天津UV Absorber UV-284 (BP-4)

Chemical name: 2-hydroxy-4-methoxy benzophenone-5-sulfonic acid

English name: 2-Hydroxy-4-methoxy-benzophenone-5-Sulfonic Acid

Molecular formula: C14H12O6S

Molecular weight: 308.31

Appearance light yellow powder

Content ≥ 99.0%

Melting point 110-120 ℃

Loss on drying ≤ 3%

PH 1.2-1.8 (1% aqueous solution)

Light absorption 285nm z ≥ 416

325nm z ≥ 256

Characteristics and Application: This product is non-toxic, non flammable, non explosive, and highly hygroscopic in the air. It is an excellent acidic aqueous solution ultraviolet absorber that can strongly absorb 290-400nm ultraviolet light. Widely used as a UV absorber for water-based polymer coatings and lac paints to prevent photocatalytic oxidation of water-based polymer coatings and lac paints; It is a good sunscreen for cosmetics and a UV absorber for improving the weather resistance of woolen fabrics. The general dosage is 0.2-1.5%.

Packaging: High pressure cardboard drum packaging, net weight 20kg