METHOD OF PRODUCING WATER-RESISTANT AMMONIUM NITRATE (AMMONIUM SALTPETER) Russian patent published in 2011 - IPC C01C1/18 C05G3/10 

FIELD: chemistry.

SUBSTANCE: method of producing water-resistant ammonium nitrate involves its treatment with a water-repellent agent. Treatment is carried out by mixing ammonium nitrate with a hydrophobic additive in amount of not less than 0.1% of the mass of the product, where the hydrophobic additive used is a mixture of sodium or potassium silicates, metal fluorides or surfactants. The ammonium nitrate is dried at temperature 18-32°C in not less than 10 minutes.

EFFECT: method enables to obtain ammonium nitrate with high water resistance.

1 tbl, 1 ex