Stabilization and use of propargyl bromide
View Patent ↗Propargyl bromide is effectively stabilized against shock or thermal decomposition by use therewith of an environmentally acceptable inert liquid solvent that forms an azeotrope with propargyl bromide.
1. A method of effecting fumigation of an enclosed space infested or susceptible to infestation by pests, which method comprises introducing into said enclosed space a biocidally-effective amount of a vaporized mixture comprised of (i) vaporized propargyl bromide and (ii) a stabilizing amount of a vaporized environmentally-acceptable inert liquid solvent in an azeotropic composition with said propargyl bromide.
2. A method of claim 1 wherein said vaporized mixture is introduced into said enclosed space while entrained in a flow of carrier gas.
3. A method of claim 1 wherein an agricultural commodity or agricultural product is present within said enclosed space.
4. A method of claim 3 further comprising aerating said enclosed space with a non-toxic gas after completion of the fumigation.
5. A method of claim 4 further comprising removing propargyl bromide from the non-toxic gas used in the aeration by passing the non-toxic gas used in the aeration through an absorbent or retentive substrate.
6. A method of any of claims 1 – 5 wherein said liquid solvent consists essentially of a paraffinic and/or cycloparaffinic hydrocarbon solvent.
7. A method of claim 6 wherein said paraffinic and/or cycloparaffinic hydrocarbon solvent consists essentially of a mixture of C 8 paraffinic hydrocarbons.