Optical brightener brightening colors or mask yellowing by optically yield a brighter, fresher appearance. It’s synonym name OBA which is also known as fluorescent whitening agent(FWA) or fluorescent brightening agent(FBA).
Typical optical brightener for textiles are ER-I, ER-II. 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 powder or liquid form.
For more info and selection of optical brighteners for various applications, please check our blog.
Baoxu chemical offers optical brighteners for plastics, coating, detergent and textile fibers. and also provide coloring and anti-aging solutions. We’ve served more than 300 factories.
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