Uvitex BAC; Fluorescent Brightener 363; C.I. Fluorescent Brightener 363
CAS: 95078-19-6
Category: Organic Intermediates
| Purity | Industrial Grade ≥98%; High Purity Grade ≥99%; Textile/Plastic Grade ≥99% |
| Molecular Formula | C40H40N12O8S2 |
| Molecular Weight | 912.96 |
| Appearance | Light yellow to yellow-green crystalline powder; odorless; exhibits strong blue-violet fluorescence under ultraviolet light |
| Packaging | 25 kg fiber drums with polyethylene inner bags; 500 g, 1 kg, 5 kg aluminum foil bags or HDPE containers for laboratory and specialty applications |
| Testing Indicators | Appearance — Visual inspection; Fluorescence intensity — Spectrofluorometric measurement; Identification — FTIR spectroscopy and UV-Vis absorption spectrum; Purity — HPLC analysis; Melting point — Differential scanning calorimetry (DSC); Moisture content — Karl Fischer titration; Ash content — Gravimetric method; Sulfur and nitrogen content — Elemental analysis; Color strength — Standard comparison method; Thermal stability — TGA analysis. |
| Storage Notes | Store in a cool, dry, well-ventilated place away from direct sunlight and heat sources. Keep containers tightly sealed and protected from moisture. Avoid prolonged exposure to strong light and high temperatures. Store separately from strong oxidizing agents. |
| Lead Time | 10 days |
Uvitex BAC (C.I. Fluorescent Brightener 363) is a high-performance fluorescent whitening agent mainly used to improve the brightness and whiteness of polymer materials, textiles, coatings, inks, detergents, and paper products. It absorbs ultraviolet light and converts it into visible blue fluorescence, compensating yellowish tones and enhancing visual whiteness. It is widely applied in polyester fibers, plastics, synthetic fibers, coatings, and printing industries.