Organic impurities originating from the decomposition of addition agents, solution dragin, or the leaching of tank linings and racks can embrittle the copper deposit and affect the deposit's appearance and mechanical properties. A batch carbon treatment, Table VI, followed by filtration or continuous carbon filtration will remove most organics from the bath.
Chemistry of copper fluoborate baths. Table VII shows the composition of a typical acid copper fluoborate bath. If the fluoboric acid concentration is too low (pH above 1.7), the deposit may be dull, dark, and brittle. Add boric acid to stabilize the bath and to prevent the decomposition of the fluoborate to fluoride. The anode film and its care in a fluoborate bath are very similar to the requirements described for the copper sulfate bath.
Potential Acute Health Effects : Extremely hazardous in case of ingestion. Very hazardous in case of skin contact (irritant), of eye contact (irritant), of inhalation. Hazardous in case of skin contact (corrosive). Severe over-exposure can result in death. Inflammation of the eye is characterized by redness, watering, and itching. inflammation is characterized by itching, scaling, reddening, or, occasionally, blistering.
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