2,3,4,4'-Tetrahydroxybenzophenone
Specification
| Appearance | Yellow to light yellow crystalline powder |
| Purity | 99.5%min |
| Melting Point (Deg C ) | 219-220 |
| Moisture | 0.5%max |
| Color | 4.0 max |
| Turbity | 4.0 NTU max |
| Fe | 100ppm max |
| Pb | 100ppm max |
| Na | 100ppm max |
| K | 100ppm max |
| Ca | 100ppm max |
| Mg | 100ppm max |
| Zn | 100ppm max |
| Cu | 100ppm max |
| Chloride | 100ppm max |
| Bromide | 100ppm max |
Package:25kg per Drum
Application:BP-28 is a UV absorber of the hydroxyphenyl Benzophenone class which imparts Outstanding light stability to paintings and suntan oil, used for photosensitive glue for PS plate and photoresist.especially suitable for cosmetic additives, also could absorb UVA, UVB etc.