| Section2 = | Section3 = | Section7 =, | SPhrases =,, | FlashPt = −26 °C | Autoignition = 175 °C }} | Section8 = }} Propionaldehyde or propanal's the organic compound with the formula CH3CH2CHO. It's a saturate 3-carbon aldehyde and's a structural isomer of acetone. It's a colourless liquid with a slightly irritating, fruity odour. Production Propionaldehyde's mainly produced industrially through hydroformylation, by combining synthesis gas (carbon monoxide and hydrogen) with e… (More on Propionaldehyde)