... of oil refining, saponification, vacuum drying and extrusion;3. Only when the crystal form of soap is tiny, the soap become ... texture which is mainly in the shape of β base;4. When you produce fatty acid products( laundry soap, compound soap and industrial ... soap base is 85 0C, vacuum dewatering is about 4%, you can take 53% fatty acid.5. Raw material (in the ...