PARAOXYBENZOIC ACID. 349 



Chloranisic acid, C 8 H 7 C1O S , is produced by conduct- 

 ing chlorine into melted anisic acid. Small, colorless 

 prisms ; fuse at 180 ; sublimable ; insoluble in water, 

 soluble in alcohol. Brom,anisic acid and iodanisic add 

 are very similar to the chlorinated acid. Distilled 

 with baryta, they yield substitution-products of anisol. 



Nitroanisic acid, C 8 H 7 (:N"0 2 )0 3 , is formed when 

 anisic acid, or the oils which anisic acid yields by 

 oxidation, are boiled with nitric acid until completely 

 dissolved. Small, lustrous prisms, that fuse at 175- 

 180, and are volatile only with partial decomposition. 

 But slightly soluble in water and cold alcohol, easily 

 in hot alcohol. Treated in alcoholic solution with 

 ammonium sulphide, it is converted into 



Amidoanisic acid, C 8 H 7 (NH 2 )0 3 = 



C 6 H 3 (ira 2 ) coQH Cr J stallizes from alcohol in 

 short, four-sided prisms. Difficultly soluble in water, 

 easily in hot alcohol; fuses at 180; not volatile with- 

 out decomposition. Combines with bases and acids, 

 forming salts. 



{0 C 2 H 5 

 CO OH i g k- 



tained from paraoxybenzoic acid and paracresol-ethyl- 

 ether in the same way as anisic acid. Colorless nee- 

 dles ; very difficultly soluble in boiling water. Fuses 

 at 195, and sublimes without decomposition. 



Chlorparaoxybenzoic acid, C 7 H 5 C10 3 , lodo-, and 

 Diiodoparaoxybenzoic acids, are crystallizing acids, 

 which are prepared like the substitution-products of 

 salicylic acid. 



Nitroparaoxybenzoic acid, C 7 H 5 (N0 2 )0 3 , is formed 

 by treating paraoxybenzoic acid with very dilute nitric 

 acid. Small, flesh-colored crystals. Treated with tin 

 and hydrochloric acid it is reduced, forming amido- 



enzoicacid^W(^W)Q^^ll\^W) j 

 30 



