MULTIPURPOSE FIRE EXTINGUISHING POWDER Russian patent published in 1997 - IPC

FIELD: fire extinguishing powders for extinguishing ABC class fires and electric installations under voltage. SUBSTANCE: fire-extinguishing powder comprises ammophos with particle size of less than 50 mcm and highly dispersing hydrophobic silicon dioxide. The powder also comprises ammonium sulfate and dispersing alumosilicates with particle size of 50-150 mcm. The ratio of components is as follows, wt.-%: ammophos, 35-45; ammonium sulfate, 35-45; highly dispersive silicon dioxide, 0.5-6; and dispersive alumosilicate, the balance. EFFECT: improved properties. 3 cl, 1 tbl