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 Title: 

            Disk Chemistry

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 Authors:

          T J Millar, University of Manchester

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 Abstract: 

          A protostellar disk contains such a wide range of densities, temperatures, and radiation fluxes that a description of its chemistry is a non-trivial exercise. Such a description must include the gas-grain interaction, including accretion, surface chemistry and desorption, in addition to photoprocessing, and two- and three-body reactions. This complex chemistry must then be coupled to a realistic disk model. In this review I shall describe recent work in this area and outline some directions for future research.

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