CAS Registry Number

CAS 16872-11-0 — Fluoboric acid, 50 wt% solution in water

Fluoboric acid is a 50% aqueous solution of boron tetrafluoride (BF₄⁻), primarily used in electroplating (e.g., copper and nickel) for improved corrosion resistance and conductivity, as well as in semiconductor manufacturing and as a flux in metal soldering. It is a clear, colorless liquid with a pH of ~1–2 and negligible vapor pressure at ambient temperatures. The product has a CAS number of 16872-11-0, a molecular weight of 86.8052 g/mol, and requires no special storage precautions beyond ambient conditions. Molekula supplies Fluoboric acid, 50 wt% solution in water, from research to bulk quantities with full documentation and ISO 9001:2015 traceability.

Also known as: Tetrafluoroboric acid, 48% · Tetrafluoroboric acid solution