Fluorescent Brightener 393 CAS 1533-45-5 Fluorescent Brightener OB-1. FBA393. Optical Brightener OB-1

Place of Origin: Shandong,China (Mainland)
Brand Name: MOSINTER
CAS No.: 1533-45-5
Molecular formula: C28H18N2O2
Molecular weight: 414.45
Melting Point: >300 °C(lit.)
Stability: Stable. Incompatible with strong oxidizing agents.
Flashing point: 285.1°C
Boiling point: 566.8°C at 760 mmHg
Vapour pressure: 2.79E-12mmHg at 25°C


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Product Description

Payment & Shipping Terms Supply Capacity
Payment Terms:L/C, T/T, WUProduction Capacity:200 Ton/Year
Min. Order:10 KilogramPacking:According to the...
Means of Transport:Ocean, Air, LandDelivery Date:within 7 days

Fluorescent Brightener 393 (CAS: 1533-45-5)




Yellow crystal powder

Melting point


Solidity content


Fineness of grains

≤120 meshes

Fluorescent Brightener 393 absorb high energy radiation in the ultraviolet to violet region (330nm-380nm) on the part of characteristic molecules and emit lower energy radiation in blue region in visible spectrum (400nm-450nm), which yields the counteracting the yellowing appearance. FWA should be transparent on the substrate and should not absorb the visible region of the spectrum. Many FWAs contain the structure of stilbene. Stilbene is an unsaturated hydrocarbon with the formula C6H5CH=CHC6H5. Other nucleus of FWAs are coumarin, imidazole, 1,3-diphenyl-2-pyrazolin, naphtalimid, benzoxazole and heteroaromatics. FWAs are used in thermoplastics, detergents, plastic films, fibers, papers, adhesives and leathers to enhance the appearance.2,2-(4,4-Diphenol vinyl) dibenzoxazol is a Fluorescent Whitening Agent specially suitable for shaping various kinds of plastics and their products under high temperature. It has an extra ideal whitening effect on polyester fibers as well as polyester fiber containing fabrics including polyester-cotton blend fabric. This whitening agent is equivalent to Eastobrite OB-1 made in Eastman USA.

Fluorescent Brightener 393 (CAS:1533-45-5) Fluorescent Brightener OB-1; FBA393; Optical Brightener OB-1;

Category: Other Chemical Products

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