Benzophenone-4

Benzophenone-4 Chemical Name: 2-Benzoyl-5-methoxy-1-phenol-4-sulphonic acid

Molecular Formula: C14H11O6S

Molecular Weight: 308.31

CAS No: 4065-45-6

Specification Appearance: White or light yellow crystalline powder

Assay: 99.0% min.

Heavy metals: 5ppm max.

Colour (Gardner-10% aqueous solution): 1.0 max.

Loss on drying: < 3.0%

pH value: 1.2-2.2

UV Absorbance Max 460 min.

UV Absorbance Max 290 min. Melting Point: > 140C.

Turbidity in water (EBC): 1.5 max

Package: 25kg net cardboard drum

Storage: Preserve in tight, light-resistent containers

Shelf Life: 2 Years

UV-light absorber series They are kind of broad-spectrum ultraviolet absorber, owns characteristics such as: High absorption efficiency, innocuity, good stability to heat, light. As the type I sunscreen agent approved by FDA in the US, it can absorb UV-A and UV-B at the same time. It is widely used in the sunfast cream, sunfast milk, sunfast latex, sunfast oil etc.