Technical Specifications

CAS No.: 4065-45-6

Chemical Name: 5-Benzoyl-4-hydroxy-2

benzenesulfonic acid IUPAC Name: Benzenesulfonic acid, 5-benzoyl-4-hydroxy-2

Appearance: Off-white powder Melting Point: 123–124 ℃ Absorption Coefficient K (λmax=286 nm): Min. 46

Product Overview

RQT® imported UV absorber UV-BP-4T is a water-soluble UV absorber. It is specially designed to protect nylon, wool, silk, rayon and leather from UV damage and improve the light fastness of dyes and pigments. UV BP-4 is water-soluble and features good compatibility with waterborne PU and acrylic systems.

Application & Dosage

1. Dyeing process of polyamide (nylon), wool, silk and rayon
2. Waterborne PU and acrylic: 1–3% in solution
3. PVA: 1–3%
4. Cosmetics
5. Water-based inks
6. Photoinitiator systems