Aluminium phosphide, the precursor compound from which phosphine gas is generated, is available in different forms and can be supplied in aluminium bottles as tablets of about 3g each or as pellets of about 1g. Alternatively it can be supplied in fabric ‘socks’ or strips of cojoined paper sachets which enable the fumigant residues to be easily removed in the situation where it is undesirable to have fumigation residue remaining in the cargo. Generally, and as a rule of thumb, Degesch state that one 3g tablet of aluminium phosphide formulation will generate about 1g of phosphine gas.
Usually, the quantity of aluminium phosphide applied per hold is calculated Continue reading “Risks of in-transit fumigation leading to phosphine gas explosions”