DSD acid

CAS NO: 81-11-8
EC NO: 201-325-2
Molecular Formula: C14H14N2O6S2
Molecular Weight: 370.4008
Specification:
InChI: InChI=1/C14H14N2O6S2/c15-11-5-3-9(13(7-11)23(17,18)19)1-2-10-4-6-12(16)8-14(10)24(20,21)22/h1-8H,15-16H2,(H,17,18,19)(H,20,21,22)
Product description:
Chemical name:4,4’-Diaminostilbene-2,2’-disulfonic acid
Structural formula:

Chemical formula: C14H14N2O6S2
Molecular weight: 370.4
CAS NO.:81-11-8
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
Quality index:
Item Index
(1)Appearance dry/wet light yellow powder/light yellow cream
(2)Dry product total amino value(gross dry sample)% ≥95.0
(3)Degree of pigmentation(EOD) ≤0.12
(4)Content of alkali insolubles (gross cream )% ≤0.08
(5)Benzyl compound(gross sample)% ≤ 0.25
(6)Ash content% ≤2.2
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.
Synonyms: 2,2'-(1,2-Ethylenediyl)bis(5-aminobenzenesulfonic acid); Amsonic acid;4,4'-Diaminostilbene-2,2'-Disulfonic Acid;2,2'-ethene-1,2-diylbis(5-aminobenzenesulfonic acid);4,4'-Diamino-2,2'-stilbenedisulfonic acid;
Molecular Structure: 4,4'-Diaminodiphenylethylene-2,2'-disulfonic acid 81-11-8