Chloride(Cl ion) in naphthalene sulfonate formaldehyde condensates sodium salts mainly come from caustic soda, which is a raw material of naphthalene sulfonate formaldehyde condensates sodium salts synthesis.Because caustic soda is made from sodium chloride.
There are two main production processes for caustic soda made from sodium chloride:ionic membrane method and isolating membrane method.Chloride contained in caustic soda that made by isolating membrane method is higher than that caustic so...
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