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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.

We are one of the top-notch manufacturer, exporter, trader and importer of a comprehensive range of industrial inks. our range includes water base flexographic ink, water base shiner, solvent base flexographic ink, pigment emulsion paste, binding gum and paste, basic dyes and optical whitening agent that is formulated using high grade base material.we have more than …

As a optical brightener agent factory, we can export you optical brightener agent ob, ob-1, fp-127, cbs-x, er, 4bk, mst, swn. oba powder can be used for textile dyes, plastic, detergent and paper industry. more product please view hifactory.

professional blue 15 1 pigment for pvc manufacturer with years's experience, from China.We mainly supply professional blue 15 1 pigment for pvc with top quality and competitive value.we've a professional professional blue 15 1 pigment for pvc product designers.Our item is by way of the national specialist certification.


We are an enterprise that export professional blue 15 1 pigment for pvc to China, we're authorized by the relevant state registratio. Key professional blue 15 1 pigment for pvc and sell to numerous regions in China, solution offered upon request. We've the spirit of "customer initial, honesty first" principle, having a number of enterprises established long-term cooperative connection.

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