CAS: 4404-43-7
Молекулярная формула: C40H44N12O10S2
Молекулярный вес: 916,98
EINECS: 224-548-7
Синонимы: CALCOFLUOR WHITE ST; CI 40622; Флуоресцентный отбеливатель28,Calcofluor White M2R, TinopalUNPA-GX; V56; Optiblanc NL; 2,5-Бис(5-тертутил-2-бензоксазлил) фиофен; 5-триазин-2-ил]амино]–6- (фениламино)-3; флуоресцентный осветлитель c.i.28; Флуоресцентный осветлитель (OB); TINOPAL UNPA-GX; TINOPAL LPW
Fluorescent Brightener 28 CAS 4404-43-7 （CAS 4193-55-9）is a high-efficiency, bis-triazinylaminostilbene-based optical brightening agent (OBA). It absorbs ultraviolet light (300-400 nm) and re-emits it as intense blue-violet fluorescence (400-500 nm), effectively masking the inherent yellowness of substrates and producing a bright, visually white appearance. Fluorescent Brightener 28 is particularly valued in polymer and coating applications for its excellent thermal stability and compatibility.
FLUORE CENT BRIGTENER 28 светло-желтый порошок без запаха, растворим в алканах, жирах, минеральных маслах, парафине и большинстве органических растворителей. Максимальное значение поглощения в спектре составляет 375 мм (в этаноле), а максимальная длина волны излучения - 435 нм (в этаноле).
| ПРЕДМЕТ | Промышленный Сорт |
| Внешний вид | Yellow-greenish powder |
| Белизна | Correspond to standard ±1.5 |
| E Value | 510-550 |
| Содержание влаги | ≤5% |
(1) Plastics Industry: Fluorescent Brightener 28 CAS 4193-55-9 widely used as a whitening agent for thermoplastics such as PVC, PP, PE, ABS, PS, and engineering plastics to enhance brightness and whiteness.
(2) Coatings & Paints: An effective brightener for architectural paints, industrial coatings, automotive finishes, and UV-curable systems.
(3) Synthetic Fibers: Fluorescent Brightener 28 CAS 4193-55-9 used in the spin finishing or mass pigmentation of polyester, nylon, and acetate fibers to achieve brilliant whiteness.
(4) Inks & Masterbatches: Key additive in specialty printing inks and white masterbatches for consistent whitening performance.
(5) Paper & Detergents: Fluorescent Brightener 28 CAS 4193-55-9 applied in high-quality paper coating and as an optical brightener in some industrial detergent formulations.
(1) High Whitening Efficiency: Provides intense blue-white fluorescence with low addition levels (typically 0.01%-0.1%).
(2) Excellent Thermal Stability: Withstands typical polymer processing temperatures up to 250-300°C without significant degradation.
(3) Good Light Fastness: Offers reasonable resistance to fading under long-term UV exposure.
(4) Broad Polymer Compatibility: Compatible with a wide range of polymer matrices and resin systems.
(5) Easy to Disperse: Can be readily incorporated into polymers via melt compounding or into liquid systems via high-speed dispersion.
Обычно упаковывается в 25 кг / барабан, а также может быть выполнена индивидуальная упаковка.
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