Production of concentrated aqueous polyphosphate solutions

Details Production of concentrated aqueous polyphosphate solutions Production of concentrated aqueous polyphosphate solutions

1990-06-18

1991-07-30

Langel, Wayne A.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

423315, C01B 2541

Patent

active

050358715

ABSTRACT:
A concentrated aqueous alkali metal polyphosphate solution is prepared by adding polyphosphoric acid having a P.sub.2 O.sub.5 assay of about 82% to about 85% to a quantity of concentrated aqueous alkali metal hydroxide sufficient to neutralize the acid. The resulting polyphosphate solution is richer in pyrophosphate and tripolyphosphate moieties than the acid.

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