Abstract: Various halogenated aromatic compounds, particularly polychlorinated biphls, and the like, are dehalogenated by reaction with alkali metal in the presence of liquid hydrosiloxane. A selected solvent or diluent may be present. The alkali metal halide reaction product may be removed by washing. It has been found substantially complete dehalogenation is achieved readily at ambient temperatures when the hydrosiloxane is present. The dehalogenated aromatic moiety normally is recovered intact. This method has been found very effective in the destruction and removal of PCB contaminants.

Abstract: Long-acting androgenic compositions comprising C.sub.4 -C.sub.6 cycloalkyl carboxylic acids of testosterone and a pharmaceutically acceptable carrier medium. The ester can be dissolved in an acceptable oily medium or suspended in an aqueous medium in the form of micronised particles or in the form of milled particles.

Abstract: A process is disclosed for producing ethylbenzene from the catalytic alkylation of benzene in a multibed reactor wherein a portion of the normal overhead polyethylbenzene recycle stream is diverted into a lower section of the reactor to increase conversion and lower xylene by-product production.

Abstract: A solid base which is obtainable by reacting alumina with an alkali metal hydroxide and an alkali metal hydride or reacting water-containing alumina with an alkali metal hydride in an amount more than the molar equivalent of water container in the water-containing alumina, at a temperature of 200.degree. to 500.degree. C. in an inert gas atmosphere can effectively catalyze various reactions, particularly isomerization of olefins.