Fluoroboric acid |
 Name: |
Fluoroboric acid; Fluoroboric acid; Hydrofluoroboric acid; Tetrafluoroboric acid |
| Molecular formula: |
HBF4 |
|
Molecular weight : |
87.83 |
| CAS NO.: |
16872-11-0 |
|
Use : |
In the cleaning of silicate and oxides on metallic surface; or in the cleaning of aluminum and alloy before plating. 2.5% solution is used in the electrolytic polishing of pure aluminum. |
|
Toxicity and protection : |
Highly corrosive to skin and mucous membrane; irritating to eyes and respiratory system. Max. concentration allowed is 2.5mg/m3. If contact eyes or body, wash eyes with clean water, and soap for body. If serious, go to the hospital. Respirator, rubber gloves and working clothes should be worn in operation.
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Packing and storage : |
In polyvinyl drum, net wt. 0.5KG, 25KG or 250KG/drum. It belong to Class II inorganic acide corrosives. IMDG NO.: 93010. Should be stored in cool and airy place. Closed tight, avoid rain and sunlight. Handle it with care, avoid impact or damage to the containers.
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| Properties |
Colorless transparent liquid, strong acid. Only exists with water. Industrial product is 42-48% water solution; relative density of 42% water solution is 1.32; relative density of 48% water solution is 1.37. It is stable in thick solution, and will be decomposed when heated to 130; Soluble in water and alcohols. It is highly corrosive and toxic! |
| Quality Index: |
Item |
Index |
A.R. |
C.P. |
Electroplating Grade |
Borofluoric acid( HBF4)%≥ |
40 |
40 |
40-50 |
Free boric acid( H3B03)% |
0.6 |
0.6 |
2.5 |
Chloride(Cl) % ≤ |
0.002 |
0.005 |
0.005 |
Sulphates( SO4 ) % ≤ |
0.001 |
0.002 |
0.003 |
Heavy metal ( pb ) % ≤ |
0.002 |
0.005 |
0.01 |
Ferrum( Fe ) % ≤ |
0.001 |
0.003 |
0.01 |
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