Optical Brightener ER-II for Polyester | C.I. Fluorescent Brightener 199:1 | CAS No. 13001-38-2

Short Description:

Optical Brightener ER-II (C.I. Fluorescent Brightener 199:1, CAS 13001-38-2) is a fluorescent whitening agent primarily used for polyester fibers and compatible polyester blended fabrics. It helps reduce unwanted yellowish tones and improves the perceived whiteness, brightness and visual appearance of treated textile materials.

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Key Features

Suitable for Polyester Fibers

Optical Brightener ER-II is particularly suitable for fluorescent whitening and brightening of polyester fibers and related polyester textile materials.

Suitable for Polyester Blends

ER-II can be used in compatible polyester blended fabrics, including polyester/cotton, polyester/wool and polyester/hemp blends.

Effective Optical Brightening

ER-II provides a bluish fluorescent shade that helps compensate for unwanted yellowish tones and improves the perceived whiteness and brightness of compatible textile materials.

Good Sublimation Fastness

Industrial ER-II technical information reports good fastness to sublimation, making it suitable for compatible polyester textile processing applications.

Suitable for Textile Brightening Formulations

ER-II can also be used as a raw material for preparing paste-form brightening agents used in textile dyeing applications.

Product Information

Item	Information
Product Name	Optical Brightener ER-II
C.I. Name	C.I. Fluorescent Brightener 199:1
CAS No.	13001-38-2
Chemical Name	1-(2-Cyanostyryl)-4-(4-cyanostyryl)benzene
Molecular Formula	C24H16N2
Molecular Weight	332.4
Main Applications	Polyester fibers and polyester blended fabrics