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HomeProduct name listCitrazinic acid

Citrazinic acid

Synonym(s):2,6-Dihydroxyisonicotinic acid;2,6-Dihydroxypyridine-4-carboxylic acid;Citrazinic acid

  • CAS NO.:99-11-6
  • Empirical Formula: C6H5NO4
  • Molecular Weight: 155.11
  • MDL number: MFCD00006274
  • EINECS: 202-731-2
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-08-26 21:18:56
Citrazinic acid Structural

What is Citrazinic acid?

Chemical properties

yellow powder

The Uses of Citrazinic acid

2,6-Dihydroxypyridine-4-carboxylic acid (citrazinic acid) was used to prepare 2,6-dibromo-4-(hexoxymethyl)pyridine. It was also used to synthesize the derivatives of oxazinones and pyrimidinones.

The Uses of Citrazinic acid

2,6-Dihydroxypyridine-4-carboxylic acid was used to prepare 2,6-dibromo-4-(hexoxymethyl)pyridine. It was also used to synthesize the derivatives of oxazinones and pyrimidinones.

Definition

ChEBI: CITRAZINIC ACID is an aromatic carboxylic acid and a member of pyridines.

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.]

Properties of Citrazinic acid

Melting point: >300 °C(lit.)
Boiling point: 278.88°C (rough estimate)
Density  0.65 g/cm3
refractive index  1.5423 (estimate)
storage temp.  Inert atmosphere,2-8°C
solubility  practically insoluble
pka 2.54±0.20(Predicted)
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 Citrazinic acid (99-11-6)

Safety information for Citrazinic acid

Signal word Warning
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H315:Skin corrosion/irritation
H319:Serious eye damage/eye irritation
H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Computed Descriptors for Citrazinic acid

InChIKey CSGQJHQYWJLPKY-UHFFFAOYSA-N

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