| Physical and Chemical Properties | Chemical quality This product is a brown-yellow viscous liquid. The relative density (20 ℃) is 1.25, and it has good scale and corrosion inhibition performance. |
| Use | Applications for industrial circulating water, such as large chemical fertilizer, power plants, paper mills and other steam locomotive water treatment, as scale and corrosion inhibitors. Can also be used to compound cleaning agent. |
add polymaleic acid aqueous solution and dehydrating agent toluene to the reaction kettle in turn, and heat and dehydrate. After removing the moisture in polymaleic anhydride, pour out the dehydrating agent. Cold to room temperature, add a certain amount of PCl3, after dropping, react at 60~80 ℃ for 1h. After the reaction is eased, a certain amount of water is added and hydrolyzed at 70~80 ℃ for 1h. The product is obtained.