Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1984-10-11
1986-10-07
Evans, J. E.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
C07F 938
Patent
active
046158405
ABSTRACT:
Aqueous solutions of aminomethylenephosphonic acid selected from diethylenetriaminepenta(methylenephosphonic acid), diethylenetriaminetetra(methylenephosphonic acid), diethylenetriaminetri(methylenephosphonic acid) and mixtures thereof are stabilized against crystallization of said aminomethylenephosphonic acid by including non-oxidizing mineral acid in such solutions in an amount stoichiometrically equivalent to at least 10% hydrochloric acid by weight of the solution.
REFERENCES:
patent: 3974090 (1976-08-01), Mitchell
patent: 4477390 (1984-10-01), Ledent et al.
Ledent Michel A. O.
May Bronislav H.
Beusen J. H.
Evans J. E.
Kelley T. E.
Monsanto Europe S.A.
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