Optical Brightener OB for Plastics, Coatings & Inks | C.I. Fluorescent Brightener 184 | CAS No. 7128-64-5
Key Features
Broad Application in Plastics
Optical Brightener OB is suitable for a wide range of compatible plastic materials, including PE, PP, PVC, PS and ABS.
Suitable for Paints & Coatings
OB can be used in compatible paint and coating systems where improved brightness and correction of unwanted yellowish tones are required.
Suitable for Printing Inks
Optical Brightener OB can be used in compatible printing ink systems to enhance visual brightness and improve overall color appearance.
Effective Optical Brightening
OB helps compensate for unwanted yellowish tones through blue fluorescence, improving the perceived whiteness and brightness of finished products.
Fine Powder Grade
The supplied OB grade has a fineness specification of ≥ 400 mesh, providing a fine powder form for use in compatible formulations and processing systems.
Product Information
| Item | Specification |
|---|---|
| Product Name | Optical Brightener OB |
| C.I. Name | C.I. Fluorescent Brightener 184 |
| CAS No. | 7128-64-5 |
| Appearance | Pale yellow-green powder |
| Melting Point | 198–202°C |
| Purity | ≥ 99% |
| Color Shade | Blue |
| Fineness | ≥ 400 mesh |
| Water-Insoluble Content (%) | ≤ 0.5 |
Typical Applications
Plastics
Optical Brightener OB can be used in compatible plastics, including PE, PP, PVC, PS and ABS, to improve perceived whiteness and brightness and reduce unwanted yellowish tones.
Paints
OB can be incorporated into compatible paint systems where optical brightening and improved visual brightness are required.
Coatings
Optical Brightener OB is suitable for compatible coating systems where improved brightness and color appearance are desired.
Printing Inks
OB can be used in compatible printing ink systems to enhance visual brightness and overall color appearance.
Packaging & Customized Options
Regular Packaging
Packaging options are available according to product grade and customer requirements.
Customized Product Options
Customized OB options are available based on specific application requirements, formulations, processing conditions and performance objectives.







