Description:
This product is a colorless transparant cubic crystal or white powder with the meling point 1353℃ and the boiling point 2260℃.It is soluble in hydrochloric acid, hydrogen nitrate ,hydrofluoric acid and ammonium chloride solution,lightly  soluble in water.It is middle toxic.It is used in preservative, metal heat treatment,ceram,enamel,glass manufacture,metallurgy and instrument industries.This product should be sealed in a shaded and dry place.