Glutaraldehyde

Molecular formula: C5H8O2
Molecular weight: 100.12
CAS No.： 111-30-8
Appearance: 25% and 50% glutaraldehyde are colorless or slightly yellow oily transparent liquids
Solubility: soluble in hot water ethanol, chloroform, and glacial acetic acid

Usage: Used as a fungicide and also for leather tanning.

Safety instructions: In case of eye contact, immediately rinse with plenty of water and seek medical attention.
S45: In case of accidents or discomfort, immediately seek help from a doctor (bring the product container label).
S36/37/39: Wear appropriate protective clothing, gloves, and use protective goggles or face shields.
Production method and others: 2-Ethoxy-3,4-dihydropyran is formed by cyclization of acrolein and vinyl ether, and added to a reaction vessel. The mixture is stirred in a closed container for 1 hour and left to stand for half an hour to obtain a glutaraldehyde solution. Ethanol is evaporated to obtain a 25% solution. Alternatively, neutralize with sodium bicarbonate, saturate with salt, and then extract twice with ether. After recovering the ether, distill under reduced pressure and collect the 75-81 ℃ (2kPa) fraction to obtain pure product. In addition, pyridine is reduced to dihydropyridine, and then treated with hydroxylamine to obtain pentanedioxime. Finally, sodium nitrite and hydrochloric acid are used to react pentanedioxime to glutaraldehyde. The conversion rate of this method can reach 90%.