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  • Product Name:   Citrazinic acid
  • Synonyms:   1,2-dihydro-6-hydroxy-2-oxo-4-pyridinecarboxylicaci;1,2-Dihydro-6-hydroxy-2-oxo-4-pyridinecarboxylicacid;1,2-dihydro-6-hydroxy-2-oxo-isonicotinicaci;2,6-Dihydroxy-4-pyridinecarboxylic acid;2,6-dihydroxy-4-Pyridinecarboxylicacid
  • CAS No.:   99-11-6
  • Molecular Formula:   C6H5NO4
  • Molecular Weight :   155.11
  • Specification :   98%
  • Place of Origin:   China
  • Appearance :   
  • Document :   Download

Description of Citrazinic acid



Citrazinic acid Chemical Properties


Melting point  >300 °C(lit.)


Boiling point  278.88°C (rough estimate)


density  0.65 g/cm3


refractive index  1.5423 (estimate)


storage temp.  Store below +30°C.


solubility  practically insoluble


form  Powder


color  Yellow


PH 3.1-3.5 (100g/l, H2O)(slurry)


Water Solubility  practically insoluble


Merck  14,2325


BRN  383736


InChIKey CSGQJHQYWJLPKY-UHFFFAOYSA-N


CAS DataBase Reference 99-11-6(CAS DataBase Reference)


NIST Chemistry Reference Isonicotinic acid, 2,6-dihydroxy-,(99-11-6)


EPA Substance Registry System 4-Pyridinecarboxylic acid, 1,2-dihydro-6-hydroxy-2-oxo- (99-11-6)




Safety Information


Hazard Codes  Xi


Risk Statements  36/37/38


Safety Statements  26-36-36/37/39-22


WGK Germany  1


RTECS  NS1400000


TSCA  Yes


HS Code  29333999




Citrazinic acid Usage And Synthesis


Chemical Properties yellow powder


Purification Methods The acid is normally a yellow powder with a greenish shade, but is white when ultra pure and turns blue on long standing. It is insoluble in H2O but slightly soluble in hot HCl and soluble in alkali or carbonate solutions. It is purified by precipitation from alkaline solutions with dilute HCl, and dried in a vacuum over P2O5. The ethyl ester has m 232o (evacuated tube) and a pKa of 4.81 in MeOCH2CH2OH [IR: Pitha Coll Czech Chem Comm 28 1408 1963]. [Beilstein 22/7 V 24.]




Citrazinic acid Preparation Products And Raw materials


Raw materials Ammonium formate-->LIMONIN(SH)-->Triethyl citrate-->TRIMETHYL CITRATE


Preparation Products 2-BROMO-6-ETHOXYPYRIDINE-4-CARBOXYLIC ACID


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