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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


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


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


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