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Optical brightener OB

CAS No. 7128-64-5

Fluorescent brightener OB can be widely used in PVC, PS, ABS, PE, PP and other plastics. It has been widely used in China due to its superior fluorescent whitening effect, good thermal stability and few added amounts. One of the fluorescent whitening agents. It is also suitable for whitening of polyester fibers, paints, paints, inks and acrylics. Fluorescent whitening agent OB can be used in combination with dyes to produce a particular brightness, which is particularly effective in color formulations.

Technical Details

Product Name Optical brightener OB
Chemical Name
bis-Benzoxazolylderivative;C.I.Fluorescentbrightener184;C.I.Fluorescentbrighteningagent184;
FluorescentbrighteChemicalbookningagent184;FluorescentBrightenerOBC.I.184;
2,2′-(2,5-Thienediyl)bis[5-(2-methyl-2-propanyl)-1,3-benzoxazole]
 Purity  99.5%
Appearance light yellow crystalline powder
Molecular weight 430
Melting point 201-203 ° C
CAS 7128-64-5
EINECS 230-426-4
C.I.NO. C.I.184
Molecular Formula C26H26N2O2S
Use Scope of application for thermoplastics, PVC, PE, PP, PS, ABS, SAN, SB, CA, PA, PMMA,

PET,acrylic resin, paints, coatings, and inks.

Focus on Optical Brightener Since 1990.

Full Solution for Bright Process
Customizable Formula Based on Your Demand

High purity & Low cost

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