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CAS 128-42-7

:

4,4′-Dinitro-2,2′-stilbenedisulfonic acid

Description:
4,4′-Dinitro-2,2′-stilbenedisulfonic acid, commonly referred to as DNSA, is an organic compound characterized by its complex structure featuring two nitro groups and sulfonic acid functionalities attached to a stilbene backbone. This compound is typically a yellow crystalline solid, known for its solubility in water and various organic solvents, which makes it useful in various chemical applications. DNSA is primarily utilized as a dye intermediate and in the synthesis of other chemical compounds due to its reactive functional groups. The presence of nitro groups contributes to its electron-withdrawing properties, enhancing its reactivity in electrophilic substitution reactions. Additionally, the sulfonic acid groups impart strong acidic characteristics, making it a strong acid in aqueous solutions. Its applications extend to the fields of analytical chemistry, where it can be used as a reagent for detecting certain metal ions. However, due to its potential toxicity and environmental impact, handling and disposal must be conducted with care, adhering to safety regulations.
Formula:C14H10N2O10S2
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
InChI key:InChIKey=UETHPMGVZHBAFB-UHFFFAOYSA-N
SMILES:S(=O)(=O)(O)C1=C(C=CC2=C(S(=O)(=O)O)C=C(N(=O)=O)C=C2)C=CC(N(=O)=O)=C1
Synonyms:
  • 2,2'-ethene-1,2-diylbis(5-nitrobenzenesulfonic acid)
  • 4,4-Dinitrostilbene-2,2-disulfonic acid
  • Dinitrostilbenedisulfonic acid
  • 2,2′-(1,2-Ethenediyl)bis[5-nitrobenzenesulfonic acid]
  • Benzenesulfonic acid, 2,2′-(1,2-ethenediyl)bis[5-nitro-
  • 4,4′-Dinitro-2,2′-stilbenedisulfonic acid
  • 4,4'-Dinitrostilbene-2,2'-Disulfonic Acid
  • 2,2′-Stilbenedisulfonic acid, 4,4′-dinitro-
  • sodium 5-nitro-2-[2-(4-nitro-2-sulfophenyl)ethenyl]benzenesulfonate
  • Nitroflavonic acid, 4,4'-Dinitrostilbene-2,2'-disulfonic acid
  • See more synonyms
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