8.02650

Crotonic acid

for synthesis

• Synonym(s): Crotonic acid, ß-Methylacrylic acid, 2-Butenoic acid
• Linear Formula: CH₃CH=CHCOOH
• CAS Number: 107-93-7
• Molecular Weight: 86.09
• MDL number: MFCD00002701
• UNSPSC Code: 12352106
• EC Index Number: 203-533-9
• NACRES: NA.22

Properties

• vapor pressure: 0.25 hPa ( 20 °C)
• Quality Level: 200
• Assay: ≥99.0% (GC)
• form: crystals
• autoignition temp.: 500 °C
• potency: 1000 mg/kg LD₅₀, oral (Rat); 600 mg/kg LD₅₀, skin (Rabbit)
• pH: 3 (20 °C, 10 g/L in H₂O)
• bp: 185.0-199.5 °C/1013 hPa
• mp: 70-73 °C
• transition temp: flash point 90 °C
• density: 1.02 g/cm³ at 20 °C
• bulk density: 543 kg/m³
• storage temp.: 2-30°C
• InChI: 1S/C4H6O2/c1-2-3-4(5)6/h2-3H,1H3,(H,5,6)/b3-2+
• InChI key: LDHQCZJRKDOVOX-NSCUHMNNSA-N

Description

Analysis Note

Assay (GC, area%): ≥ 99.0 % (a/a)
Melting range (lower value): ≥ 70 °C
Melting range (upper value): ≤ 73 °C
Identity (IR): passes test

Safety Information

• Pictograms: GHS05
• Signal Word: Danger
• Hazard Statements: H318
• Precautionary Statements: P280 - P305 + P351 + P338
• Hazard Classifications: Eye Dam. 1
• Storage Class Code: 8A - Combustible, corrosive hazardous materials
• WGK: WGK 2
• Flash Point(F): 190.4 °F - closed cup
• Flash Point(C): 88 °C - closed cup