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Crotonic acid

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Crotonic acid Basic information
Crotonic acid Chemical Properties
  • Melting point:70-72 °C (lit.)
  • Boiling point:180-181 °C (lit.)
  • Density 1.027 g/mL at 25 °C (lit.)
  • vapor density 2.97 (vs air)
  • vapor pressure 0.19 mm Hg ( 20 °C)
  • refractive index 1.4228
  • FEMA 3908 | (E)-2-BUTENOIC ACID
  • Flash point:190 °F
  • storage temp. Store below +30°C.
  • solubility H2O: soluble
  • pka4.69(at 25℃)
  • form Crystalline Flakes
  • color White to light yellow
  • PH3 (10g/l, H2O, 20℃)
  • explosive limit15.1%, 171°F
  • Water Solubility 94 g/L (25 ºC)
  • Merck 14,2597
  • JECFA Number1371
  • BRN 1719943
  • InChIKeyLDHQCZJRKDOVOX-NSCUHMNNSA-N
  • CAS DataBase Reference107-93-7(CAS DataBase Reference)
  • NIST Chemistry ReferenceCrotonic acid(107-93-7)
  • EPA Substance Registry System2-Butenoic acid, (2E)- (107-93-7)
Safety Information
  • Hazard Codes C,N,Xi
  • Risk Statements 21/22-34-50/53-36/37/38
  • Safety Statements 26-36/37/39-45-61-37/39
  • RIDADR UN 2823 8/PG 3
  • WGK Germany 3
  • RTECS GQ2900000
  • Autoignition Temperature744 °F
  • HazardClass 8
  • PackingGroup III
  • HS Code 29161940
  • ToxicityLD50 orally in rats: 1.0 g/kg (Smyth, Carpenter)
MSDS
Crotonic acid Usage And Synthesis
  • Chemical PropertiesWhite to light yellow crystalline flakes
  • Chemical Properties2-Butenoic acid is a crystalline compound with a pungent odor.
  • Preparation(E)-2-Butenoic acid may be formed by oxidation of crotonaldehyde, 2-butenal. If (Z)-butenoic acid is heated at 180°C, it is converted to (E)-2-butenoid acid.
  • Purification MethodsDistil the acid under reduced pressure and/or recrystallise it from pet ether (b 60-80o) or water, or by partial freezing of the melt. [Beilstein 2 IV 1498.]
Crotonic acid Preparation Products And Raw materials
Crotonic acid(107-93-7)Related Product Information
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