Dye & Pigment Intermediates DSD Acid

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Dye & Pigment Intermediates DSD Acid
Posting date : Nov 23, 2006
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32-
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HeBei Hua-chem Group --ProductIntroduction 4,4'-DIAMINOSTILBENE-2,2'-DISULFONIC ACID CAS 81-11-8 Physical and chemical properties: 1)Light yellow paste or powder,soluble in alcohol and ether insoluble in water, readily soluble in a aqueous solution of alkali 2)Easy be oxidated to red in air,it has properties of aromatic acid and aromatic amine Appearance light yellow paste or powder Contents of Amino(On tltal paste basis)% ≥45.0%min Contents of dry products(On basis of total dried sample)95.0%min Insoluble in Aikali(On total paste basis) 0.08%max Insoluble in Alkali(On basis of dried sample) 0.10%max Benzyl(On basis of total sample)0.25max Main usage:Used in manufacture of fluorescent whitening agent.Direct Chrysophenine G.Direct yellow R and used as insecticide. Packing:For powder:25Kg net poly-woven bags or as the customers' requirements. For paste:40Kg net poly-woven bags oras the customers' requirements.

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