4,4-Diaminostilbene-2,2-disulfonic acid

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1.Product name: DSD acid 2.Chemical name: 4,4-Diaminostilbene-2,2-disulfonic acid 3.Chemical formula: C14H14N2O6S2 4.Molecular weight: 370.4 5.CAS No.:81-11-8 6.HS Code:29215900.90 7.Property: 1)Light yellow cream or powder, soluble in ethanol and ether; insoluble in water, easily soluble in alkaline solution. 2)Can be easily oxidized into red; has the property of aromatic acid or aromatic amine 8.Quality index: 1)DSD Acid Dry Type: Appearance-------------------------------------------------light yellow powder total amino value(gross dry sample)%---------------95%min Chromaticity------------------------------------------------9 Content of alkali insolubles (gross cream )%------0.08%max Benzyl compound(gross sample)%------------------0.25% Moisture%---------------------------------------------------2.0%max Iron pm-------------------------------------------------------80max 2)DSD Acid Wet Type: Appearance-------------------------------------------------light yellow cream total amino value(gross dry sample)%---------------70%min Chromaticity------------------------------------------------9 Content of alkali insolubles (gross cream )%------0.05%max Benzyl compound(gross sample)%------------------0.25% Iron pm-------------------------------------------------------80max 9.Main use:DSD ACID use In the manufacture of fluorescent brighteming agent、Chrysophenine G and Direct Yellow R, also as pesticides 10.Packing: dry product: in 25kg woven bags or upon clients' request; wet product: in 40kg woven bag or upon clients' request.12MT/20FCL. Contact: sales01 at tj-yakete dot com ninayang2005 at gmail dot com

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Tianjin Yakete international trade co.,ltd.

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