欧美超大胆裸体XX视频

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          Welcome to the official website of Changshu Xinhua Chemical Co., Ltd.!

          Changshu Xinhua chemical co., ltd.

          常熟市新華化工有限公司

          Changshu Xinhua chemical co., ltd.

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          · Have a scientific enterprise management system · Is a high-tech enterprise in Jiangsu Province and Changshu Polymer New Material Industry Base

          Ammonium Fluorosilicate

          Molecular formula: (NH4)2·SiF6
          Molecualr weight: 178.14
          Properties: Colorless crystle powder, soluble in water and alcohol. It has α and β two configuration, α is isometric system, β is triclinic system, stable in air, but when the β configuration is heated for a long time, its own crystle system break, then converted to α configuration powder. The two states can be soluble in water and ethanol, not soluble in propanol.
          Usage: anti-moth agent, disinfectant for wine industry, glass etchant, anti-moth agent for textile, also used for light-metal casting, electroplating, used in artificial cryolite and producing ammonium chlorate etc.
          Content: 98%
          Impurities:

          (SO4)

          ≤0.2%

          (H2O)

          ≤0.6%

          Water insoluble matter

          ≤0.2%

          Iron (Fe)

          ≤0.005%

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          欧美超大胆裸体XX视频

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