36 DERIVATIVES OF METHYL ALCOHOL. 



afterward gently heating the whole. Liquid, of a 

 leeky odor, boiling at 13 ; specific gravity, 1.66.' 



Bromoform, CHBr 3 . Is produced by the action 

 of bromine on a solution of potassa in wood spirit. 

 Colorless liquid, boiling at 150-152; congealing at 

 9 ; of specific gravity 2.9. 



Carbon tetrabromide, CBr 4 . Is obtained by heat- 

 ing carbon bisulphide or bromoform with bromine in 

 the presence of iodine or antimony bromide (SbBr 3 ) in 

 sealed tubes to 150-160. Colorless, lustrous plates. 

 Fusing point, 91. Insoluble in water, easily soluble 

 in alcohol and ether. It is decomposed when heated 

 in an alcoholic solution. 



Methyl iodide, CIPI. Is prepared in the same 

 manner as the bromide. Colorless liquid of an ethereal 

 odor. Boils at 43 ; specific gravity, 2.2. 



Methylene iodide, CH 2 P. Is produced by the 

 action of sodium ethylate on iodoform, by heating 

 iodoform alone or with iodine, and can be prepared 

 most readily by heating chloroform or iodoform for 

 several hours with very concentrated hydriodic acid 

 to 125-130. Yellow liquid, of specific gravity 3.34. 

 Congeals at a low temperature, forming lustrous plates, 

 which fuse at +4. Boils at 180, undergoing partial 

 decomposition. 



Iodoform, CHI 3 . Is formed, when iodine, together 

 with caustic alkalies, acts on alcohol, aldehyde, acetone, 

 and a great many other organic bodies. Yellow scales, 

 which fuse at 119. Can be distilled with the vapors 

 of water without undergoing decomposition. Readily 

 soluble in alcohol and ether. 



Nitroform, CH(iN"0 2 ) 3 . The ammonium compound 

 of this body C(NH 4 ) (NO 2 ) 3 , a yellow, crystalline sub- 

 stance, soluble in water and alcohol, is produced when 

 trinitroacetonitrile (see fulminuric acid) is treated with 



