Nickel fluoborate enables high-speed nickel plating with superior deposit properties compared to Watts baths. Produces hard, bright nickel coatings for engineering and decorative applications at significantly higher current densities.
Nickel(II) tetrafluoroborate, formula Ni(BF4)2, formula weight 232.30 g/mol (anhydrous). Supplied as a clear green aqueous solution at 45-50% concentration. Density approximately 1.55 g/cm3 at 50% w/w. Aqueous pH typically 1-3. The dissolved species is the aquated [Ni(H2O)6]2+ cation paired with BF4- anions. Hexahydrate solid form (CAS 14708-14-6) also exists.
Plating-grade Ni(BF4)2 conforms to ASTM B689 (engineering nickel deposits) and AMS 2424 (high-strength steel applications). The fluoborate plating bath chemistry is described in standard plating handbooks (Lowenheim, Modern Electroplating). Pharmacopeial and food-contact grades are not specified for this compound.
CAS 14708-14-6. UN 3260 — Class 8 (Corrosive), PG II/III depending on concentration. GHS pictograms: GHS05 (corrosive), GHS07 (harmful), GHS08 (health hazard — nickel sensitiser), GHS09 (environmental hazard). REACH registered. Listed under SVHC candidate list for nickel sensitisation effects. RoHS Annex II — nickel compounds permitted in industrial applications.
| Grade | Typical Specification | Common Use |
|---|---|---|
| 50% Solution | ~50% w/w | High-speed engineering nickel plating |
| Battery-Precursor | Low-Fe, low-Cu | Lithium-ion cathode material synthesis |
| Catalysis Grade | 99%+ anhydrous | Lewis-acid catalysis, organic synthesis |
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