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Er-iichina manufacturers, factory, suppliers we often stay with the principle "quality very first, prestige supreme". we have been fully committed to supplying our consumers with competitively priced high-quality goods, prompt delivery and skilled provider for er-ii, ob for plastic, paint dyestuffs optical whitening, cbs-x(c.i. 351) for detergent, we adhere to client 1st, top quality …

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.

Molecular formula:c 18 h 15 cln 2 o 6 s molecular weight: 422.84 cas registry number:7023-61-2 manufacturing methods :2-amino-4-chloro-5-methylbenzenesulfonic acid diazotization, and 3-hydroxy-2-naphthoic acid coupling, and then into calcium salt. properties and applications:brilliant red, shallow blue light pink.purple red powder. insoluble in water and ethanol.

1,444 solvent based ink pigment products are offered for sale by suppliers on alibaba, of which pigment accounts for 17%, printing inks accounts for 14%. a wide variety of solvent based ink pigment options are available to you, such as ceramic pigments, coating pigment.

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