Product Data Sheet
Omnistab UV BP 4 – CAS: 4065-45-6
Date: Wednesday, Oct 7, 2026
Product Composition
| CAS number: | 4065-45-6 |
| Chemical name: | 2-Hydroxy-4-methoxybenzophenone-5-sulfonic acid |
| Moleculair formula: | C14H12O6S |
| Molecular weight (g/mol): | 308.00 |
Product Specification
| Content (%) | 99.50 min |
| Volatiles (%) | 3.00 max |
| Melting point/range (ºC) | 170.00 |
| Residue on ignition (%) | 0.10 max |
| Color Gardener (%) | 4.00 max |
| Specific Extinction (at 287 nm) | 460 min |
| Specific Extinction (at 324 nm) | 275 min |
| Odour | Faint characteristic |
| K-Value at 285 nm (l/g-cm) | 45.00 -50.00 |
| Ph, 1% aqueous solution @25˚C | 1.20 - 2.20 |
| Product form(s): | Powder |
| Packaging option(s) | Carton |
