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

          Fluorosilicic Acid

          Molecular formula: H2SiF6
          Molecualr weight: 144.09
          Properties: Colorless, transparent and smoky liquid with penetrating odor; highly acidic; soluble in water and volatile; with disinfecting action; corrosive to glass, ceramics, lead and other metals; highly corrosive to human skin and harmful to people's respiratory organs; keep it in a container made of plastics.
          Usage: Mainly applied to the preparation of aluminium fluort(le, cryolite and sodium fluorosilicate.
          Content (H2SiF6): 34%
          Impurities:

          Dissociate acid(HF)

          ≤0.9%

          Sulfate(SO4)

          ≤0.1%

          Iron(Fe)

          ≤0.004%

          Heavy metal(Pb)

          ≤0.005%

          Dissociate(SiO2)

          ≤0.5%

          Packing: 25kg or 250kg plastic drum
          Caution at transportation: Corrosive; UN code: 1778; specified number of hazardous goods:91036; class of risk: 8.
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          欧美超大胆裸体XX视频

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