Nanjing Jiancheng Chemical Industrial Co.Ltd

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Production of Ethylparaben

P-hydroxybenzoic acid, ethanol, benzene and sulphuric acid in order to join the esterification reactor, heat the mixture of esterification. Steam through the condenser into water esterified to remove generated water, benzene and then returned to the esterification reactor.
After the reaction kettle temperature up to 100 ℃, keep 10 min when no distillate strike the reaction liquid into a washing pan of water and fast mixing, adding NaOH to neutral solution to remove unreacted p-hydroxy benzoic acid.
The crystallization of centrifugal filtration after moving after wash twice decoloring pan, heat with ethanol dissolves and decolorizing activated carbon. After hot pressure filtration, the filtrate into the crystallizer crystallization, filtration drying for Ethylparaben.
Nanjing Jiancheng Chemical Industrial Co.Ltd founded in 1998, is one of the largest preservative manufacture in China. The Factory mainly produces all kinds of preservatives, which widely applied in cosmetics, medicine, and food industry. Our main products are Diazolidinyl urea, Imidazolidinyl urea, Methylparaben, Ethylparaben, Propylparaben, Butylparaben, Bronopol, Allantoin, Germall Plus, JMB, JMC, JMBP and so on. Our products are well exported to all over the world, such as North America, Europe and Southeast Asia.