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(1) fluorescent brightenening agent vbl is a typical representative of bis(triazinylamino)stilbene derivative. (2) it can be soluble in 80 times soft water and shows anion character and the ph value resistant to acid and alkali is 6-11 and the expected ph value of dyeing bath is 8-9.

Optical brightener cxt or o.b.a.71 for detergent powder , find complete details about optical brightener cxt or o.b.a.71 for detergent powder,optical brightener 71,fluorescent brightener cxt,o.b.a.71 from dyestuffs supplier or manufacturer-tianjin leading import & export co., ltd.

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Optical brighteners, optical brightening agents (obas), fluorescent brightening agents (fbas), or fluorescent whitening agents (fwas), are chemical compounds that absorb light in the ultraviolet and violet region (usually 340-370 nm) of the electromagnetic spectrum, and re-emit light in the blue region (typically 420-470 nm) by fluorescence.these additives are often used to enhance …

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