PowerSorb™ 320 ,2-(2'-Hydroxy-3',5'-di-t-butylphenyl)benzotriazole,CAS No.3846-71-7



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	Antioxidant \| Ultraviolet Absorber \| Light Stabilizer \| Photoinitiator

Benzotriazole Based Ultraviolet Absorbers

PowerSorb™ 320

2-(2'-Hydroxy-3',5'-di-t-butylphenyl)benzotriazole.
Synonym:2-benzotriazol-2-yl-4,6-di-tert-butylphenol

Chemical Structure

Introduction / Features

PowerSorb™ 320 is a strong absorber of ultraviolet radiation and has a high degree of photostability - photochemical energy absorbed in the ultraviolet region is dissipated as thermal energy.

Physical Properties

Chemical Name:	2-(2'-Hydroxy-3',5'-di-t-butylphenyl)benzotriazole
CAS No.:	3846-71-7
EINECS No.:	223-346-6
Formula:	C`20`H`25`N`3`O
Molecular Weight:	323
Melting Range:	152-155°C
Volatile Loss (%):	Max.0.5
Color of Solution 460nm (%):	Min.97
Color of Solution 500nm (%):	Min.98
Appearance:	White Powder
Ash (%):	Max.0.1
Min. Purity:	99%

Applications

PowerSorb™ 320 is recommended for use in styrenics, vinyls, polycarbonates, polyesters and acrylics the normal use level in plastics ranges from 0.2 to 0.8%.

PowerSorb™ 320 is highly effective in stabilizing coatings such as urethanes and nitrocellulose in coatings applications, the use levels range from 0.5 to 2.0%.

PowerSorb™ 320 can be used in combination with phenolic & phosphite antioxidants, and HALS to optimize performance in outdoor use.

Packings

PowerSorb™ 320 is supplied in 25kg carton box or 50kg fiber drum.

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