According to the IMSBC Code, the substance is dangerous when transported in bulk (Class MHB) and has the following hazardous properties:
WF: solid that evolve flammable gas when wet and/or
WT: solid that evolve toxic gas when wet

Ferrosilicon is not subject to the provisions of the IMDG Code in the specified concentrations (see special provision 39 to UN No. 1408).