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Direct Black 19

Direct Black 19

Category :

Dyestuffs and Pigments

CAS NO : 6428-31-5
EC NO : 229-208-1
Molecular Formula : C34H27N13Na2S2O7
Main Specifications :
Synonyms : C.I. 35255;C.I. Direct Black 19;C.I. Direct Black 19 (VAN);C.I. Direct Black 19, disodium salt;Direct Fast Black G;C.I.Direct Black 19;disodium (3E)-5-amino-6-[(E)-{4-[(E)-(2,4-diaminophenyl)diazenyl]phenyl}diazenyl]-3-(2-{4-[(E)-(2,4-diaminophenyl)diazenyl]phenyl}hydrazinylidene)-4-oxo-3,4-dihydronaphthalene-2,7-disulfonate;(3E)-5-amino-6-[(E)-{4-[(E)-(2,4-diaminophenyl)diazenyl]phenyl}diazenyl]-3-(2-{4-[(E)-(2,4-diaminophenyl)diazenyl]phenyl}hydrazinylidene)-4-oxo-3,4-dihydronaphthalene-2,7-disulfonic acid;Direct Black G;
Direct Black 19
Molecular Structure:Direct Black 19 6428-31-5
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Company：
    Hangzhou Dingsheng Chemical Co ., Ltd.
Contact：
   
Phone：
+86-571-85284775 85284792
Mobile phone：
Fax：
 +86-571-85183620
E-mail：
 sharpchem@vip.sina.com
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Address：
 Room 912, 2 Tents,Binjiang Xincheng Times Square,No.189 Fengqi Rd., Hangzhou,China
Zip Code：
 310009
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