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Brightener brightening agent fabric brightening agent manufacturer optical brightener 4bk optical brightening agent 4bk whitening agent for cotton fabric us $3.00$3.50 / kilogram

Optical brighteners for plastic industry. to satisfy the requests and needs of our regarded customers, we exchange and supply excellent scope of optical brightener plastics for plastic industry.all the offered specialists are broadly used to accumulate out intrinsic yellowness paints, inks, plastics, photographic arrangements and filaments.

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.

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.

We're an enterprise that export wholesale brown organic pigments for water based ink in Vietnam to China, we're authorized by the relevant state registratio. Main wholesale brown organic pigments for water based ink in Vietnam and sell to many regions in China, item accessible upon request. We have the spirit of "customer initial, honesty first" principle, using a variety of enterprises established long-term cooperative relationship.


We're an enterprise that export wholesale brown organic pigments for water based ink in Vietnam to China, we're approved by the relevant state registratio. Major wholesale brown organic pigments for water based ink in Vietnam and sell to many regions in China, solution out there upon request. We have the spirit of "customer 1st, honesty first" principle, having a variety of enterprises established long-term cooperative partnership.

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