Propionaldehyde or propanal is the organic compound with the formula CH3CH2CHO. It is a saturated 3-carbon aldehyde and is a structural isomer of acetone. It is a colorless liquid with a slightly irritating, fruity odor.
It is principally used as a precursor to trimethylolethane (CH3C(CH2OH)3) through a condensation reaction with formaldehyde; this triol is an important intermediate in the production of alkyd resins. Other applications include reduction to propanol and oxidation to propionic acid.[1]
Condensation of propionaldehyde with tert-butylamine gives CH3CH2CH=N-t-Bu, a three-carbon building block used in organic synthesis. Deprotonation of this imine with LDA produces CH3CHLiCH=N-t-Bu, which in turn condenses with aldehydes.

Price:
Shelf Life : 24 months
Appearance : Clear to pale yellow liquid
Storage Instructions : Store tightly closed in a cool, wellventilated area, away from acids
CAS No : 112243
Density : 0.982 Gram per cubic centimeter(g/cm3)
Solubility : Soluble in water and organic solvents
Shelf Life : 2 years
Appearance : Colorless liquid
Storage Instructions : Store in a cool dry and wellventilated area away from heat and ignition sources
CAS No : 75649
Density : 0.696 Gram per cubic centimeter(g/cm3)
Solubility : Miscible in water
Shelf Life : 12 to 24 Months
Appearance : Colorless Liquid
Storage Instructions : Room Temperature
CAS No : 616386
Density : 1.07 Gram per cubic centimeter(g/cm3)
Solubility : Denser than water and slightly soluble in water