Carbamide adducts of polymetalophosphamate

Abstract

There is disclosed a method of forming a urea adduct complex by reacting an aluminum hydrogen phosphate complex which is normally unstable in solution at a pH greater than 2.5 with sufficient urea that no precipitation of alumina occurs on addition of ammonia, and adjusting the pH of the resultant urea adduct complex with ammonia to a value of from 2.5 to 10. The urea adduct complexes of the invention are fire retardants and fire quenching agents and are useful as agricultural adjuvants.

Dependencies are inferred from the claim text.