Optical Brightener 4BK for Cotton & Polyester/Cotton Blended Fabrics | C.I. Fluorescent Brightener 87 | CAS No. 12768-91-1
Key Features
High Purity
Optical Brightener 4BK has a specified purity of 99%, providing consistent quality for compatible textile whitening applications.
Anionic Fluorescent Brightener
4BK is an anionic fluorescent whitening agent suitable for compatible textile processing systems.
Suitable for Cotton
Optical Brightener 4BK is suitable for cotton fabrics where enhanced optical whiteness and brightness are required.
Suitable for Polyester/Cotton Blended Fabrics
4BK can be used in compatible polyester/cotton blended fabric applications to improve perceived whiteness, brightness and overall textile appearance.
Enhanced Whiteness & Brightness
The product helps compensate for undesirable yellowish tones through fluorescent whitening, contributing to a cleaner and brighter appearance of treated fabrics.
Product Information
| Item | Information |
|---|---|
| Product Name | Optical Brightener 4BK |
| C.I. Name | C.I. Fluorescent Brightener 87 |
| CAS No. | 12768-91-1 |
| Appearance | Light yellow powder |
| Purity | 99% |
| Ionicity | Anionic |
| Main Applications | Cotton and polyester/cotton blended fabrics |
Technical Specifications
| Item | Specification |
|---|---|
| Appearance | Light yellow powder |
| Purity | 99% |
| Ionicity | Anionic |
| Water | ≤ 5% |
| Water Insoluble Content | ≤ 0.5% |
| Fineness (180 mesh) | ≤ 10% |
Typical Applications
Cotton Fabrics
Optical Brightener 4BK can be used in compatible cotton fabric processing to improve perceived whiteness, brightness and overall visual appearance.
Polyester/Cotton Blended Fabrics
4BK is suitable for compatible polyester/cotton blended fabric applications where enhanced optical brightness and improved fabric appearance are required.
Textile Whitening
The product can be incorporated into compatible textile whitening processes for cotton and polyester/cotton blended materials according to specific processing conditions and performance requirements.
Regular Packaging
Standard packaging is 25 kg per drum. Other packaging options can be customized according to customer requirements.
Customized Product Options
Customized 4BK solutions are available based on specific textile materials, processing conditions and performance requirements.
