Substituted ethane diphosphonic acids and salts
AssigneeMonsanto Company
InventorAl F. Kerst
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Abstract
New and useful substituted ethane diphosphonic acids and salts and esters thereof as exemplified by the ester compound having the formula ##EQU1## tetraethyl, 1,2 dihydroxy ethane-1,1-diphosphonate and processes for preparing the same which generically comprise the "de-oxiranization" of an epoxy ethane diphosphonate having the formula ##EQU2## wherein R.sub.3 is hydrogen, a metal ion, or an organic radical.
Claims5
An ethane diphosphonate having the formula ##EQU16## wherein X is a halogen and each R.sub.3 is individually selected from the group consisting of hydrogen, alkali metal ions, and ammonium ions.
2-hydroxy-1-chloroethane-1,1-diphosphonic acid.
Dependencies are inferred from the claim text.