Optical Brightener ER-I for Polyester & Plastics | C.I. Fluorescent Brightener 199 | CAS No. 13001-39-3
Key Features
Suitable for Polyester Fibers
Optical Brightener ER-I is particularly suitable for the fluorescent whitening and brightening of polyester fibers and related polyester materials.
Suitable for Plastic Applications
ER-I can also be used in compatible plastic systems, including polyethylene (PE) and polypropylene (PP), where improved whiteness and brightness are required.
Effective Optical Brightening
ER-I helps compensate for unwanted yellowish tones through blue-violet fluorescence, improving the perceived whiteness and brightness of compatible materials.
Suitable for Polyester Processing
ER-I can be used in compatible polyester processing applications, including polyester chips and recycled polyester materials.
Broad Synthetic Material Applications
ER-I is suitable for compatible synthetic material applications where optical brightening and improved visual appearance are required.
Product Information
| Item | Information |
|---|---|
| Product Name | Optical Brightener ER-I |
| C.I. Name | C.I. Fluorescent Brightener 199 |
| CAS No. | 13001-39-3 |
| Chemical Name | 1,4-Bis(2-cyanostyryl)benzene |
| Molecular Formula | C24H16N2 |
| Molecular Weight | 332.4 |
| Main Applications | Polyester fibers and plastics |
Typical Applications
Polyester Fibers
Optical Brightener ER-I is particularly suitable for polyester fibers where improved optical whiteness and brightness are required.
Polyester Materials
ER-I can be used in compatible polyester materials and processing systems, including applications involving polyester chips and recycled polyester materials.
Polyethylene (PE)
ER-I can be used in compatible polyethylene applications to improve perceived whiteness and brightness and reduce unwanted yellowish tones.
Polypropylene (PP)
ER-I can also be used in compatible polypropylene applications where fluorescent whitening and improved visual brightness are required.
Packaging & Customized Options
Regular Packaging
Packaging options are available according to product grade and customer requirements.
Customized Product Options
Customized ER-I options are available based on specific application requirements, processing conditions and performance objectives.








