White crystalline powder. The solubility in 100 g of water was 15.5 g at 20 °C. At 20 ° C, 0.1 g can be dissolved in 100 g of methanol. Almost insoluble in organic solvents such as benzene, acetone and ether.
Used as a flame retardant, water repellent and rust inhibitor for wood, fiber, paper, etc.