| Identification | Back Directory |  [Name]
  4-PYRIDINESULPHONIC ACID |  [CAS]
  5402-20-0 |  [Synonyms]
  NSC 5082 Pyridine-4-suL 4-Sulphopyridine TAK438 Impurity 30 4-Pyridinesulfonicaci 4-Pyridinesulfonicacid 4-PYRIDINESULPHONIC ACID PYRIDINE-4-SULFONIC ACID Pyridine-4-sulphonic acid 4-PYRIDINESULPHONIC ACID ISO 9001:2015 REACH |  [Molecular Formula]
  C5H5NO3S |  [MDL Number]
  MFCD00234082 |  [MOL File]
  5402-20-0.mol |  [Molecular Weight]
  159.16 |  
 | Chemical Properties | Back Directory |  [Melting point ]
  330℃ (DEC.) |  [density ]
  1.509 |  [storage temp. ]
  Inert atmosphere,2-8°C |  [pka]
  -2.85±0.50(Predicted) |  [InChI]
  InChI=1S/C5H5NO3S/c7-10(8,9)5-1-3-6-4-2-5/h1-4H,(H,7,8,9) |  [InChIKey]
  PTWLOSARXIJRRJ-UHFFFAOYSA-N |  [SMILES]
  C1=NC=CC(S(O)(=O)=O)=C1 |  
 | Hazard Information | Back Directory |  [Uses]
  4-Pyridinesulphonic acid is an organic synthetic reagent for the preparation of 4-dimethylaminopyridine and its derivatives. It is also involved in the preparation of hydrogen sensor elements. |  
  
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