenolic principal antioxidant (such as AT-10) to prepare composite antioxidant which improves the thermo-stability of polymer processing, thus making it widely applied in PE, PP, PS, PA, PC, ABS and many other polymer materials.

Storage

Protection from moisture and heat is needed.

Packaging

Packaging: cardboard boxes with plastic liners, net weight: 25Kg / box.

Reference dosage

0.1%-0.3%

Period of Validity

24 months

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