Method for the preparation of pure carboxyethyl germanium sesquioxide
US5386046A · kind A · utility
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6References
8Claims
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Key dates
| Filing date | Mar 2, 1994 |
| Grant date | Jan 31, 1995 |
| Priority date | — |
| Expiry date | Mar 2, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F7/30
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
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 the production of pure crystals of trichlorogermane propionic acid which are converted to carboxyethyl germanium sesquioxide. The product has an LD.sub.50 value of at least 5 g/kg.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.