Maleic acid
Properties
- Molecular formula
- C4H4O4
- Molar mass
- 116.07 g/mol
- Exact mass
- 116.0110 Da
- Density
- 1.59 g/mL (at 20 °C)
- Melting point
- 131 °C
- Boiling point
- 110 °C
- pKa
- 1.94, 6.22 (OECD Guideline 105, 25 °C)
- Flash point
- 127 °C
- Water solubility
- 788 g/L (25 °C)
- logP
- -0.29Crippen estimate
- Polar surface area
- 74.6 Ų
- H-bond donors / acceptors
- 2 / 2
- Rotatable bonds
- 2
Hazards
Warning
- H302 Harmful if swallowedAcute toxicity, oral
- H315 Causes skin irritationSkin corrosion/irritation
- H317 May cause an allergic skin reactionSensitization, Skin
- H319 Causes serious eye irritationSerious eye damage/eye irritation
- H335 May cause respiratory irritationSpecific target organ toxicity, single exposure; Respiratory tract irritation
Harmonised EU classification (CLP Annex VI, index 607-095-00-3), via PubChem.
Precautionary statements
P261, P264, P264+P265, P270, P271, P272, P280, P301+P317, P302+P352, P304+P340, P305+P351+P338, P319, P321, P330, P332+P317, P333+P317, P337+P317, P362+P364, P403+P233, P405, P501
Identifiers
CAS number
110-16-7SMILES
O=C(O)/C=CC(=O)OInChIKey
VZCYOOQTPOCHFL-UPHRSURJSA-NInChI
InChI=1S/C4H4O4/c5-3(6)1-2-4(7)8/h1-2H,(H,5,6)(H,7,8)/b2-1-Weigh it out
Type any one amount. The others follow from the molar mass and density.
Names and synonyms
13 names · show all
- 2-Butenedioic acid (2Z)-
- 2-Butenedioic acid (Z)-
- (2Z)-2-Butenedioic acid
- cis-Butenedioic acid
- cis-1,2-Ethylenedicarboxylic acid
- Maleinic acid
- Toxilic acid
- 2-Butenedioic acid, (Z)-
- cis-2-Butenedioic acid
- Scotchbond multipurpose etchant
- Malezid CM
- (2Z)-Butene-2-dioic acid
- (Z)-2-Butenedioic acid
Safety data sheets
One stored sheet lists this compound in section 3, matched by the CAS number 110-16-7. Each row opens the sheet with its composition and PDF.
Work with Maleic acid
Predict the NMR spectrum1H and 13C shifts with multiplicities
Make a solutionWhat to weigh for any molarity and volume
Check drug-likenessLipinski, Veber and lead-likeness
Boiling point under vacuumAt any pressure, from its normal boiling point
Isotope patternExact mass and the mass spectrum pattern
Stereoisomers, salts and isotopologues
The same compound in another form: other stereochemistry, a salt or hydrate, the free acid or base, or an isotope-labelled version.
Fumaric acid110-17-8Defined stereoisomer
Iron(II) fumarate141-01-5Salt, defined stereoisomer
Enalapril maleate76095-16-4Salt, defined stereoisomer
Pyrilamine maleate59-33-6Salt
Chlorpheniramine maleate113-92-8Salt
Timolol maleate26921-17-5Salt, defined stereoisomer
Sodium fumarate5873-57-4Salt, defined stereoisomer
Clemastine fumarate14976-57-9Salt, defined stereoisomer
Calcium fumarate19855-56-2Salt, defined stereoisomer
(±)-Brompheniramine maleate980-71-2Salt
Dexchlorpheniramine maleate2438-32-6Salt, defined stereoisomer
Carbinoxamine maleate3505-38-2Salt
Similar compounds
Cis,cis-Muconic acid1119-72-873 % similar
Muconic acid3588-17-873 % similar
Acrylic acid-maleic acid copolymer29132-58-967 % similar
Crotonic acid107-93-765 % similar
Crotonic acid3724-65-065 % similar
Maleamic acid557-24-463 % similar
Sorbic acid110-44-155 % similar
2,4-Pentadienoic acid626-99-355 % similar
Tanimoto similarity of circular fingerprints over the whole catalogue. All similar compounds