Citraconic acid
Synonym(s):Methylmaleic acid
- CAS NO.：498-23-7
- Empirical Formula: C5H6O4
- Molecular Weight: 130.1
- MDL number: MFCD00078086
- EINECS: 207-858-7
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-03-10 21:10:33
What is Citraconic acid?
Chemical properties
white to light beige crystalline powder
The Uses of Citraconic acid
Citraconic acid is used in synthetic or copolymer oils, in treating metals for adhesion of polyolefins, and in thermoplastics.
The Uses of Citraconic acid
Citraconic acid is an important raw material and intermediate used in organic synthesis, pharmaceuticals, agrochemicals and dyestuff fields.
Definition
ChEBI: Citraconic acid is a dicarboxylic acid consisting of maleic acid having a methyl substituent at the 2-position. It has a role as a human metabolite. It is a dicarboxylic acid and a dicarboxylic fatty acid. It is functionally related to a maleic acid. It is a conjugate acid of a citraconate(2-).
Purification Methods
Steam distil and crystallise it from EtOH/ligroin. [Beilstein 2 H 768, 2 I 309, 2 II 652, 2 III 1938, 2 IV 2230.]
Properties of Citraconic acid
| Melting point: | 88-94 °C (lit.) |
| Boiling point: | 160.75°C (rough estimate) |
| Density | 1,62 g/cm3 |
| refractive index | 1.4502 (estimate) |
| storage temp. | Hygroscopic, -20°C Freezer, Under inert atmosphere |
| solubility | DMSO (Sparingly, Sonicated), Water (Slightly) |
| pka | pK1:2.29(0);pK2:6.15(+1) (25°C) |
| form | Crystalline Powder |
| color | White to light beige |
| Water Solubility | FREELY SOLUBLE |
| Sensitive | Hygroscopic |
| Merck | 14,2321 |
| BRN | 1722679 |
| Stability: | Hygroscopic |
| CAS DataBase Reference | 498-23-7(CAS DataBase Reference) |
| NIST Chemistry Reference | 2-Butenedioic acid, 2-methyl-, (Z)-(498-23-7) |
Safety information for Citraconic acid
| Signal word | Warning |
| Pictogram(s) |
 Skull and Crossbones Acute Toxicity GHS06  Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H301:Acute toxicity,oral H302:Acute toxicity,oral |
| Precautionary Statement Codes |
P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P270:Do not eat, drink or smoke when using this product. P321:Specific treatment (see … on this label). P405:Store locked up. P501:Dispose of contents/container to..… |
Computed Descriptors for Citraconic acid
New Products
Cyclopentane-1,2-dione 2,6-Dibromoaniline (RS)-beta-Amino-beta-(4-bromophenyl)propionic acid 1-AMino-cyclobutaneMethanol HCl TETRABUTYLAMMONIUM CYANIDE 3-Amino-3-(3-fluorophenyl)propanoic acid 3-Amino-3-(4-methylphenyl)propionic acid 3-AMINO-3-(3-CHLORO-PHENYL)-PROPIONIC ACID Cefuroxime EP Impurity-A N-Nitroso hydroxy Cetrizine EP Impurity-A Noradrenaline EP Impurity D/Noradrenaline Methyl Ether Cetirizine EP Impurity A/Cetirizine CBHP Impurity Lantanoprost rc B Clidinium Bromide Impurity 4 - fluoro- 2 - methoxy- 5 - nitroaniline 1-(2-amino-5-hydroxy phenyl)propan-1-one tert-butyl 4-(6-((7-cyclo pentyl -6-(dimethyl carbamoyl) -7H-pyrrolo [2,3-d]pyrimidin-2-yl) amino)pyridin-3-yl) piperazine-1-carboxylate 2-amino-5-nitrobenzonitrile (4-Fluoro-2-methoxy-5-nitro- phenyl)-[4- (1-methyl-1H- indol-3- yl)-pyrimidin-2-yl]- amine (3R,4R)-1-benzyl-N,4-dimethylpiperidin-3- amine 2-Chloro Benzylcyanide 3,4 Diethoxy Benzylcyanide 3,4 Dimethoxy Benzylcyanide 3-chlorobenzyl cyanideRelated products of tetrahydrofuran
![DIMETHYL BICYCLO[2.2.1]-2,5-HEPTADIENE-2,3-DICARBOXYLATE](https://img.chemicalbook.in/StructureFile/ChemBookStructure2/GIF/CB9765559.gif)
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