63189

Maleic acid

tested according to Ph. Eur.

• Synonym(s): Acidum maleicum, cis-Butenedioic acid, Toxilic acid
• Linear Formula: HO₂CCH=CHCO₂H
• CAS Number: 110-16-7
• Molecular Weight: 116.07
• Beilstein: 605762
• EC Number: 203-742-5
• MDL number: MFCD00063177
• UNSPSC Code: 12352100
• PubChem Substance ID: 329759809

Properties

• Agency: USP/NF; tested according to Ph. Eur.
• Assay: 99.0-101.0% substance (anhydrous) basis
• form: fine crystals; powder
• mp: 130-135 °C (lit.)
• solubility: water: soluble 478.8 g/L at 20 °C
• density: 1.59 g/mL at 25 °C (lit.)
• cation traces: Fe: ≤5 ppm; heavy metals: ≤10 ppm
• application(s): pharmaceutical (small molecule)
• storage temp.: 2-8°C
• SMILES string: OC(=O)\C=C/C(O)=O
• InChI: 1S/C4H4O4/c5-3(6)1-2-4(7)8/h1-2H,(H,5,6)(H,7,8)/b2-1-
• InChI key: VZCYOOQTPOCHFL-UPHRSURJSA-N

Description

General description

Maleic acid is a dicarboxylic acid. It can be synthesized from crotonaldehyde.

Application

Maleic acid may be used in the synthesis of (R,S)-malic acid and fumaric acid. It may be employed as an anionic monomer in the preparation of superswelling acrylamide (AAm)/maleic acid (MA) hydrogels.†

Safety Information

• Pictograms: GHS05,GHS07
• Signal Word: Danger
• Hazard Statements: H302 + H312,H314,H317,H335
• Precautionary Statements: P260 - P271 - P280 - P301 + P312 - P303 + P361 + P353 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 4 Dermal - Acute Tox. 4 Oral - Eye Dam. 1 - Skin Corr. 1 - Skin Sens. 1 - STOT SE 3
• Target Organs: Respiratory system
• Storage Class Code: 8A - Combustible corrosive hazardous materials
• WGK: WGK 1
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves