CYANOGEN AND ITS COMPOUNDS. 29 



Cyanogen, C 2 Az - 3.25 



1. Chloride of cyanogen, C 2 Az + Chi. = 775.* 



2. Bromide of cyanogen, C 2 Az + Br. = 13-25. f 



3. Iodide of cyanogen, C 2 Az + lod. 194 



4. Sulpho-cyanogen, C 2 Az + S 2 = 7-75. 



1. Cyanic acid, C 2 Az O + Aq = 5-375. 



2. Fulminic acid, 2(C 2 Az O) = 4-25. || 



3. Cyanuric acid, 3(C 2 Az O) + 3 HO - 7-625.1F 



1. Cyanate of ammonia, C 2 Az O -f Az H 3 + HO = 6*5. 

 Urea, C 2 Az O + Az H 3 + HO = 6-5. 



2. Cyanate of potash, C 2 Az O -f- KO = 11-375. And so of 



the other cyanates. 



1. Fulminate of mercury, 2 (C 2 Az O) + 2 (Hg O) = 35-5. 



2. Fulminate of silver, 2 (C 2 Az O) + 2 (Ag O) = 37-5. 



3. Fulminate of copper, 2 (C 2 Az O) + 2 (Cu O) = 14-25. 



4. Fulminate of Zinc, 2 (C 2 Az O) + 2 (Zn O - 14-5. And 



so of the other fulminates. 



1. Crystallized cyanuric acid, 3 (C 2 Az O) + 3 (HO) + 



4 Aq = 15.5. 



2. Cyanurate of ammonia, 3 (C 2 Az O) + Az H 3 + HO 



= 10-875. 



3. Cyanurate of potash, 3 (C 2 Az O) + 2 (HO) + KO = 



15-875. 



or 3(C 2 Az O) + HO + 2(KO)=20.75 



or 3 (C 2 Az O) + 3 (KO) = 35.625. 



4. Cyanurate of silver, 3 (C 2 Az O) + 2 (Ag O) + HO - 



37-75. 



or 3 (C 2 Az O) + 3 (Ag O) = 51-125. 



1. Hydrocyanic acid or prussic acid, C 2 Az H = 3-375.** 



2. Hydrocyanate of ammonia, C 2 Az H + Az H 3 = 5.5. And 



so of the other hydrocyanates. 



1. Cyanet of potassium, C 2 Az + K = 8-25. 



2. Cyanet of sodium, C 2 Az + Na = 6-25 



3. Cyanet of zinc, . C 2 Az + Zn = 7-375. 



4. Cyanet of iron, . C 2 Az -f Fe = 6-75. 



* See Inorganic Chemistry, ii. 234. f Ibid. ii. 238. 



t Ibid. ii. 239. Ibid. ii. 225. || Ibid. ii. 229. 



^ Ibid. ii. 227 ; and Vegetable Chemistry, p. '208. 

 * Chemistry of Inorganic Bodies, ii. 219. 



