GAS CARTRIDGE

摘要

A composition suitable for generation of carbon monoxide gas on being ignited comprising an oxidizing reagent and a carbon based fuel characterised in that it further contains a zinc and oxygen containing compound in an amount of 15 % or more based upon the weight of the final composition weight. Preferably the fuel is charcoal and the oxidising agent is a nitrate, particularly sodium nitrate. Preferably the zinc and oxygen containing compound is zinc oxide. Preferred ratio of sodium nitrate to charcoal is from 6:4 to 7:3 and the percentage of zinc oxide in the final composition is about 20 % by weight. A fumigant cartridge is provided having a fuse extending between its cardboard or paper container exterior and the composition of the invention contained therein such that in use ignition of the fuse will lead to ignition of the composition and resultant generation of carbon monoxide gas. The composition and cartridge has use in the safe humane killing of rabbits.