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Optical brightening agent / optical brightener 4bk c.i. 113: optical brightener 4bk c.i. 113: c.i. 113: cas 12768-92-2: structure: stilbene bistriazine derivative: moisture: 5%max: appearance: slight yellow uniform powder: shade:slight bluish: strength: 100±3%: fineness(120 meshes residue): 5%max: application: mainly be used in whitening of ...

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.

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Oba speciality chemicals is a leading fluorescent whitening agent, fluorescent whitening agent manufacturers, fluorescent whitening agent exporters & fluorescent whitening agent suppliers in ahmedabad, gujarat, india.

We attach value to innovation, especially with patents of China on excellent quality KSN fluorescent brightening agent for white masterbatch, its superb technology has reached the international sophisticated level, and has a high reputation within the excellent quality KSN fluorescent brightening agent for white masterbatch industry. Our group not only has excellent researchers and business nationwide sales and service network, but additionally are China shoppers specified brand companies.


We're an enterprise that export excellent quality KSN fluorescent brightening agent for white masterbatch to China, we're approved by the relevant state registratio. Key excellent quality KSN fluorescent brightening agent for white masterbatch and sell to various regions in China, solution readily available upon request. We have the spirit of "customer first, honesty first" principle, with a quantity of enterprises established long-term cooperative relationship.

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