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CAS No 81-11-8 , 5-amino-2-[(E)-2-(4-amino-2-sulfophenyl)ethenyl]benzenesulfonic acid

  • Name: 5-amino-2-[(E)-2-(4-amino-2-sulfophenyl)ethenyl]benzenesulfonic acid
  • Synonyms: Tinopal BHS;Amsonsaeure; Diaminostilbenedisulfonic acid; DASD; Flavonic acid;5-amino-2-[(E)-2-(4-amino-2-sulfophenyl)ethenyl]benzenesulfonic acid; 81-11-8; 4,4'-Diaminostilbene-2,2'-disulfonic acid;
  • CAS Registry Number:
  • Transport: UN 2583
  • Melting Point: >325 ºC
  • Density: 1.662 g/cm3
  • Refractive index: 1.726
  • Water Solubility: <0.1 G/100 ML AT 23 ºC
  • Safety Statements: R34
  • Hazard Symbols: C: Corrosive;
  • EINECS: 201-325-2
  • Molecular Weight: 370.40076
  • InchiKey: REJHVSOVQBJEBF-OWOJBTEDSA-N
  • InChI: InChI=1S/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)/b2-1+
  • Risk Statements: S22;S26;S36/37/39;S45
  • Molecular Formula: C14H14N2O6S2
  • Molecular Structure:CAS No:81-11-8 5-amino-2-[(E)-2-(4-amino-2-sulfophenyl)ethenyl]benzenesulfonic acid
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81-11-8 4,4'-Diaminostilbene-2,2'-disulfonic acid

  • 4,4'-Diaminostilbene-2,2'-disulfonic acid
  • China PMIDA AGROCHEMICAL CO.,LTD [Manufacturer]
  • Tel: +86-023-67030808-8010
  • Fax: +86-023-67030809
  • Address: 17F,Venus Science Incubate Center,No.60 Xingguang Road,New North Zone401121 ChongqingCHINA Chongqing,China
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81-11-8 4,4'-Diaminostilbene-2,2'-disulfonic acid

  • 4,4'-Diaminostilbene-2,2'-disulfonic acid
  • China Shanghai Rainbow Chemistry Co., Ltd. [Manufacturer]
  • Tel: +86-21-64968086
  • Fax: +86-21-64968086
  • Address: Room 128, Building B, No. 8 Lane 1305, Huajing Road, Xuhui District, Shanghai, P.R. China 200000 Shanghai CHINA Shanghai,China
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81-11-8 4,4'-Diaminostilbene-2,2'-disulfonic acid, 97%

  • 4,4'-Diaminostilbene-2,2'-disulfonic acid, 97%
  • Belgium Alkemi [Manufacturer]
  • Tel: +32 9 340 49 49
  • Fax: +32 9 340 49 47
  • Address: Poststraat, 82 B-9160 Lokeren Belgium ,Belgium
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81-11-8 4,4'-DIAMINOSTILBENE-2,2'-DISULFONIC ACID

  • 4,4'-DIAMINOSTILBENE-2,2'-DISULFONIC ACID, 97%
  • United States INTERNATIONAL LABORATORY LIMITED [Manufacturer]
  • Tel: ( 650 ) 278-9963
  • Fax: ( 650 ) 589-2786
  • Address: 1067 SNEATH LN SAN BRUNO CA 94066, USA SAN BRUNOUNITED STATES SAN BRUNO,United States
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81-11-8 4,4-Diamino Stilbene-2,2-Disulphonic Acid

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81-11-8 4,4'-Diaminodiphenylethylene-2,2'-disulfonic acid

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81-11-8 Amsonic Acid

  • China Betapharma(Shanghai)Co., Ltd. []
  • Tel: +86-(21)-33538380
  • Fax: +86-(21)-32082820
  • Address: No.17#-6D. 830 Lane, Maotai Road, Shanghai 200336, ,China
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81-11-8 4,4'-Diaminodiphenylethylene-2,2'-disulfonic acid

  • China Hebei Fulong Import & Export Co., Ltd. [Manufacturers]
  • Tel: +86-311-87795612
  • Fax: 86-311-87709298
  • Address: 15A19 ZHONGYUAN BUILDING, 368 YOUYI NORTH STREET, SHIJIAZHUANG 050070, HEBEI, CHINA Shijiazhuang,HebeiChina
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81-11-8 4,4-Diamino Stilbene-2,2-Disulphonic Acid

  • China Jinan Haohua Industry Co., Ltd. [, Manufacturer]
  • Tel: +86-531-55569255
  • Fax: +86-531-55569299
  • Address: 40 Huayuan Rd, Jinan, Shandong 250100, jinan,shandongChina
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81-11-8 Amsonic Acid

  • United States Parchem Trading [Manufacturer]
  • Tel: 914.654.6800
  • Fax: 914.654.6899
  • Address: Parchem Trading Ltd.
    415 Huguenot Street
    New Rochelle, NY 10801 ,United States
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References of 5-amino-2-[(E)-2-(4-amino-2-sulfophenyl)ethenyl]benzenesulfonic acid
Title: Amsonic Acid
CAS Registry Number: 81-11-8
CAS Name: 2,2¢-(1,2-Ethenediyl)bis[5-aminobenzenesulfonic acid]
Synonyms: 4,4¢-diamino-2,2¢-stilbenedisulfonic acid
Molecular Formula: C14H14N2O6S2
Molecular Weight: 370.40
Percent Composition: C 45.40%, H 3.81%, N 7.56%, O 25.92%, S 17.31%
Literature References: Prepn: Bender, Schultz, Ber. 19, 3234 (1886); H. E. Fierz-David, L. Blangey, Grundlegende Operationen der Farbenchemie (Springer-Verlag, Vienna, 7th ed., 1947) p 161; Spiegler, US 2784220 (1957 to du Pont).
Properties: Yellow needles; very slightly sol in water. Forms sparingly water-sol, crystalline salts with many bisquaternary ammonium bases.
Use: In manuf of dyes, bleaching agents.