... ether, dissolved in ethanol, methanol, do not dissolve in water. 4-hydroxybenzoic acid Preparation Methods : vegetable oil or oil feet of ... , lubricants,plasticizers, emulsifiers, softener, waterproof agent cleaner.Erucic Acid Specification: DP FC22-90 , Typical DataColor(APHA), 250max, 200Content wt% 90min, 90 ... , 163.5Iodine Value mg I2/g, 72--80, 75.5 4-hydroxybenzoic acid