- CITRACONIC ACID
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Cas Database |
| Name |
CITRACONIC ACID |
EINECS | 207-858-7 |
| CAS No. | 498-23-7 | Density | 1.388 g/cm3 |
| PSA | 74.60000 | LogP | 0.10190 |
| Solubility | FREELY SOLUBLE | Melting Point |
88-94 °C(lit.)
|
| Formula | C5H6O4 | Boiling Point | 336.554 °C at 760 mmHg |
| Molecular Weight | 130.1 | Flash Point | 171.546 °C |
| Transport Information | N/A | Appearance | Hygroscopic, off-white powder. |
| Safety | 36-37/39-26 | Risk Codes | 22-36/37/38 |
| Molecular Structure |
|
Hazard Symbols |
 Xn
|
| Synonyms |
(Z)-2-Methyl-2-butenedioicacid;Methylmaleic acid; |
Article Data | 52 |
CITRACONIC ACID Synthetic route
| Conditions | Yield |
|---|---|
| With lithium hydroxide In tetrahydrofuran at 20℃; for 8h; Inert atmosphere; | 84% |
- 97-65-4
2-methylenesuccinic acid
A
- 79-41-4
poly(methacrylic acid)
B
- 498-23-7
citraconic acid
C
- 498-24-8
Mesaconic acid
| Conditions | Yield |
|---|---|
| With 5% Pt/Al2O3; sodium hydroxide In water at 250℃; for 1h; Reagent/catalyst; Temperature; Inert atmosphere; | A 68% B n/a C n/a |
| With sodium hydroxide In water at 180℃; under 112511 Torr; for 0.241667h; | A 27.26 %Spectr. B 36.48 %Spectr. C 16.23 %Spectr. |
| With sodium hydroxide at 280℃; for 0.0583333h; | A 57.08 %Chromat. B 5.91 %Chromat. C 5.72 %Chromat. |
| With sodium hydroxide at 250℃; for 0.25h; Reagent/catalyst; |
- 77-92-9
citric acid
A
- 79-41-4
poly(methacrylic acid)
B
- 498-23-7
citraconic acid
C
- 498-24-8
Mesaconic acid
D
- 97-65-4
2-methylenesuccinic acid
| Conditions | Yield |
|---|---|
| With 4-methoxy-phenol; triphenylphosphine In water at 225℃; under 20686.5 Torr; for 1.5h; Temperature; Glovebox; Inert atmosphere; | A 24.1% B n/a C n/a D n/a |
| With sodium hydroxide at 250℃; for 0.25h; Reagent/catalyst; |
- 849585-22-4
LACTIC ACID
- 498-23-7
citraconic acid
| Conditions | Yield |
|---|---|
| at 250 - 260℃; |
| Conditions | Yield |
|---|---|
| With acetyl chloride | |
| Irradiation.UV-Licht; | |
| at 250℃; |
| Conditions | Yield |
|---|---|
| at 250 - 260℃; |
| Conditions | Yield |
|---|---|
| Citraconsaeureanhydrid entsteht bei der Destillation; | |
| Multi-step reaction with 2 steps 1: water / 180 - 200 °C 2: 250 °C View Scheme | |
| With sodium hydroxide In water at 190℃; under 112511 Torr; for 0.0666667h; Temperature; | 25.32 %Spectr. |
| Conditions | Yield |
|---|---|
| With water Equilibrium constant; pH = 0.3; | |
| With water Kinetik der Bildung; | |
| With water |
| Conditions | Yield |
|---|---|
| Citraconsaeureanhydrid entsteht bei der Destillation; |
| Conditions | Yield |
|---|---|
| bei der Destillation; auch ihr Anhydrid entsteht; unter intermediaerer Bildung von Itaconsaeureanhydrid; | |
| With hydrogen iodide | |
| man destilliert und laesst auf das gebildete Citraconsaeureanhydrid Wasser in der Kaelte einwirken; | |
| Thermolysis.und Behandlung des Anhydrids mit Wasser; |
CITRACONIC ACID Chemical Properties
Product Name: Citraconic acid (CAS NO.498-23-7)
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Molecular Formula: C5H6O4
Molecular Weight: 130.1g/mol
Mol File: 498-23-7.mol
Einecs: 207-858-7
Appearance: White to light beige crystalline powder
Melting Point: 88-94 °C(lit.)
Boiling point: 336.6 °C at 760 mmHg
Flash Point: 171.5 °C
Density: 1.387 g/cm3
Water Solubility: Freely soluble
Sensitive: Hygroscopic
Surface Tension: 57.4 dyne/cm
Enthalpy of Vaporization: 63.72 kJ/mol
Vapour Pressure: 2.09E-05 mmHg at 25°C
XLogP3-AA: -0.1
H-Bond Donor: 2
H-Bond Acceptor: 4
CITRACONIC ACID Toxicity Data With Reference
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| guinea pig | LD50 | oral | 1350mg/kg (1350mg/kg) | GASTROINTESTINAL: GASTRITIS | Food and Cosmetics Toxicology. Vol. 2, Pg. 327, 1964. |
| mouse | LD50 | oral | 2260mg/kg (2260mg/kg) | BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) LUNGS, THORAX, OR RESPIRATION: DYSPNEA GASTROINTESTINAL: OTHER CHANGES | Food and Cosmetics Toxicology. Vol. 2, Pg. 327, 1964. |
| rat | LD50 | oral | 1320mg/kg (1320mg/kg) | BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) BEHAVIORAL: TREMOR GASTROINTESTINAL: ULCERATION OR BLEEDING FROM STOMACH | Food and Cosmetics Toxicology. Vol. 2, Pg. 327, 1964. |
CITRACONIC ACID Safety Profile
Safety Information of Citraconic acid (CAS NO.498-23-7):
Hazard Codes: Xn.gif){kind=small}
Risk Statements: 22-36/37/38
22: Harmful if swallowed
36: Irritating to the eyes
37: Irritating to the respiratory system
38: Irritating to the skin
Safety Statements: 36-37/39-26
26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
36: Wear suitable protective clothing
37: Wear suitable gloves
39: Wear eye/face protection
CITRACONIC ACID Specification
Citraconic acid ,its CAS NO. is 498-23-7,the synonyms is (z)-2-Methyl-2-butenedioic acid ; (2z)-2-Methyl-2-butenedioic acid ; Kyselina citrakonova ; Kyselinacitrakonova ; Maleic acid, methyl- ; Methyl-maleicaci ; 2-Methyl-2-butenedioic acid ; Methylmaleic acid .
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