Carbazotic acid 83.79 Potash 16.21 ------ 100.00 _Carbazotate of Soda_—crystallizes in fine silky yellow needles, having the general properties of the salt of potash, but soluble in from 20 to 24 parts of water, at 59° F. _Carbazotate of Ammonia_ forms very long, flattened, brilliant, [p213] yellow crystals, very soluble in water. Heated carefully in a glass tube, it fuses, and is volatilized without decomposition; heated suddenly, it inflames without explosion, and leaves much carbonaceous residue. _Carbazotate of Baryta_, obtained by heating carbonate of baryta, and carbazotic acid with water. It crystallizes in quadrangular prisms of a deep colour, and dissolves easily in water. When heated, it fuses, and is decomposed with very powerful explosion, producing a vivid yellow flame. The explosion is as powerful as that of fulminating silver; a solution of chloride of potassium to which carbazotate of baryta has been added, produces a precipitate of the potash salt, and not more than 1-1/2 per cent. of potash remains in solution. 100 parts of the crystallized salt contain,— Carbazotic acid 69.16 oxygen of the acid 16 Baryta 21.60 " earth 1 Water 9.24 " water 8 ------- 100.00 _Carbazotate of Lime_, obtained like the salt of baryta, forms flattened quadrangular prisms, very soluble in water, and detonating like the salt of potash. _Carbazotate of Magnesia_ forms very long indistinct needles, of a clear yellow colour; is very soluble, and detonates violently. _Carbazotate of Copper_, prepared by decomposing sulphate of copper by carbazotate of baryta: it crystallizes with difficulty, the crystals being of a fine green colour; it is deliquescent; when heated, it is decomposed without explosion, and even without inflammation. _Carbazotate of Silver_.—Carbazotic acid readily dissolves oxide of silver, when heated with it and water; and the solution, gradually evaporated, yields starry groups of fine acicular crystals of the colour and lustre of gold; the salt dissolves readily in water; when heated to a certain degree, it does not detonate, but fuses like gunpowder. _Proto-Carbazotate of Mercury_, obtained in small yellow triangular crystals, by mixing boiling solutions of the carbazotate of potash or soda, and proto-nitrate of mercury. It requires more than 1200 parts of water for its solution: for its perfect purification, it should be heated with a solution of chloride of potassium, the insoluble portion separated whilst the liquid is lost, and the peculiar salt allowed to deposit as the temperature falls. When heated, it behaves like the salt of silver.