1374500

Maleic acid

United States Pharmacopeia (USP) Reference Standard

• Synonym(s): cis-Butenedioic acid, Toxilic acid
• Linear Formula: HO₂CCH=CHCO₂H
• CAS Number: 110-16-7
• Molecular Weight: 116.07
• UNSPSC Code: 41116107
• NACRES: NA.24
• PubChem Substance ID: 329750311
• MDL number: MFCD00063177
• Beilstein/REAXYS Number: 605762

Properties

• grade: pharmaceutical primary standard
• agency: USP
• API family: maleic acid
• form: crystalline powder
• manufacturer/tradename: USP
• mp: 130-135 °C (lit.)
• solubility: water: 788 g/L at 20 °C, 1-propanol: freely soluble, alcohol: freely soluble, chloroform: insoluble, methanol: freely soluble
• density: 1.59 g/mL at 25 °C (lit.)
• application(s): pharmaceutical; pharmaceutical (small molecule)
• format: neat
• 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

Find answers to frequently asked questions on USP products in USP FAQs.

This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets have been developed and issued under the Authority of the issuing Pharmacopoeia. For further information and support please go to the website of the issuing Pharmacopoeia.

Analysis Note

These products are for test and assay use only. They are not meant for administration to humans or animals and cannot be used to diagnose, treat, or cure diseases of any kind.  ​

Other Notes

Sales restrictions may apply.

Safety Information

• Pictograms: GHS05,GHS07
• Signal Word: Danger
• Hazard Codes: H302 + H312,H314,H317,H335
• Precautionary Statements: P260 - P271 - P280 - P301 + P312 - P303 + P361 + P353 - P305 + P351 + P338
• Target Organs: Respiratory system
• Storage Class: 8A - Combustible corrosive hazardous materials
• WGK: WGK 1
• Flash Point (°F): Not applicable
• Flash Point (°C): Not applicable
• Hazard Classifications: Acute Tox. 4 Dermal - Acute Tox. 4 Oral - Eye Dam. 1 - Skin Corr. 1B - Skin Sens. 1 - STOT SE 3