12 ANIMAL ACIDS DESTITUTE OF AZOTE. 



Suberic acid thus obtained melts at 248 , and congeals into a 

 mass consisting of clear, fine, pointed needles. When heated in 

 a small glass flask, it generates a vapour highly impeding respi- 

 ration, which collects into drops and congeals into crystals, leav- 

 ing behind it a charry residue. The free acid precipitates ace- 

 tate of lead, and the precipitate is insoluble in water and in alco- 

 hol. Suberate of ammonia precipitates solutions of chlorides 

 of calcium, strontium, and barium upon the addition of alcohol. 

 It precipitates also the neutral salts of silver, mercury, zinc, and 

 tin, white. The last precipitate is readily soluble in alochol. 

 Sulphate of copper is precipitated bluish green, and persulphate 

 of iron brownish red. 



Bromeis found suberate of silver composed of 



Suberic acid, . . 42*1 or 10-543 

 Oxide of silver, . . 57-9 or 14-5 



100-0 

 Neutral suberate of lead was composed of 



Suberic acid, . . 42-38 or 10-297 

 Oxide of lead, . . 57-62 or 14- 



100-00 

 Disuberate of lead 



Suberic acid, . 19-58 or 10-228 

 Oxide of lead, . 80-42 or 28- 



100-00 

 Suberate of soda 



Suberic acid, . . 70-62 or 9-62 

 Soda, . . . 29-38 or 4- 



100-00 

 Suberate of ethyloxide 



Suberic acid, . 9-75 



Ether, . . . 4-625 



Hydrated suberic acid being analysed with oxide of copper, 

 was composed of C 8 H 6 O 3 -f HO = 10-875 ; so that the anhy- 

 drous acid has an atomic weight of 9-75. 



SECTION VI. OF SEBACIC ACID. 



Though sebacic acid is obtained during the distillation of tal- 



