Ultraviolet Absorbers > Benzophenone-4

2-Benzoyl-5-methoxy-1-phenol-4-sulphonic acid (Benzophenone-4)

 

Molecular Formula

C14H12O6 S

Molecular Weight

308.31

CAS No.

4065-45-6

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

a.5.0% max  b. 3.0% max

PH value

1.2-2.2

 UV Absorbance Max @285nm

460 min.

UV Absorbance Max @325nm

290 min.

Melting Point (∼C)

140 min.

Turbidity in water (EBC)

1.5 max

Package

25kg net cardboard drum

Storage:

Preserve in tight, light-resistent containers

Shelf Life:

2 Years

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