Patent ID: 11865392
Assignee: FRS GROUP, LLC
Field: Machine tools (Mechanical engineering)
Classification: CPC A  C | IPC A  C

Claim 16:
17. A forest fire retardant concentrate, comprising:
a mixture of phosphates comprising:
diammonium phosphate;
monoammonium phosphate; and
at least one of a sodium phosphate salt, a calcium phosphate salt, or a potassium phosphate salt;

a corrosion inhibitor for at least one of iron, brass, aluminum, or magnesium present in the concentrate in an amount having a weight percent of about 0.1% to about 3.0% relative to total weight of the concentrate; and
a thickening agent, present in the concentrate in an amount having a weight percent of about 0.75% to about 5.0% relative to total weight of the concentrate;
wherein:
the concentrate has a molar ratio of ammoniacal nitrogen to phosphorus (N/P molar ratio) of less than about 1.05.