421-500ML - 

Fluoboric Acid, Stannous Fluoroborate, Thiourea , Liquid Tin

Quickly tin-plates copper circuits on PC Boards in 5 minutes at room temperature. No mixing or dilution required, provides excellent solderability, protects from oxidation.
Stable at normal temperatures and pressures.Wear appropriate protective eyeglasses or chemical safety goggles. Wear appropriate protective clothing to prevent skin contact. Use a NIOSH approved respirator when necessary for personal protection. Use adequate general or local exhaust ventilation to keep airborne concentrations below exposure limits for ventilation