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Introduction and application of sodium bifluoride

Time:2021-07-30 10:07:01 Source:未知 Click:

Introduction and application of sodium bifluoride
Sodium Bifluoride(SODIUM HYDROGEN DIFLUORIDE, Formula: NaHF2
It is a white crystal with relative density of 2.08. It is soluble in water, but insoluble in ethanol. Its aqueous solution can etch glass. When heated sodium hydrogen fluoride decomposes into sodium fluoride and hydrogen fluoride.

As a manufacturer ,we have produced and exported Sodium Bifluoride for 15 years , it is the regulated Dial-use product , we need the customers supply the required documents to apply the Export License issued by National Department of Commerce , which will take 2-3 weeks to get the license .
We export thousand of tons Sodium Bifluoride yearly, it has widely use, mainly used in tinplate production and metal surface treatment ,also have the following applications: Can be used as food protection agent, animal and plant specimen and anatomical specimen preservative and preservative, also used in acid-resistant cement, masonry cleaner, disinfectant, glass etchant, leather treatment agent, welding and brazing flux, starch Protective agent, stainless steel pickling,  and textile treatment, etc.
Today we would like to introduce how it used in metal surface treatment :
The metal surface treatment agent is composed of new organic acid, Zinc Nitrate, Sodium Molybdate, Nickel Nitrate, Sodium Hydrogen Fluoride, Phytic Acid, non-ionic surfactant, and water; the new organic acid is composed of Ethylenediamine or Diethylenetriamine Or Triethylenetetramine or Tetraethylenepentamine reacts with citric acid to obtain organic acids. The metal surface treatment process steps are as follows: prepare a new organic acid, and use the new organic acid to compound with Zinc Nitrate, Sodium Molybdate, Nickel Nitrate, Sodium Hydrogen Fluoride, Phytic Acid, non-ionic surfactant, and water to obtain a metal surface treatment agent. The specific treatment process is: degreasing, water washing, water washing, pickling, neutralization, surface conditioning, surface treatment, surface post-treatment or water washing, and air drying. The invention can replace the existing phosphating process, and its technical advantages: environmental protection, simple operation, and superior to the phosphating process in terms of technical indicators.

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