Inhibiting ferrous metal corrosion by aqueous ammoniate solution

Details Inhibiting ferrous metal corrosion by aqueous ammoniate solution Inhibiting ferrous metal corrosion by aqueous ammoniate solution

1997-01-21

1999-02-16

McKane, Joseph K.

Compositions

Preservative agents

Anti-corrosion

25238922, 25238962, 252391, 71 29, 71 30, 422 12, 562809, 562813, 562814, 564 14, 568 14, C07F 922, C01C 116, C01C 128

Patent

active

058716670

ABSTRACT:
Aqueous ammoniate solutions made during the manufacture of N-hydrocarbyl thiophosphoric triamides, consisting essentially of aqueous solutions of ammonium chloride and ammonia containing a water-soluble impurity normally tending to engender corrosion of ferrous metal are rendered corrosion-resistant by dissolving therein a small corrosion-inhibiting amount (e.g., up to about 5000 ppm (wt/wt) of a water-soluble salt or oxide of zinc, aluminum, arsenic, antimony or bismuth.

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