What is the melting point of maleic acid?
What is the melting point of maleic acid?
130.5 °C
Maleic acid is soluble in water whereas fumaric acid is not and the melting point of maleic acid (130 – 131 oC) is also much lower than that of fumaric acid (287 oC)….3D Structure for HMDB0000176 (Maleic acid)
| Property | Value | Reference |
|---|---|---|
| Melting Point | 130.5 °C | Not Available |
| Boiling Point | Not Available | Not Available |
What is cis-butenedioic acid?
Maleic acid or cis-butenedioic acid is an organic compound that is a dicarboxylic acid, a molecule with two carboxyl groups. Its chemical formula is HO2CCH=CHCO2H. It is mainly used as a precursor to fumaric acid, and relative to its parent maleic anhydride, maleic acid has few applications.
Why fumaric acid has a higher melting point?
What your book (probably) meant is that the hydrogen bonds in fumaric acid, being intermolecular, does a better job of holding the molecules together, so it has a higher boiling point than maleic acid, which instead, displays intramolecular hydrogen bonding which doesn’t hold the molecules together just as well.
What happens when malic acid is heated?
Malic acid is known as a component in wine and in extracts of grape and other fruits. This bifunctional organic compound, possessing one hydroxyl and two carboxyl groups, forms the monoammonium salt1-3 and other N-substituted ammonium salts4. Upon heating, the monoammonium salt affords polyaspartic acid3,5,6.
Is maleic acid strong or weak?
Maleic acid is a weak diprotic acid that can dissociate stepwise as shown in equations (1) and (2). As the acid is titrated with strong base, the pH changes in a characteristic way giving rise to a 2-step titration curve.
What is the melting point of fumaric acid?
287 dec °C
Properties
| Property | Value | Source |
|---|---|---|
| melting point (°C) | 287 dec °C | PhysProp |
| boiling point (°C) | 522 °C | PhysProp |
| water solubility | 7000 mg/L (at 25 °C) | US EPA (1981) |
| logP | 0.46 | HANSCH,C ET AL. (1995) |
What kind of acid is cis butenedioic acid?
CAS NO. EINECS NO. MOL WT. Maleic acid (also called cis-butenedioic acid), a white crystals easily soluble in water, acetone, and alcohol, is an unsaturated organic dibasic acid which carboxylic acid groups are next to each other in the cis form.
Which is the trans isomer of butenedioic acid?
Its chemical formula is HO 2 CCH=CHCO 2 H. Maleic acid is the cis -isomer of butenedioic acid, whereas fumaric acid is the trans -isomer. It is mainly used as a precursor to fumaric acid, and relative to its parent maleic anhydride, maleic acid has few applications.
What is CID 444266 for maleic acid?
Maleic acid | C4H4O4 | CID 444266 – structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more. This application requires Javascript. Please turn on Javascript in order to use this application.
What is the molecular formula for butenedioic acid?
Molecular Formula. C4H4O4. Synonyms. Butenedioic acid. Futrans-2-Butenedioic Acid. C4H4O4. 2-aButenedioic acid. 1,2-Ethenedicarboxylic. More…