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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 paper are vbl, bbu, hs, hst. vbl is also known as fluorescent brightener 85.

China optical whitening agentselect 2020 optical whitening agent products from verified china optical whitening agent manufacturers, suppliers on made-in-china.

Optical brightening agent er-iii cas no. 13001-40-6 chemical name: 1,4'-bis(2-cyanostyryl) benzole specifications appearance slight yellow greenish powder melting point 288-201 ℃ purity ≥99% moisture content ≤0.5 application optical brightener 199 is used to the whitening process of dacron, acetic fiber, polyamide fiber, blends of terylene-cotton etc.

China pigment red 57:1find detail solvent based ink, solvent based ink printers from xiamen azocolor co., ltd.

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