Gas cylinders - Gas properties and associated classification (FTSC) codes (ISO 14456:2015)
SS-EN ISO 14456:2016/A1:2019
This International Standard gives a list of FTSC (fire potential, i.e. “oxidizing potential and flammability”, toxicity, state of the gas, and corrosiveness) codes determined according to the relevant properties of gases and of some liquids that are transported under pressure.
It does not cover gas material compatibility which is covered by ISO 11114 (all parts).