Why can cyanide compounds never be loaded in the same vehicle as acids, even in a case where the general segregation table might otherwise only call for a 4-foot separation?

Question

Accepted Answer

Because mixing cyanides with acids can generate deadly hydrogen cyanide gas, which 49 CFR 177.848(c) makes an absolute prohibition regardless of distance or barrier

Answer

Because acids will slowly corrode cyanide packaging over the course of a long haul

Answer

Because cyanide compounds are always classified as Class 1 explosives and explosives can't be mixed with anything

Answer

There's no federal rule on this, it's only an individual carrier's internal safety policy