Mahareng
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1,4-Phthalaldehyde
Kenya 6.0 g ya sodium sulfide, 2.7 g ya sulfur powder, 5 g ya sodium hydroxide le 60 ml ya metsi ka har'a 250 ml ka har'a botlolo ea melala e meraro e nang le reflux condenser le sesebelisoa se susumetsang, 'me u phahamisetse mocheso ho 80.℃tlasa tsitsinyeho.Phofo e Yellow sulfur e qhibiliha, 'me tharollo e fetoha khubelu.Ka mor'a ho reflux bakeng sa 1 h, ho fumanoa tharollo ea sodium polysulfide e bofubelu bo lefifi.
