China UV531 Light Yellow Crystalline Powder - Top Suppliers and Factory for Quality Chemical Products
| Chemical Name | 2-Hydroxy-4-n-octoxybenzophenone | ||
| CAS Number | 1843-05-6 | ||
| Molecular Structure |
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| Product Form | Light yellow crystalline powder | ||
| Specifications | TEST | SPECIFICATION | |
| Purity (%) | 99.00 min | ||
| Melting Point (℃) | 47.00 – 49.00 | ||
| Volatiles (%) | 0.50 max | ||
| Ash (%) | 0.10 max | ||
| Transmittance (%) | |||
| 450 nm | 90.00 min | ||
| 500 nm | 95.00 min | ||
| Application |
UV Absorber
Anti-Aging Additive
Benzophenone Class
Overview YIHOO UV-531 is a high-performance benzophenone-class ultraviolet (UV) absorber, chemically designated as 2-hydroxy-4-n-octanoxy-benzophenone. At room temperature, it presents as a pale yellow needle-like crystalline powder. As a highly efficient anti-aging additive, it exhibits strong absorption of ultraviolet light in the 270–340 nm range—the key UV band that triggers polymer degradation and aging. Properties This product features a comprehensive set of superior properties including low coloration, non-toxicity, excellent substrate compatibility, low migration tendency, and excellent processability. It is widely applicable to a broad spectrum of polymer materials such as PE, PVC, PP, PS, PC, acrylic glass, polypropylene fibers, and ethylene-vinyl acetate (EVA) copolymers. Coating Systems It delivers excellent light stabilization effects for dry phenolic varnishes, alkyd varnishes, polyurethane, acrylic, epoxy and other air-drying coating systems, as well as automotive topcoats, powder coatings, polyurethane products, and rubber articles.
Recommended Dosage: 0.1% – 0.5% by weight relative to the target material.
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| Package | 20 / 25 kg carton | ||