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IMPROVED PROCESS FOR PRODUCING WATER-FREE ALUMINIUM-CHLORIDE WITH REACTING ALUMINIUM-OXIDE OR MATERIALS CONTAINING ALUMINIUM-OXIDE AND PHOSGENE OR CARBON-TETRACHLORIDE
IMPROVED PROCESS FOR PRODUCING WATER-FREE ALUMINIUM-CHLORIDE WITH REACTING ALUMINIUM-OXIDE OR MATERIALS CONTAINING ALUMINIUM-OXIDE AND PHOSGENE OR CARBON-TETRACHLORIDE