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Benzotriazole Based Ultraviolet Absorbers

PowerSorb™ 1000

2-(2H-benzotriazol-2-yl)-p-cresol.

Synonym: 2-(2H-Benzotriazole-2-yl)-4-methylphenyl;
2- (2’-hydroxy-5’-methylphenyl) benzotriazole
Chemical Structure
Introduction / Features
PowerSorb™ 1000 is a strong absorber of UV radiation, imparting good light stability to a wide variety of polymers.it is a slightly yellowish crystalline powder.
Physical Properties
Chemical Name: 2-(2H-benzotriazol-2-yl)-p-cresol
CAS No.: 2440-22-4
EINECS No.: 219-470-5
Formula: C13H11N3O
Molecular Weight: 225
Melting Point(°C): 128-132
Flash Point(°C): 205
Vapor Pressure 20°C: 1.5E-4Pa
Transmittance(%)500nm: 5g/100ml
Specific Gravity[20°C]: 1.38g/cm3
Volatile (%) : Max.0.5
Color of Solution 440nm (%): Min.97
Color of Solution 450nm(%): Min.98
Appearance: Slightly Yellow Powder
Ash (%): Max.0.1
Min. Purity: 99%

Solubility (20°C) % w/w
Acetone: 3
Chloroform: 13
Dioctyl phthalate: 2
Benzene: 7
Butyl acetate: 3
Carbitol: 2
Ethanol: 0.3
Ethyl acetate: 3
n-Hexane: 0.8
MEK: 4
Methanol: 0.5
Dichloromethane: 16
Methyl methacrylate: 5
Mineral spirits: 1.5
Styrene: 7
Toluene: 6
Water: <0.01

Applications
PowerSorb™ 1000 provides ultraviolet protection in a wide variety of polymers including styrene homoand copolymers, engineering plastics such as polyesters and acrylic resins, polyvinyl chloride, and other halogen containing polymers and copolymers (e.g. vinylidenes), acetals and cellulose esters. Elastomers, adhesives, polycarbonate blends, polyurethanes, and some cellulose esters and epoxy materials also benefit from the use of PowerSorb™ 1000.
Packings
PowerSorb™ 1000 is supplied in 25Kg plastic drum lined iron barrel.
Technical Library
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