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    1. 少妇熟女内射一区二区三区_亚洲肥婆一区二区三区_99se亚洲综合在线_日本中文字幕一区二区高清在线

      Welcome to Fujian Yongjing Technology Co., Ltd. the website!

      Contact us

      Add: 18#, Xin'An Road, Shaowu City, Fujian, China
      International Trade Dept.
      Tel: +86-599-6655932/6654968
      Fax: +86-599-6654591
      Home Trade Dept. 
      Tel: +86-599-6654866/6654968
      Fax: +86-599-6655755
      High-purity Chemicals Dept.
      Tel: +86-599-6655536/6654968
      Fax: +86-599-6655755


      Products

      Industrial Sulphur Hexafluoride

      Quality StandardGB/T 12022-2014

      Molecular formulaSF                         Molecular weight146.05

      Item

      National Standard
      GB/T 12022-2014

      Company Standard

      Sulfur Hexafluoride (SF6) (mass fraction)/ 10-2  ≥

      99.90

      99.90

      Air (mass fraction)/10-6 ≤

      300

      30

      Carbon Tetrafluoride (CF4) (mass fraction)/10-6  ≤

      100

      3

      Hexafluoroethane(C2F6) (mass fraction)/10-6 ≤

      200

      6

      Octafluoropropane (C3F8) (mass fraction)/10-6   ≤

      50

      3

      Moisture (H2O) (mass fraction)/10-6 ≤

      5.0

      3.0

      Acidity (as HF)(HF)(mass fraction)/10-6  ≤

      0.2

      0.1

      Hydrolyzable Fluoride (as HF) (HF) (mass fraction)/10-6 ≤

      1.0

      0.8

      Mineral Oil (mass fraction)/10-6 ≤

      4.0

      3.0

      Bioexperiment ≤

      Non-toxic in bio-test

      Non-toxic in bio-test

      Properties
      Sulphur hexafluoride is liquid under normal temperature and pressure. It’s a colorless, odorless, non-toxic and non-corrosive gas. Its melting point is -50℃, boiling point is -63.8℃, and the density is 6.12g/L(20℃ 0.1MPS). It is an excellent electrical insulator.
      Application
      Sulphur hexafluoride is an excellent insert insulating gas widely used in high-voltage electric equipments and ground cables, mainly including electronic equipments, radar, particle accelerator, transformer, lightning arresters, refrigerant etc.
      Storage
      In cool, dry and ventilated warehouse.
      Transport
      With symbols indicated in GB19-73. The coefficient of the filling cylinders should not be higher than 1.33kg/L.
      Packing
      In seamless steel cylinder(40L, 12.5L, 10L, 8L, 4L)(Normally, the pressure is 15MPa, the filling coefficient<1.37kg/L).

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      少妇熟女内射一区二区三区_亚洲肥婆一区二区三区_99se亚洲综合在线_日本中文字幕一区二区高清在线
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