[adrian_b]

Besides lead, there is a second element which greatly reduces the risk of tin whiskers, when alloyed to tin: antimony.

However the proposals of replacing the tin-lead alloys withe tin-antimony alloys have been rejected due to the fear that antimony is also toxic.

While antimony in high doses is indeed quite toxic, it is less dangerous as a pollutant than lead, because it does not have the same tendency for very long time accumulation in animal bodies and such a strong effect on the nervous system.