Water-soluble demulsifier includes dry agent and finished product. Dry agent needs to be  prepared into finished product with methanol and water as solvent before it can be used, and  the finished product is soluble in water and alcohol. It is mainly used for demulsification and  dehydration of crude oil in oil fields, and also for desalination and dehydration in refineries.  Water-soluble demulsifier is the most important type of demulsifier in the domestic market. You  can choose different varieties and use according to the oil quality.