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Typical optical brightener for textiles is er-i, er-ii, 4bk. er-i is also known as fluorescent brightener 199. it’s used in whitening and brightening polyester fiber. er-ii is also known as fluorescent brightener 199:1, used to whitening polyester, polyester/cotton, polyester/yarn, polyester/linen, and other blended fabrics. both cas number is 13001-39-3 and could be in …

The whitening effect of optical brightener agent could be estimated by visual method which better under the sunlight or measure by colorimeter. 3.light fastness there is no international standard for testing optical brightener lightfastness in plastics.most tests used din 54004 for reference.

Optical brightening agent 31# cas:12224-06-5 manufacturer, fluorescent brightener vbl supplier, optical brightening agent 31# producer from china, offering highest quality optical brightening agent vbl to global customers

Optical brightening agent er-ii by anyang general chemical is a non-ionic 1-(2-cyanostyryl)-4-(4-cyanostyryl)benzene. it is used in the whitening and brightening of coatings. optical brightening…

We attach value to innovation, especially with patents of China on Manufacturer for KCB brightener agent powder, its excellent technology has reached the international advanced level, and has a higher reputation inside the Manufacturer for KCB brightener agent powder industry. Our group not merely has excellent researchers and business nationwide sales and service network, but additionally are China prospects specified brand companies.


Manufacturer for KCB brightener agent powder Supplier having a high organization reputation,from China.Our items include:Manufacturer for KCB brightener agent powder Products are mainly exported to European countries,it really is well known in several nations.

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