PHLORIDZ1N. 875 



C 14 H 5 O 4 ,C1. This compound is formed by passing a current 

 of dry chlorine through dry salicylous acid. It crystallizes in 

 yellowish oblique rhomboidal tables of a pearly lustre and 

 peculiar aromatic odour. It fuses and sublimes unaltered. It 

 combines directly with the alkalies., and is precipitated from 

 these combinations by acids without undergoing the smallest 

 change. This acid itself has been compared with the chloro- 

 chromic, and these salts viewed as salicylates of metallic 

 chlorides. 



Chlorosalicylimide, chlorosamide, C 42 H 15 C1 3 O 6 N 2 ; is salicy- 

 limide in which 3 atoms of hydrogen are replaced by 3 atoms 

 of chlorine. It is a yellow mass insoluble in water, formed by 

 directing a current of ammoniacal gas upon chloro salicylic acid, 

 so long as water is disengaged. 



Corresponding bromo salicylic and iodosalicylic acids exist, 

 which undergo the same transformations with ammonia. 



Nitrosalicylic acid, spiro'ilic acid (Loewig) ; C 14 H 5 O 8 N. Fum- 

 ing nitric acid has a violent action upon salicylous acid, nitrous 

 fumes are abundantly evolved, with the formation of a dark 

 yellow mass, which volatilises when distilled with water ; this 

 matter has not been analysed. When, on the other hand, 

 nitric acid of ordinary strength is digested upon salicylous acid, 

 peroxide of nitrogen is evolved, and a crystalline mass remains, 

 which may be purified by washing it with water and then dis- 

 solving it in alcohol. Nitrosalicylic acid crystallizes in small 

 yellow prisms, the alcoholic solution of which dyes, the skin 

 and nails yellow ; it forms crystallizable salts with the alkalies ; 

 ammonia produces with it a deep blood red colour ; with the 

 perchloride of iron it assumes a cherry red tint. Its salts have 

 not been sufficiently examined ; their probable formula is 

 14 H 4 O 3 , NO 4 . 



CHAPTER VII. 



PHLORIDZIN AND THE BODIES DERIVED FROM IT. 



Formula, C 42 H 29 O 24 =C 42 H 23 O 18 + 6HO, according to Mulder, 



