Hexamethlene phosphonate concentrate

Organic compounds -- part of the class 532-570 series – Organic compounds – Phosphorus acids or salts thereof

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562 16, C07F 938

Patent

active

056061064

ABSTRACT:
Concentrated aqueous hexamethylene phonic acid solutions are described containing, in addition to high levels e.g. 40%-50% of phosphonic acid a narrowly defined level of non-oxidizing mineral acid, preferrably hydrochloric acid.

REFERENCES:
patent: 3816333 (1974-06-01), King et al.
patent: 4477390 (1984-10-01), Ledent et al.
patent: 4548757 (1985-10-01), Wevers et al.
patent: 4615840 (1986-10-01), Ledent et al.
patent: 4728460 (1988-03-01), Ledent et al.

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