Los ntawm salicylaldehyde los ntawm methylation cov tshuaj tiv thaiv nrog dimethyl sulfate.Sib tov 3kg ntawm sodium hydroxide rau hauv 30% aqueous tov, ntxiv 12.2kg salicylaldehyde thiab 80L dej hauv qab nplawm, thiab kub kom npau npau.Maj mam ntxiv 12.9kg ntawm dimethyl sulfate, khaws cov tshuaj tiv thaiv refluxed rau li 3h tom qab ntxiv, txuas ntxiv reflux rau 2-3h tom qab Chemicalbook…