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Fluoboric acid
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Fluoroboric acid or tetrafluoroboric acid CAS 16872-11-0  is an inorganic compound with the chemical formula H3OBF4. It is mainly produced as a precursor to other fluoroborate salts. It is a strong acid. Fluoroboric acid is corrosive and attacks the skin. It is available commercially as a solution in water and other solvents such as diethyl ether. With a strength comparable to nitric acid, fluoroboric acid is a strong acid with a weakly coordinating, non-oxidizing conjugate base. It is structurally similar to perchloric acid, but lacks the hazards associated with oxidants.



Fluoroboric acid(HBF4),%       ≥50.0
Free boric acid(H3BO3),%      ≤0.60
Iron(Fe),%                             ≤0.01
Chloride(Cl),%                       ≤0.005
Sulfate(SO4),%                      ≤0.03
Fluosilicate(SiF6),%                ≤0.10
Appearance                            Colorless transparent liquid


Fluoroboric acid is a catalyst for aldehyde synthesis, a metal surface cleaner, a polish for lead electrolysis, a diazonium salt stabilizer and so on; 

It is also used to clean metal surface or before alloy electroplate. Fluoroboric acid is one component of preservatives for deactivating aluminum and steel phosphate, an optimum lead soluble electrolyte for lead storage battery, a enhancer of crude oil infiltration capacity in oil field exploitation, a raw material of making diazonium salt stabilizer and various fluoborate, alkylation and polymerization catalyst, a cleaner and corrodent of metal surface oxide, silicate film.


25kg/drum, 250kgs/drum


It should be stored in a shady, ventilating and dry storehouse. Its shelf life is one year. It can be still used if up to standard through retest after the specified date. Should start using the product in air-drying place. When radical changes of humidity occurs, it will recrystallize and agglomerate. Should pay attention to keep away from the radical changing environment during storage, and ensure good package.

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