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.

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Usage : Laboratory, Industrial, Cosmetic Applications
Application Method : Other, Direct Use as Reagent or Additive
Physical State : Other, Solid (Crystalline Powder)
Type : Other , Analytical Reagent, Industrial Grade
Application : Photography Developer, Polymerization Inhibitor, Skin Depigmentation, Cosmetics
Storage Instructions : Store in Cool, Dry Place, Protect from Light and Moisture
Usage : Used as a reducing agent preservative and in industrial applications
Application Method : Other, Industrial scale application or laboratory use
Physical State : Other, Liquid
Type : Other , Organic acid
Application : Used in leather tanning dyeing and as a preservative
Storage Instructions : Store in a cool dry place away from incompatible materials
Usage : General industrial applications
Application Method : As per usage instructions, Other
Physical State : Other, Solid
Type : Other , Chemical compound
Application : Industrial chemical applications
Storage Instructions : Store in a dry environment