CAS:4404-43-7
Formula molecolare:C40H44N12O10S2
Peso Molecolare:916.98
EINECS:224-548-7
Sinonimi:CALCOFLUOR WHITE ST; CI 40622 Fluorescente Brightener28,Calcofluor White M2R, TinopalUNPA-GX; V56; Optiblanc NL; 2.5-Bis(5-tertbutyl-2-benzoxazlyl)phiophene; 5-triazin-2-il]ammino]–6-(fenilammino)-3; c.io.fluorescentbrighteningagent28; Fluorescentbrightener(OB); TINOPAL APNU-GX; TINOPAL ELETTRICA
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 CENTO BRIGTENER 28 luce a polvere di colore giallo, inodore, solubile in alcani, grassi, oli minerali, paraffina, e la maggior parte dei solventi organici. Il massimo valore di assorbimento dello spettro è 375mm (etanolo), e la massima lunghezza d'onda di emissione è di 435 nm (etanolo).
| VOCE | Grado Industriale |
| Aspetto | Yellow-greenish powder |
| Candore | Correspond to standard ±1.5 |
| E Value | 510-550 |
| Contenuto Di Umidità | ≤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.
Di solito confezionati in 25kg/drum,e può anche essere personalizzato pacchetto.
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