113018

Crotonic acid

98%

• Synonym(s): trans-2-Butenoic acid
• Linear Formula: CH₃CH=CHCOOH
• CAS Number: 107-93-7
• Molecular Weight: 86.09
• Beilstein/REAXYS Number: 1719943
• EC Number: 203-533-9
• MDL number: MFCD00002701
• UNSPSC Code: 12352100
• PubChem Substance ID: 24847127
• NACRES: NA.22

Properties

• vapor density: 2.97 (vs air)
• Quality Level: 100
• vapor pressure: 0.19 mmHg ( 20 °C)
• assay: 98%
• autoignition temp.: 744 °F
• expl. lim.: 15.1 %, 171 °F; 2.2 %, 135 °F
• bp: 180-181 °C (lit.)
• mp: 70-72 °C (lit.)
• solubility: H₂O: soluble
• density: 1.027 g/mL at 25 °C (lit.)
• functional group: carboxylic acid
• SMILES string: [H]\C(C)=C(\[H])C(O)=O
• InChI: 1S/C4H6O2/c1-2-3-4(5)6/h2-3H,1H3,(H,5,6)/b3-2+
• InChI key: LDHQCZJRKDOVOX-NSCUHMNNSA-N

Description

General description

Crotonic acid undergoes esterification with butan-2-ol by following second order reaction kinetics.

Application

Crotonic acid is used in the copolymerization of crotonic acid hydrogel systems by using gamma-rays. The crosslinked copolymeric crotonic acid hydrogels release fertilizers and drugs that help to prevent environmental pollution.

Preparation Note

Crotonic acid dissolves in water at a concentartion of 100 mg/ml to yield a clear, colorless solution.

Safety Information

• pictograms: GHS05
• signalword: Danger
• hcodes: H318
• pcodes: P280 - P305 + P351 + P338
• Hazard Classifications: Eye Dam. 1
• Storage Class: 8A - Combustible corrosive hazardous materials
• wgk_germany: WGK 2
• flash_point_f: 190.4 °F - closed cup
• flash_point_c: 88 °C - closed cup
• ppe: Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges