OB-ER-II
Optical brightener ER-II has bluish color shade with high whitening brightening effect and excellent fastness to sublimation. Mainly used as whitening agent for polyester fiber, as well the raw material of making paste form brightening agent in textile dyeing.
Key Features
Technical Specifications
| C.I. NO. | C.I. 199:1 |
| CAS Number | 13001-38-2 |
| Appearance | Yellow powder |
| Purity | ≥99% |
| Melting Point | 183-185°C |
| Molecular Formula | C24H16N2 |
Physical Data & Fastness Properties
| Shade/Tone | Bluish |
| Max Absorption Wavelength | 369nm |
| Heat Resistance | 300°C |
| Light Fastness | Good |
| Weather Fastness | Excellent |
Application Fields
This product is widely used in the following application fields, providing excellent coloring performance and durability:
- Polyester fiber whitening
- Textile dyeing (paste form brightening agent)
Usage Instructions
Mainly used as whitening agent for polyester fiber, as well the raw material of making paste form brightening agent in textile dyeing.
Frequently Asked Questions
What is OB-ER-II used for?
OB-ER-II is mainly used for transparent coloring of Polyester fiber whitening, Textile dyeing (paste form brightening agent), and can also be used for masterbatch production.
What are the key properties of OB-ER-II?
OB-ER-II offers a heat resistance of 300°C, and has light fastness rated Good.
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