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4,4'-Diaminodiphenylethylene-2,2'-disulfonic acid

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  Post Date: Sep 18,2015
  Expiry Date: Mar 16,2016
  Detailed Description: Cas No. :81-11-8

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.

  CAS Registry Number:

81-11-8
  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 Formula: C14H14N2O6S2
  Molecular Weight: 370.4008
  Molecular Structure: 81-11-8 4,4'-Diaminodiphenylethylene-2,2'-disulfonic acid
  Hazard Symbols:  C:Corrosive;
  Risk Codes: R34:;
  Safety Description: S22:;
S26:;
S36/37/39:;
S45:;

  Company: Zhengzhou Meinl Chemical Co.,LTD.     [ China ]        
  Contact: Manager Duan
  Tel: 0371-56871707
  Fax: 0371-56871707
  Email: dqy@meinlchem.com
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