UN 1408 Ferrosilicon, silicon < 25 % IMDG-Code, Amdt. 42-24 (Shortinfo)

This substance, when it contains less than 30% or not less than 90% silicon, is not subject to the provisions of this Code.

If the chemical or physical properties of a substance covered by this description are such that, when tested, it does not meet the established defining criteria for the class or division listed in column 3, or any other class or division, it is not subject to the provisions of this Code except in the case of marine pollutant where 2.10.3 applies.

Requires a certificate from the maker or shipper, stating that the shipment was stored under cover, but in the open air, in the size in which it was packaged, for not less than 3 days prior to shipment.