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: 2024-12-18 14:08:52
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) |
 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 |
Citrazinic acid manufacturer
Anami Organics
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