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4,4-Diaminostilbene-2,2-disulfonic acid Trade name: DSD acid Molecular formula: C14H14N2O6S2Molecular weight: 370.4 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
Specification
Item | Index |
(1)Appearance dry/wet | light yellow powder/light yellow cream |
(2)Dry product total amino value(gross dry sample)% ≥ | 96.0 |
(3)Degree of pigmentation(EOD) ≤ | 0.15 |
(4)Content of alkali insolubles (gross cream )% ≤ | 0.08 |
(5)Benzyl compound(gross sample)% ≤ | 0.25 |
(6)Ash content% ≤ | 2.5 |
Main use: In the manufacture of fluorescent brighteming agent,Chrysophenine G and Direct Yellow R, also as pesticides Packing: dry product: in 25kg woven bags or upon clients' request;
wet product: in 40kg woven bag or upon clients' request.
DSD acid /4,4-Diaminostilbene-2,2-disulfonic acid