Synonymous:Uvasorb S 5,Spectra-Sorb UV 284..
Chemical Name:2-Benzoyl-5-methoxy-1-phenol-4-sulphonic acid, 5-Benzoyl-4-hydroxy-2-methoxybenzenesulfonic acid.
Molecular Formula:C14H12O6 S
Molecular Weight: 308.31
CAS # 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 | 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 |
Applications
Ultraviolet Absorber Benzophenone-4 is a kind of excellent water-soluble ultraviolet absorber, which is generally used for water-soluble cosmetics to resist solarization and also as UV Absorbers for other water-soluble printing ink and dopes.
Packing
25 kg net weight cardboard drum
Storage
Store in a well-ventilated, cool, dry area, out of direct sunlight. Keep containers tightly closed when not in use.
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