Comprehensive Guide to Optical Brightener EBF
Optical brighteners have become essential in various industries, primarily due to their ability to enhance the brightness and whiteness of materials. Among these, Optical Brightener EBF (FBA 185) stands out as a versatile compound used in plastics, textiles, and more. With its unique chemical properties and applications, understanding Optical Brightener EBF is crucial for manufacturers looking to improve product aesthetics and performance. This guide aims to provide a thorough overview of Optical Brightener EBF, its applications, technical features, and usage guidelines.
Comparison of Optical Brightener EBF Types and Applications
| Type | Appearance | Melting Point (°C) | Purity (%) | Applications |
|---|---|---|---|---|
| Optical Brightener EBF | Light yellow crystal | 216-220 | ≥99 | Polyolefin plastics, ABS, organic glass |
| Fluorescent Brightener 185 | Pale yellow powder | 216-220 | 98.0 Min | Various plastics and textiles |
| OBA Optical Brightening Agent | Powder | Not specified | Not specified | Polyester and blended fabrics, plastics |
| Sinophor® EBF | Not specified | Not specified | Not specified | Textile whitening, dyeing processes |
| EBF (Powder Type) | Bright yellow powder | Not specified | Not specified | Whitening plastics, staple fibers |
Overview of Optical Brightener EBF
What is Optical Brightener EBF?
Optical Brightener EBF, also known as Fluorescent Brightener 185, is a chemical compound that absorbs ultraviolet light and re-emits it as visible blue light. This process enhances the brightness and whiteness of products, making it a popular choice in the manufacturing of various materials. Its chemical structure, 2,5-bis-(benzoxazol-2-)thiophene, contributes to its efficacy as a brightening agent.
Chemical Properties
Optical Brightener EBF has a CAS number of 12224-41-8 and a Color Index (C.I.) number of 185. It appears as a bright-colored light yellowish crystalline powder with a melting point ranging from 216°C to 220°C. Its high purity level (≥99%) ensures optimal performance in applications.
Applications
Optical Brightener EBF is widely used in:
- Polyolefin Plastics: Enhancing the brightness and whiteness of materials such as polyethylene and polypropylene.
- ABS Engineering Plastics: Improving the aesthetic qualities of acrylonitrile butadiene styrene plastics.
- Organic Glass: Increasing the visual appeal of acrylic and polycarbonate products.
- Textiles: Particularly in polyester and blended fabrics, EBF is effective in dyeing processes to achieve a bright finish.
Technical Features of Optical Brightener EBF
| Feature | Description |
|---|---|
| CAS Number | 12224-41-8 |
| C.I. Number | 185 |
| Melting Point | 216-220°C |
| Solubility | Insoluble in water, soluble in organic solvents |
| Light Fastness | 7-8 rating (excellent) |
| Usage Concentration | 0.02-0.8% (depends on application) |
Detailed Applications of Optical Brightener EBF
In Plastics
Optical Brightener EBF is extensively used in the plastics industry. It plays a vital role in enhancing the visual quality of various plastics. The brightening effect is particularly noticeable in polyolefin plastics, ABS engineering plastics, and organic glass. Manufacturers often use it in a concentration of 0.02-0.05% relative to the weight of the materials, ensuring a noticeable increase in brightness without compromising the material’s properties.
In Textiles
In the textile industry, EBF is utilized for its ability to improve the brightness of polyester and blended fabrics. It can be used in various dyeing methods, including high-temperature and high-pressure dip dyeing, as well as low-temperature absorption settings. The recommended usage concentration for textile applications is generally between 0.2-0.8% (o.w.f).
Stability and Performance
Optical Brightener EBF exhibits excellent stability under various conditions. It demonstrates resistance to light, washing, and chlorine bleaching, making it suitable for long-lasting applications. Additionally, it maintains good performance in hard water and alkaline environments, which is crucial for both plastic and textile manufacturing.
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Conclusion
Optical Brightener EBF is a powerful agent that enhances the brightness and whiteness of various materials, including plastics and textiles. Its exceptional properties, such as high purity, excellent light fastness, and stability, make it a preferred choice among manufacturers. By understanding its applications and technical features, businesses can leverage Optical Brightener EBF to improve product aesthetics and performance.
FAQ
What is Optical Brightener EBF used for?
Optical Brightener EBF is primarily used to enhance the brightness and whiteness of various materials, including polyolefin plastics, ABS engineering plastics, and textiles.
What is the chemical structure of Optical Brightener EBF?
The chemical structure of Optical Brightener EBF is 2,5-bis-(benzoxazol-2-)thiophene, which contributes to its fluorescent properties.
What is the recommended usage concentration for plastics?
For plastics, the recommended usage concentration of Optical Brightener EBF is typically between 0.02-0.05% relative to the weight of the materials.
How does Optical Brightener EBF perform in textiles?
In textiles, EBF is effective in dyeing polyester and blended fabrics, commonly used in concentrations of 0.2-0.8% (o.w.f) depending on the dyeing method.
Is Optical Brightener EBF stable in different conditions?
Yes, Optical Brightener EBF exhibits excellent stability to light, washing, chlorine bleaching, and hard water, making it suitable for long-lasting applications.
What is the melting point of Optical Brightener EBF?
Optical Brightener EBF has a melting point that ranges from 216°C to 220°C.
What are some alternative names for Optical Brightener EBF?
Optical Brightener EBF is also known as Fluorescent Brightener 185 and has the CAS number 12224-41-8.
Can Optical Brightener EBF be used in organic glass?
Yes, Optical Brightener EBF can enhance the brightness of organic glass products, improving their visual appeal.
What industries benefit from Optical Brightener EBF?
The plastics and textile industries are the primary beneficiaries of Optical Brightener EBF, utilizing it to improve product aesthetics and performance.
Where can I find more information on Optical Brightener EBF?
Detailed information about Optical Brightener EBF can be found on various chemical and additive supplier websites, such as www.additivesforpolymer.com, obachemical.com, and www.hqcmaterial.com, among others.
