on Nitropicric Acid* 39 



line scales of a golden lustre, very closely resembling chlor- 

 anile or iodide of lead. When heated, it melted, forming a 

 brownish liquid, and readily sublimed, yielding sulphur-yellow 

 crystals. It is nearly insoluble in water, slightly soluble in cold, 

 but tolerably soluble in hot alcohol and in sether. Bromanil 

 crystallized out of alcohol, when analysed, gave the following 

 results : — 



0-3695 grm., burnt with chromate of lead, gave 0*2325 grm. 

 of carbonic acid. 



[The small quantity of water found was equal to 0*19 per 

 cent, of hydrogen.] 



0*3925 grm., burnt with caustic lime, gave 0*6985 grm. of 



bromide of silver. 



Theory. Found. 



Ci2=^72 16*98 17-16 



Br4=320 75*47 75*73 



0* = 32 7-55 7*11 



424 100-00 . 100*00 



Bromhydranil, C^^ Br'* H^ 0*. — When sulphurous acid gas is 

 passed through hot spirits of wine containing an excess of brom- 

 anil, the bromanil gradually dissolves, and a colourless solution 

 is produced. When this solution is sufficiently concentrated, 

 bromhydranil is deposited in colourless crystals, which have a 

 mother-of-pearl lustre. When bromanil is boiled with an 

 aqueous solution of sulphurous acid, bromhydranil is also pro- 

 duced, but extremely slowly, because bromanil and bromhydranil 

 are both nearly insoluble in water. 



Bromhydranil is very soluble in alcohol and in sether, but it 

 is nearly insoluble in water, and is therefore precipitated as a 

 white crystalline powder from its concentrated alcoholic solutions 

 on the addition of water. When heated, it melts and readily 

 sublimes, forming soft colourless scales. 



0*9412 grm. of bromhydranil, crystallized out of spirits of 

 wine, when burned with chromate of lead, gave 0*5915 grm. of 

 carbonic acid, and 0*0485 grm. of water. 



Found. 

 17-14 



0-55 



426 100*00 



Bromanilic Acid, C^^ Br^ H^ O^. — When bromanil is thrown 

 into hot potash lye, it immediately dissolves, forming ^ deep 



