4762. Hydracrylic Acid

Nomenclature

CAS number: 503-66-2
3-Hydroxypropanoic acid; β-hydroxypropionic acid; ethylene lactic acid.
C3H6O3; mol wt 90.08.
C 40.00%, H 6.71%, O 53.28%.

Description and references

Prepd by alkaline hydrolysis of the nitrile: R. R. Read, Org. Synth. coll. vol. I, 321 (2nd ed., 1941).

Chemical structure

Properties

Viscous liq. Strong acid, pK (25°): 4.51. On distn or boiling with 50% H2SO4 dec into water and acrylic acid. Very sol in water, sol in alcohol, miscible with ether.

Derivative

Sodium salt.

Nomenclature

CAS number: 6487-38-3
C3H5NaO3; mol wt 112.06.
C 32.15%, H 4.50%, Na 20.52%, O 42.83%.

Properties

Deliquescent crystals, mp 143°.

Derivative

Calcium salt dihydrate.

Nomenclature

CAS number: 6556-13-4
C6H10CaO6.2H2O; mol wt 254.25.
C 28.34%, H 5.55%, Ca 15.76%, O 50.34%.

Properties

Prisms, mp 140-145°. Freely sol in cold water.