Description :
This product is a white rhombic crystal with unpleasant smell.It will develop to pink when heated to 230°C.It is easily soluble in water,soluble in alcohol,acetone,methanol,glacial acetic acid.Lightly insoluble in chloroform,petroleum ether, toluene, acetic acid and acetic anhydride.But insoluble in ether.Its solution is colorless and it presents acid reaction.The melting point is  256°C.It is used as the color reagent of iron, cobalt, nickel, aluminum.Used to detect cadmium, cobalt, hydrogen cyanide, iron, magnesium, manganese, mercury, nickel and silver and zinc.Used in organic synthesis.This product should be sealed in a dry place form light.