In addition to the requisites stated in article 2085, it is indispensable, in order that a mortgage may be validly constituted, that the document in which it appears be recorded in the Registry of Property. If the instrument is not recorded, the mortgage is nevertheless binding between the parties.
The persons in whose favor the law establishes a mortgage have no other right than to demand the execution and the recording of the document in which the mortgage is formalized. (1875a)