PowerSorb™ 234 CAS No. 70321-86-7

2-[2-hydroxy-3,5-di-(1,1-dimethylbenzyl)]-2H-benzo , triazole;

2-(2H-benzotriazol-2-yl)-4,6-bis( , 1-methyl-1-phenylethyl) phenol

PowerSorb™ 234 is a high molecular weight ultraviolet light absorber (UVA)
of the hydroxyphenyl benzotriazole class, imparting excellent light
stability to a variety of polymers.

Technical Data of PowerSorb™ 234 CAS No. 70321 86 7
Synonyms Tinuvin 234, Tinuvin 900, Uvinul 3034, Songsorb 2340,
Lowilite 234, Eversorb 234,Eversorb 76, Chiguard 234, Everstab 234/900.
CAS Number 70321-86-7
EINECS Number 274-570-6
Chemical Structure
Chemical Formula C30H29N3O
Molecular Weight 448
Packing PowerSorb™ 234 is supplied in 25Kg Cartons or Drums.
Note All information in the leaflet is based on our present knowledge and
experience. We reserve the right to make any changes according to
technological progress or further developments. Performance of the product
described herein should be verified by testing.

We specifically disclaim any other express or implied warranty of fitness
for a particular purpose or merchantability.

We disclaim liability for any incidental or consequential damages.

Benefits & Applications of PowerSorb™ 234 cas no 70321 86 7
PowerSorb™ 234 is highly effective for polymers processed at high
temperatures such as polycarbonates, poly alkylene terephthalates,
polyacetals, polyamides, polyphenylene sulfide, polyphenylene oxide,
aromatic copolymers, thermoplastic polyurethane and polyurethane fibers, as
well as for polyvinylchloride, styrene homo- and copolymers. Applications
include molded articles, films, sheets and fibers.

Physical Properties of PowerSorb™ 234 cas 70321 86 7
Appearance Off-white powder
Melting Range (°C) 138-142
Volatile Loss (%) Max.0.3
Specific Gravity (20°C, g/cm3) 1.22
Vapor Pressure (20°C, Pa) ~2-10
Color of Solution (460nm, %) Min.97
Color of Solution (500nm, %) Min.98
Ash (%) Max.0.05
Purity (%) Min.99
Solubility of PowerSorb™ 234 CAS No. 70321-86-7
Solubility [20°C] % w/w
Acetone 2
Benzene 10
Chloroform 35
Cyclohexane 5
Ethanol 0.3
Ethyl acetate 4
n-Hexane 0.6
Methanol <0.1
Dichloromethane 34
MEK 13
Toluene 20
Butyl carbitol 0.2
Butanol 0.3
Butyl acetate 4.5
Ethyl glycol 1
Xylene 10
Water <0.01


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