UV Absorber BP-4 CAS NO.: 4065-45-6

Chemical name: 2-Hydroxy-4-Methoxy Benzophenone-5-Sulphonic Acid
Molecular formula: C14H12O6S
Molecular weight: 308.31
CAS NO.: 4065-45-6
Chemical structural formula:

Technical index:
Appearance: Off-white or light yellow crystalline powder
Assay (HPLC): ≥ 99.0%

PH Value 1.2~2.2

Melting Point ≥ 140℃

Loss on Drying ≤ 3.0%

Turbidity in water ≤ 4.0EBC

Heavy Metals ≤ 5ppm

Gardner Color ≤ 2.0

Use:

Benzophenone-4 is a water-soluble & is recommended for the highest sun protection factors. Tests have shown that Benzophenone-4 stabilizes the viscosity of gels based on

polyacrylic acid (Carbopol, Pemulen) when they are exposed to UV radiation. Concentrations as low as 0.1% provides good results. It is used as ultra-violet stabilizer in wool, cosmetics, pesticides &lithographic plate coating. It must be noted

tha tBenzophenone-4is not compatible with Mg salts, particularly in water-oil emulsions. Benzophenone-4 has a yellow color that becomes more intensive in the alkaline range & may alter the due of colored solutions.

Packing and Storage:

Package: 25KG/CARTON

Storage: Stable in property, keep ventilation and away from water and high temperature.