UV Absorber 326CAS#3896-11-5
Excellent UV Protection Performance: Strongly absorbs ultraviolet radiation in the 290–400 nm range, effectively blocking harmful UV rays, reducing material degradation, fading, and discoloration.
High Thermal and Chemical Stability: Maintains performance under high processing temperatures with low volatility, and shows strong chemical stability without adverse reactions with other material components.
Good Compatibility and Dispersion: Exhibits excellent miscibility with polymers and fabrics, allowing uniform dispersion without blooming, frosting, or migration, ensuring consistent long-term protection.
Safe, Durable, and Cost-Effective: Colorless, non-toxic, and odorless with good photochemical stability and resistance to immersion, while being economical and easy to source for large-scale industrial applications.
Product Description of UV Absorber 326 CAS#3896-11-5
Ultraviolet absorbers are additives designed to block or significantly reduce the transmission of ultraviolet radiation. They are required to exhibit excellent thermal stability, remaining unchanged during processing, along with low volatility at elevated temperatures. These absorbers are capable of efficiently absorbing UV light, particularly in the wavelength range of 290–400 nm. They also possess strong chemical stability and do not adversely react with other components in the formulation.
In addition, ultraviolet absorbers show good compatibility with materials, allowing uniform dispersion without blooming or migration. They have high photochemical stability, resisting decomposition and discoloration under light exposure, and are colorless, non-toxic, odorless, and resistant to immersion. They are also economical and readily available.
Based on chemical structure, ultraviolet absorbers can be classified into salicylates, benzophenones, benzotriazoles, substituted acrylonitriles, triazines, and other types. When incorporated into fabrics, they provide effective UV shielding, reduce color fading, and improve the light fastness of polyester disperse dyes. UV Absorber 326 is a representative product within this category.
UV Absorber 326 Chemical Properties
| Melting point | 144-147 °C(lit.) |
| Boiling point | 460.4±55.0 °C(Predicted) |
| Density | 1.26±0.1 g/cm3(Predicted) |
| Vapor pressure | 0Pa at 20℃ |
| Storage temp | Sealed in dry,Room Temperature |
| Solubility | Chloroform (Slightly), Ethyl Acetate (Slightly), Methanol (Slightly) |
| Pka | 9.31±0.48(Predicted) |
| Form | Solid |
| Color | Pale Yellow to Light Yellow |
| Water Solubility | 4μg/L at 20℃ |
| InChI | InChI=1S/C17H18ClN3O/c1-10-7-12(17(2,3)4)16(22)15(8-10)21-19-13-6-5-11(18)9-14(13)20-21/h5-9,22H,1-4H3 |
| InChIKey | OCWYEMOEOGEQAN-UHFFFAOYSA-N |
| SMILES | C1(O)=C(C(C)(C)C)C=C(C)C=C1N1N=C2C=C(Cl)C=CC2=N1 |
| LogP | 6.580 (est) |
| CAS DataBase Reference | 3896-11-5(CAS DataBase Reference) |
| EPA Substance Registry System | 2-tert-Butyl-6-(5-chloro-2H-benzotriazol-2-yl)-p-cresol (3896-11-5) |
| Hazard Codes | Xi |
| Risk Statements | 36/37/38-53 |
| Safety Statements | 26-36-61 |
| WGK Germany | 1 |
| HS Code | 29339900 |
Product Application of UV Absorber 326 CAS#3896-11-5
It is primarily applied in materials such as polyvinyl chloride, polystyrene, unsaturated resins, polycarbonate, polymethyl methacrylate, polyethylene, ABS resins, epoxy resins, and related polymer products.
