Fluorescent Brightener 28 CAS 4404-43-7

CAS:4404-43-7
الصيغة الجزيئية:C40H44N12O10S2
الوزن الجزيئي:916.98
EINECS:224-548-7

المرادفات:CALCOFLUOR الأبيض ST; CI 40622; الفلورسنت Brightener28,Calcofluor الأبيض M2R, TinopalUNPA-GX; V56; Optiblanc NL; 2.5-مكررا(5-tertbutyl-2-benzoxazlyl)phiophene; 5-triazin-2-يل]الأمينية]–6-(phenylamino)-3; c.أنا.fluorescentbrighteningagent28; Fluorescentbrightener(OB); TINOPAL إدارة بريد الأمم المتحدة-GX; TINOPAL LPW

ما هو منير الفلورسنت 28 CAS 4404-43-7？

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 المائة BRIGTENER 28 ضوء أصفر مسحوق عديم الرائحة, قابل للذوبان في الألكانات, الدهون, الزيوت المعدنية, البارافين, و معظم المذيبات العضوية. أقصى قيمة امتصاص الطيف هو 375mm (في الإيثانول), والحد الأقصى للانبعاثات الطول الموجي هو 435nm (في الإيثانول).

مواصفات

البند	الصف الصناعية
المظهر	Yellow-greenish powder
البياض	Correspond to standard ±1.5
E Value	510-550
محتوى الرطوبة	≤5%

التطبيق

(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.