70321-86-7 Usage
Description
2-(2H-Benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)phenol, also known as UV Absorber 234, is a high molecular weight ultraviolet light absorber (UVA) belonging to the hydroxyphenyl benzotriazole class. It is characterized by its ability to provide excellent light stability to a variety of polymers.
Uses
Used in Polymer Industry:
2-(2H-Benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)phenol is used as a UV light absorber and stabilizer for polymers processed at high temperatures such as polycarbonate, polyesters, polyacetal, polyamides, polyphenylene sulfide, polyphenylene oxide, aromatic copolymers, thermoplastic polyurethane, and polyurethane fibers. It is also highly effective for polyvinylchloride, styrene homoand copolymers.
Application Reason:
UV Absorber 234 imparts outstanding light stability to these polymers, making it an essential component in the production of molded articles, films, sheets, and fibers. Its low volatility ensures that it remains effective even during high-temperature processing, providing long-lasting protection against UV-induced degradation.
Features/benefits
UV Absorber 234 features low volatility, exceptional light absorbing characteristics
and good compatibility in various substrates. This makes the product particularly
suitable for applications characterized by high surface area, such as
films and fibers.
Guidelines for use
Use levels of UV Absorber 234 range between 0.15 and 0.60 %, depending on
substrate and performance requirements of the final application. UV Absorber 234can be used alone or in combination with other functional additives such
as antioxidants (hindered phenols, phosphites) and HALS light stabilizers,
where often a synergistic performance is observed. Extensive performance
data of UV Absorber 234 alone or in combination with other additives are available
in many of the substrates listed above.
Handling & Safety
UV Absorber 234 exhibits a very low order of oral toxicity and does not present any abnormal problems in its handling or general use. Detailed information on handling and any precautions to be observed in the use of the product(s) described in this leaflet can be found in our relevant health and safety information sheet.
Flammability and Explosibility
Notclassified
Check Digit Verification of cas no
The CAS Registry Mumber 70321-86-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,0,3,2 and 1 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 70321-86:
(7*7)+(6*0)+(5*3)+(4*2)+(3*1)+(2*8)+(1*6)=97
97 % 10 = 7
So 70321-86-7 is a valid CAS Registry Number.
InChI:InChI=1/C40H32N8O2.C6H5N3.2ClH/c1-49-37-27-31(23-25-35(37)47-43-39(29-15-7-3-8-16-29)41-45(47)33-19-11-5-12-20-33)32-24-26-36(38(28-32)50-2)48-44-40(30-17-9-4-10-18-30)42-46(48)34-21-13-6-14-22-34;1-2-4-6-5(3-1)7-9-8-6;;/h3-28H,1-2H3;1-4H,(H,7,8,9);2*1H/q+2;;;/p-2