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CAS 23647-14-5

:

SPADNS

Description:
SPADNS, or 3-Amino-5-mercapto-1,2,4-triazole-1-sulfonic acid, is a chemical compound commonly used as a reagent in analytical chemistry, particularly in colorimetric assays for the determination of certain metal ions, such as lead and cadmium. It is characterized by its ability to form stable colored complexes with these metals, which can be quantitatively measured. SPADNS is typically a crystalline solid that is soluble in water, making it suitable for various aqueous applications. The compound features a triazole ring, which contributes to its reactivity and complexation properties. Additionally, SPADNS is known for its sensitivity and specificity in detecting metal ions, making it valuable in environmental monitoring and quality control processes. Safety precautions should be taken when handling SPADNS, as it may pose health risks if ingested or inhaled. Overall, SPADNS is an important tool in analytical chemistry for trace metal analysis.
Formula:C16H12N2O11S3·3Na
InChI:InChI=1S/C16H12N2O11S3.3Na/c19-12-7-11(31(24,25)26)5-8-6-13(32(27,28)29)15(16(20)14(8)12)18-17-9-1-3-10(4-2-9)30(21,22)23;;;/h1-7,19-20H,(H,21,22,23)(H,24,25,26)(H,27,28,29);;;
InChI key:InChIKey=UQSKFBMHJUNOEY-UHFFFAOYSA-N
SMILES:OC=1C2=C(C=C(S(=O)(=O)O)C1N=NC3=CC=C(S(=O)(=O)O)C=C3)C=C(S(=O)(=O)O)C=C2O.[Na]
Synonyms:
  • 1,8-Dihydroxy-2-[4-sulfophenylazo]-naphthalene-3,6-disulfonic acid
  • 2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-3-[(4-sulfophenyl)azo]-, trisodium salt
  • 2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-3-[(p-sulfophenyl)azo]-, trisodium salt
  • 2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-3-[2-(4-sulfophenyl)diazenyl]-, sodium salt (1:3)
  • 2-(4-Sulphophenylazo)chromotropic acid trisodium salt
  • 3-(4-Sulfophenylazo)-4,5-dihydroxynaphthalene-2,7-disulfonic acid trisodium salt
  • 4,5-Dihydroxy-3-(4-sulfophenylazo)-2,7-naphthalenedisulfonic acid, trisodium salt
  • 5-Hydroxy-4-Oxo-3-[(4-Sulfonatophenyl)Hydrazono]-3,4-Dihydronaphthalene-2,7-Disulfonate
  • Spadns
  • Sulphanilic acid azochromotrope
  • See more synonyms
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