The normal alkanes decane, undecane, and dodecane have been brominated photochemically in both liquid and vapor phases. Partial separation of products has been achieved by column and gas-liquid chromatography and distillation methods. Infrared and nuclear magnetic resonance spectroscopy and mass spectrometry were used to identify the products. The product distributions In the liquid and vapor phases were found to be similar, with a slight preference being Indicated for substitution at the 2 position.

No systematic studies have been reported correlating t h e physical properties of brominated kerosene with t h e degree of bromination. T h e present paper represents such a study for a kerosene fraction boiling between 180 and 220°C obtained from a Kuwait oil field and having a low aromatic content (high furfural miscibility temperature). This kerosene was brominated from 6.5 to 36% bromine content in steps of approximately 0.2 mol of bromine. T h e products have been checked for purity by gas chromatography and characterized by their ir, uv, and nmr spectra. T h e measurements comprise elementary analysis, refractive index, surface tension, furfural point, kinematic viscosity, specific gravity, and molecular weight. These data are correlated with t h e degree of bromination and t h e average molecular composition obtained.

Initial experiments in which ZnSe was sealed in Pyrex tubes with dry gaseous HC1 gave small quantities (<10% yield) of HvSe, H2, and Se after being heated as high as 773 K for 16 h. The rate was slow but catalysts might be found to speed the reaction which could also be driven under pressurized HC1 to shift the equilibrium. An experiment was also tried using HBr instead of HC1 with essentially identical results. ConclusionsConditions have been found under which ZnO, Se, and S02 react to produce ZnSe and ZnS04-The reaction proceeds rapidly to equilibrium at 773 K without detectable side reactions.Hydrolysis of ZnSe to give H2Se was found to go rapidly and quantitatively with dilute HC1 and slowly with dilute H2SC>4. Experiments also indicate concentrated HC1 will rapidly and completely hydrolyze ZnSe at ambient temperature using minimal quantities of water and HC1, and presently provides

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