Zinc nitrate phosphate film grain is too thick or too thin, the free acid content is too high, over-etching the surface of insufficient solution phosphate content, surface residual acid. Prevent: Adjust the free acidity and total acidity ratio; reduce the free acid content, can add zinc oxide or zinc hydroxide; control the pickling process; supplementary dihydrogen phosphate; strengthening and with the washing process. Improve the technological level of management process design is important role of zinc nitrate, but can not be ignored process management. Practice shows that the phosphating solution of zinc nitrate and zinc nitrate phosphate liquid process are the same under the same conditions), different process management has gained a different effect phosphating solution of zinc nitrate. Process management level high zinc nitrate, zinc nitrate phosphate solution is not only good quality, and low energy consumption, low cost; the other hand, poor quality, high cost. Zinc nitrate in the course, there are a lot of hydrogen chloride gas Shandong zinc nitrate, suction device can be mounted on the container side, coupled with the fan, mist purifiers, air duct and other equipment and facilities, the zinc nitrate mist exhausted to the outside handle. It can be used in the refinery alkylation reaction of isobutane and butane content of zinc nitrate catalyst, stainless steel surface to remove oxygen impurities "pickling" process will be used zinc nitrate. Synthesis of zinc nitrate can be used for a variety of fluorine-containing organic compounds, zinc nitrate is also used to etch glass, an oxide semiconductor industry to use it to remove the silicon surface. Low zinc nitrate, three-level chemical quality assurance (online consultation), zinc nitrate level by Jinan three Chemical Co. Jinan three ping Chemical Co., Ltd. (www.sanpinghuagong.com) Shandong Jinan, chemical products leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Three-ping Chemical leadership with the staff warmly welcome all inquiries negotiations to create three levels of chemical better future.