White to grayish white powder or block, hygroscopic strong;The boiling point of 500 ℃ (vacuum);Melting point is 400 ℃;Solubility: soluble in water, liquid ammonia, not soluble in ether, benzene, hydrocarbon;Density: relative density (water = 1) 1.07;Stability: stability;Danger mark 10 (wet inflammable goods);

Main purpose: used for making other borohydrosalt, reducing agent, wood pulp bleaching, plastic foaming agent.