The present invention relates to a method for manufacturing liquid calcium citrate (C.sub.12H.sub.14CaO.sub.14) or mono calcium citrate powder by using shells and application thereof and, more specifically, to a method for manufacturing liquid calcium citrate by using shell powder and citric acid and mono calcium by drying same, and application thereof.

The present invention relates to a continuous process for hydrogenating halogen-containing silane compounds having at least three silicon atoms, in which at least one halogen-containing silane compound having at least three silicon atoms and at least one hydrogenating agent are converted continuously to form at least one hydridosilane compound having at least 3 silicon atoms and oxidized hydrogenating agent, and wherein oxidized hydrogenating agent is withdrawn and reduced, and the reaction product of this reduction reaction is sent back to the hydrogenation, to the hydridosilane compounds obtainable by this process and to the use thereof.