How to produce 40% acetaldehyde aqueous solution on an industrial scale
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Acetaldehyde is highly reactive, has a low boiling point, and evaporates easily. It is rare to find acetaldehyde with a purity of over 99% on the market; most acetaldehyde is sold in the form of 40% aqueous solutions. I would like to ask: how is this 40% aqueous acetaldehyde solution produced on an industrial scale? After I prepared acetaldehyde with a purity of over 98%, mixing it with distilled water at low temperatures always resulted in a white turbid solution. I’m not sure what the problem is; various methods have been tried without success. Could it be that flocculation occurs when the oily acetaldehyde is mixed with water? I hope everyone can give me some advice. Thank you.
40% acetaldehyde aqueous solution is obtained by absorbing the reaction gas exiting the reactor with water during the acetaldehyde production process, resulting in an aqueous solution with a concentration of 40%. It should be noted that I have no experience in working with acetaldehyde; this information is based on sources I’ve referred to； The appearance of a white turbidity may be due to polymers forming as acetaldehyde comes into contact with air during the preparation process; moreover, the production environment is sealed, resulting in limited amounts of air. :handshake