| 摘要 |
<p>A water dispersible organic gel which is a continuous system comprising effective amounts of: a hazardous product; optionally organic solvent; a water soluble or water dispersible surfactant, said surfactant being non ionic or anionic or cationic or a mixture of such surfactants, this surfactant satisfying to the following test: the hazardous product in the organic solvent, if present (50 g) and the surfactant (5 g) are added to an amount of water, at 50]C, which is sufficient to bring the volume of the mixture to 100 ml; the mixture is agitated so as to give a homogeneous emulsion and this is left to stand for 30 minutes at 50]C; the amount of oily layer which has separated out, and thus formed a distinct liquid phase must then be less than 20 ml; and a gelling agent which is either liquid or solid at 23]C and which is soluble at less than 10% in the liquid mixture of hazardous material and surfactant above 50]C, this gelling agent having, when it is a solid, a particle size at least 100 microns, and having less than 3% by weight of water.</p> |
