2,4-Pentadienoic acid

  • 1,3-Butadiene-1-carboxylic acid
  • b-Vinylacrylic acid
  • 1-Carboxy-1,3-butadiene
  • 1-Carboxybutadiene
Formula
C5H6O2
Structure

Registry Numbers and Inventories.
CAS
626-99-3
EC (EINECS/ELINCS)
210-976-1
22 24/25
Beilstein/Gmelin
1739248
Beilstein Reference
3-02-00-01451
Korea ECL
Listed

Properties.
Formula
C5H6O2
Formula mass
98.10
Melting point, °C
80
Boiling point, °C
215
Vapor pressure, mmHg
0.06 (25 C)
Density
1.082 g/cm3 (20 C)
Solubility in water
Very soluble
Refractive index
 1.4594 (20 C)
pKa/pKb
4.47 (kPa)
Heat of vaporization
49.7 kJ/mol

Hazards and Protection.
Storage
Store at -20 C.
Respirators
Wear dust mask.
Small spills/leaks
Mix with solid sodium bicarbonate. Flush spill area with copious amounts of water. Place in appropriate container. Avoid raising dust.

Fire.
Flash Point,°C
122
Fire fighting
Extinguish using Water spray. Carbon dioxide, dry chemical powder, or appropriate foam. Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.

Health.
Exposure effects

First aid
 

Transport.