Optical brightener (OB-1)
Zvinodiwa:
| Item | Standard |
| Chitarisiko | Yellowish green crystal powder kana Yellowish crystal powder |
| Melting point | 357-361℃ |
| Kuchena | ≥98.5% |
| Ruvara mumvuri | Bhuruu |
| Fineness | ≥300mesh |
| Mvura-inokurumidza kugutsikana | ≤0.5% |
Nyora meseji yako pano ugotitumira



