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   ChemNet > CAS > 128-42-7 4,4'-dinitrostilbene-2,2'-disulphonic acid

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128-42-7 4,4'-dinitrostilbene-2,2'-disulphonic acid

product Name 4,4'-dinitrostilbene-2,2'-disulphonic acid
CAS No 128-42-7
Synonyms 4,4-Dinitrostilbene-2,2-disulfonic acid; 4,4'-Dinitrostilbene-2,2'-Disulfonic Acid; 2,2'-ethene-1,2-diylbis(5-nitrobenzenesulfonic acid); sodium 5-nitro-2-[2-(4-nitro-2-sulfophenyl)ethenyl]benzenesulfonate; 4,4-Diamino-2,2-stilbene-Disulfonic Acid
Molecular Formula C14H10N2O10S2
Molecular Weight 430.37
InChI InChI=1/C14H10N2O10S2.Na/c17-15(18)11-5-3-9(13(7-11)27(21,22)23)1-2-10-4-6-12(16(19)20)8-14(10)28(24,25)26;/h1-8H,(H,21,22,23)(H,24,25,26);/q;+1/p-1
EINECS 204-885-6
Molecular Structure 128-42-7 4,4'-dinitrostilbene-2,2'-disulphonic acid

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Description What is the chemical of 4,4-Diamino-2,2-stilbene-Disulfonic Acid ? Appearance: Orange-yellow powdery solid£» Assay:99%min by HPLC£» IR Identity: conform to standard£» HNMR£º conform to standard£» carbon spectrum: conform to standard£» Water by K. F.:0.5% max or as per the customer¡¯s request£» Loss on drying:0.5% max. or as per the customer¡¯s request£» =============================================================================== The main use of 4,4-Diamino-2,2-stilbene-disulfonic Acid is as a dye intermediate for producing DSD acid (3,3'-diamino-4,4'-dihydroxy stilbene-2,2'-disulfonic acid). DSD acid is an important precursor for synthesizing various direct dyes, acid dyes, and fluorescent brightening agents. ============================================================================== Synthesis Route: 4-Amino-2'-nitro diphenylamine-4'-sulfonic acid can be synthesized through the following steps: First, p-nitroanil-ine undergoes a coupling reaction with p-nitrodiphenyl ether. S...
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