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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 Anhydrous Hydrofluoric Acid

      Quality StandardGB7747-2011

      Molecular FormulaHF                              Molecular Weight20.01

      Item

      Index

      Premium grade

      I Class

      II Class

      Top-grade

      First-grade

      Qualified product

      Hydrogen fluoride (HF) w/% ≥

      99.99

      99.92

      99.96

      99.92

      99.8

      Moisture(H2O) w/% ≤

      0.002

      0.004

      0.02

      0.04

      0.06

      Fluorosilicic Acid(H2SiF6) w/% ≤

      0.002

      0.005

      0.008

      0.015

      0.050

      Sulfur Dioxide(SO2)  w/% ≤

      0.002

      0.003

      0.005

      0.010

      0.030

      Non-volatile acid(H2SO4) w/% ≤

      0.002

      0.005

      0.005

      0.010

      0.050

      Properties
      The product is a colorless, transparent liquid. It has a strongly pungent odor. It is very corrosive and strong toxic. White fumes can rise from it in air. Boiling point 19.5℃.
      Application
      The product is mainly used for making element fluoride,fluorate,fluoride haloid alkane and hydrofluoric acid. It can be also used as fluorinating agent.
      Storage
      The product should be stored in a storehouse with a shed and kept away from the sunlight. Strictly forbid storing it with combustibles and explosive together.
      Transport
      It should be treated as Grade A inorganic acid corrosive goods.
      Packing
      (1)It is filled in a mid-pressure steel cylinder without a fusible stopper,with net weight 330kg or 660kg per cylinder.
      (2)Iso tank with net weight 25000kg or 28000kg. 

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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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