antioxidant of 168

1.Antioxidant 168 is secondary antioxidant 2.Can mix with Ca stearate ,Antioxidant 1010,168 ,then make granule

Name :Antioxidant #168

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

Molecular Weight:646       

Molecular Formula: C42H63O3P

Specifications:

Item	Requirements
Appearance	White crystalline powder
Melting Point	183~187
Purity	≥99.0%
Transmittance	425nm ≥98%
	500nm ≥98%
Acidity (mg KOH/g)	≤0.3%
Volatiles	≤0.5%
Solubility	Clear solution
Hydrolyzing Time (h)	14
free2,4-di-tert.-butyl-phenol,wt%	≤0.2

Properties:

The appearance is the white crystallization powder 183 - 187 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: 25Kgs/drum

Reference dosage:

0.1%-0.3%

Period of Validity:

Normally 24 months

antioxidant of 168