PowerSorb™ 326,2-(2’-hydroxy-3’-t-butyl-5’-methylphenyl)-5-chlorobenzotriazole,CAS No.3896-11-5



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

Benzotriazole Based Ultraviolet Absorbers

PowerSorb™ 326

2-(2’-hydroxy-3’-t-butyl-5’-methylphenyl)-5-chlorobenzotriazole.
Synonym: 2-tert-butyl-6-(5-chloro-2H-benzotriazol-2-yl)-4-methylphenol

Chemical Structure

Introduction / Features

PowerSorb™ 326 is a UV absorber of the hydroxyphenylbenzotriazole class, which imparts outstanding light stability to plastics and other organic substrates.

Physical Properties

Chemical Name:	2-(2’-hydroxy-3’-t-butyl-5’-methylphenyl)-5-chlorobenzotriazole
CAS No.:	3896-11-5
EINECS No.:	223-445-4
Formula:	C`17`H`18` N`3`OCl
Molecular Weight:	316
Density`（20°C）`:	1.32g/cm3
Melting Point(°C):	138-142°C
Flash Point(°C):	238°C DIN 51584
Vapor Pressure（20°C）:	7.5E-7Pa
Volatile Loss(%):	Max.0.5
Color of Solution 460nm(%):	Min.97
Color of Solution 500nm(%):	Min.98
Appearance:	Pale Yellow Powder
Ash(%):	Max.0.1
Min. Purity:	99%

Solubility (20°C)	% w/w
Acetone:	1.0
Benzene:	10.5
Chloroform:	11.0
Cyclohexane:	6.4
Ethanol:	0.1
Ethyl acetate:	2.0
n-Hexane:	1.0
Methanol:	0.1
Dichloromethane:	4.3
Toluene:	11.3
MEK:	13.3
Styrene:	12.0
Mineral spirits:	1.5
Water:	<0.01

Applications

PowerSorb™ 326 is especially suited for polyolefins and cold cured polyesters.

Packings

PowerSorb™ 326 is supplied in 20Kg cartons or drums.

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