CALOMEL FUMIGATION.

Recent Advances in Fumigation

Controlled formaldehyde fumigation system.

A comparative study of formaldehyde (HCHO) fumigation was carried out by controlled vaporization, using an electric vapor generator, and by the Formalin-permanganate method. Determination of vapor levels as well as bactericidal action showed the generator to be more effective. Maximum achievable fumigant levels were temperature dependent and related to the equilibrium vapor concentration of HC...

Fumigation and Trapping of Mosquitoes

LIEUTENANT-COLONEL, I.M.S. Commanding Officer, Indian Military Hospital Nasirabad Owing perhaps to the unsatisfactory results of fumigation and spraying, measures for dealing with the adult mosquito in anti-malarial work have tended to become more defensive than offensive. The War Office report on the health of the army for the year 1931, page 111, under the heading anti-malarial measures reads...

A solvated zinc analogue of the calomel-dication.

The synthesis and characterisation of the solvent-stabilized salt [Zn2(THF)6](2+)[BAr4(F)]2(-) (1) is presented, which features the dizinc dication [Zn2](2+) as an analogue of the calomel dication [Hg2](2+). The labile tetrahydrofuran (THF) solvate molecules of 1 can be readily substituted by other ligands. Reaction with the strong donor ligand PMe3 (Me = CH3) leads to the Zn(ii) complex [Zn(PM...

Soil fumigation: principles and application technology.

The principal soil fumigants and their order of discovery are carbon disulfide, chloropicrin, methyl bromide, 1,3-dichloropropene, ethylene dibromide, 1,2-dibromo-3-chloropropane, and methyl isothiocyanate. Biological activity of soil fumigants ranges from limited to broad spectrum. Fumigants diffuse through the continuous soil air space as gases. Physical and chemical characteristics determine...