Abstract: The disclosed compounds, such as 3-[5-(1-phenoxypropyl)-1,3,4-thiodiazol-2-yl]-4-hydroxy-1-methyl-2-imidazo lidinone are useful for controlling weeds postemergence and preemergence.

Abstract: The disclosed compounds such as 3-[5-(1-(2-nitrophenoxy)ethyl)-1,3,4-thiadiazol-2-yl]-4-hydroxy-1-methyl-2 -imidazolidinone are useful for preemergence control of weeds such as jimsonweed.

Abstract: The disclosed compounds such as 3-[5-[1-(2-methylphenoxy)ethyl]-1,3,4-thiadiazol-2-yl]-4-hydroxy-1-methyl- 2-imidazolidinone, control weeds preemergence and postemergence.

Abstract: Disclosed are 1-(1-chloropropyl)-2,4,6-triisopropylbenzene and the method of controlling weeds, particularly crabgrass, by preemergent application of the compound to the soil.

Abstract: C.sub.2 -C.sub.4 halogenated, e.g., chlorinated and brominated, hydrocarbons, such as vinyl chloride, present in a gas stream are removed therefrom, e.g., incinerated, by contacting the gas stream with an oxygen-containing gas in the presence of cobalt oxide catalyst at relatively low temperatures, e.g., 100.degree. C. Commonly, the halogenated hydrocarbon is present in the gas stream to be treated in small amounts, e.g., less than 0.05 weight percent. The temperature of treatment can vary, e.g., from 20.degree. to 500.degree. C., and can be adjusted within said range depending on the relative humidity of the gas stream treated to maintain catalytic activity. Preferably, treatment occurs under conditions of low relative humidity, e.g., less than 5 percent, and the catalyst is a hydrated cobalt oxide catalyst.

Abstract: C.sub.2 -C.sub.4 halogenated, e.g., chlorinated and brominated, hydrocarbons, such as vinyl chloride, present in a gas stream are removed therefrom, e.g., incinerated, by contacting the gas stream with an oxygen-containing gas in the presence of metal oxide catalyst system consisting essentially of the oxides of manganese and cobalt at relatively low temperatures, e.g., 100.degree. C. Commonly, the halogenated hydrocarbon is present in the gas stream to be treated in small amounts, e.g., less than 0.05 weight percent. The temperature of treatment can vary, e.g., from 20.degree. C. to 500.degree. C., and can be adjusted within said range depending on the relative humidity of the gas stream treated to maintain catalytic activity. Preferably, treatment occurs under conditions of low relative humidity, e.g., less than 5 percent, and the metal oxides of the catalyst system are hydrated.

Abstract: Vinyl chloride is incinerated at relatively mild temperatures, e.g., 20.degree. to 300.degree.C., by contacting it in a combustion zone with an oxygen-containing gas in the presence of hydrated metal oxide catalyst selected from the group consisting of the oxides of manganese, copper, and mixtures of said oxides. The temperature of incineration is adjusted within the range of 20.degree.-300.degree.C. depending on the relative humidity of the gases in the combustion zone to maintain catalytic activity. Commonly, the vinyl chloride is contained in a gas stream in small amounts, e.g., less than 0.05 weight percent.

Abstract: C.sub.2 -C.sub.4 halogenated hydrocarbons, e.g., chlorinated and brominated hydrocarbons such as vinyl chloride, present in a gas stream are removed therefrom, e.g., incinerated, by contacting the gas stream with an oxygen-containing gas in the presence of hydrated nickel oxide catalyst at relatively low temperatures, e.g., 20.degree.-500.degree. C. Commonly, the halogenated hydrocarbon is present in the gas stream in small amounts, e.g., less than 0.05 weight percent. The temperature of incineration is adjusted within the range of 20.degree.-500.degree. C. depending on the relative humidity of the gas stream to maintain catalytic activity.

Abstract: Chlorinated (alkylthio)phenols, chlorinated (alkenylthio)phenols, and chlorinated (cycloalkylthio)phenols are described which are useful as miticides. These phenols often possess herbicidal, insecticidal, and/or fungicidal properties. Examples of these compounds are 2,3,5,6-tetrachloro-4-(methylthio)phenol and 2,3,6-trichloro-4-(methylthio)phenol.