Method for the preparation of pure carboxyethyl germanium sesqui

Details Method for the preparation of pure carboxyethyl germanium sesqui Method for the preparation of pure carboxyethyl germanium sesqui

1995-01-31

1996-08-27

Nazario-Gonzales, Porfirio

Organic compounds -- part of the class 532-570 series

Organic compounds

Heavy metal containing

556 87, 556105, C07F 730

Patent

active

055502660

ABSTRACT:
A synthetic method for generating pure carboxyethyl germanium sesquioxide in the absence of toxic impurities. In the method germanium dioxide and metallic germanium are not used as starting materials. The method involves steps which ensure (a) full reaction of germanium tetrachloride to ensure none is available to form germanium dioxide, (b) removal of any germanium dioxide, (c) removal of any germanium tetrachloride later produced from any germanium dioxide and (d) final removal of any germanium dioxide.

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patent: 4956272 (1990-09-01), Kakimoto et al.
patent: 4973553 (1990-10-01), Miyao et al.

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