70321-86-7 Usage
Characterization
UV Absorber 234 is a high molecular weight ultraviolet light absorber (UVA) of the hydroxyphenyl benzotriazole class, imparting excellent light stability to a variety of polymers.
Applications
UV Absorber 234 is highly effective for polymers processed at high temperatures such as polycarbonates, polyalkylene 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.
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.
Uses
Different sources of media describe the Uses of 70321-86-7 differently. You can refer to the following data:
1. Benzotriazole BT is a low volatile benzotriazole UV light absorber and stabilizer.
2. Low volatile benzotriazole UV light absorber and stabilizer.Imparts outstanding light stability for polymers processed at high temperatures such as polycarbonate, polyesters, polyacetal, polyamides, polyphenylene sulfide, polyphenylene oxide, aromatic copolymers, thermoplastic polyurethane and polyurethane fibers also highly effective for polyvinylchloride, styrene homo- and copolymers.
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
