ANILINE COLOURS 



189 



Called also toluidine blue. 



Tritolylrosanilino, C 40 H 16 (C 1I H 7 ) 3 N S . 

 Chemical formulae unknown 



Eegina blue, opal blue, regina purple, 

 bleu de Fayolle, violet do Mulhouse, 

 Britannia violet, geranosine, violet im- 

 perial. 



Greens. 



C M H I3 (C 4 H S )N 3 ,2HO. 

 Known as Aldehyde green, aniline green, 

 viridine, and emeraldme. 



C W H 1!I (C 2 H 3 ) 6 N 3 ,2HO. 

 Known as iodine green and iodide of 

 methyl green. 



Chemical formulas unknown 

 Iodide of ethyl green, Perkin's green. 



Yellows. 

 Chrysaniline, C"HN 8 . 



Called also Phosphine, aniline yellow, 

 and yellow fuchsine, 



Nitrophenyldiamine, C 20 H S 8 ,HCL 



Chrysotoluidine, C 42 H 20 N J . 



Zinaline, C 10 H 19 N 2 0,(?). 



Chemical formulae unknown 



Dinitroaniline, Field's orange (?). 



Browns, 



Chemical formulae unknown. 

 Havanna brown, Bismarck brown, ani- 

 line brown, aniline maroon, Napoleon 

 brown. 



Greys. 



Chemical formulae unknown- 

 Aniline grey, argentine. 



Black. 



Chemical formulae unknown 

 Aniline black. 



COLOURS DERIVED FROM NAPHTHALINE OR NAPHTHYLHTDRATE (C 20 H 8 ). 



Reds, 



Chloroxynaphthylic acid, C 20 H 5 C10. 

 Called also pseudoalizarine, naphthylic 

 red, and chloronaphthaline acid. 



Chemical formulae unknown 



Eoseonaphthaline, carminaphtha. 



Yellows. 

 Binitronaphthaline, C 20 H 8 (N0 4 ) 2 . 



Called also binitronaphthal, naphthala- 

 mine yellow, naphthylic yellow, golden 

 yellow, and Manchester yellow. 

 Binitronaphthylic acid 



C 20 H 5 (N0 4 ) 2 0,HO. 



Known also by the same names as the 

 above. 



Trinitronaphthylic acid 

 C 20 H 4 (N0 4 ) 3 0,HO. 



COLOURS DERIVED FROM CARBOLIC ACID AND PHENIC Aero, PHENTLHYDRATE 

 OR PHENOL (C' 2 H 8 2 ). 



Beds. 



Picramic acid, C 12 H S (N0 4 ) 2 N0 2 . 

 Called also picramine acid. 



Coralline, C 20 H 8 4 . 

 Called also peonine. 



Coralline amide, C 20 H 9 N0 2 . 

 Called also red coralline. 



Blue. 



Isopurpuric acid, C 12 H 3 (NO') 2 N0 3 ,2C1. 

 Called also bicyanide of picramyl and 

 Grenat. 



Called also trinitrophenic acid and car- 

 bazotic acid. 



Aurine, C 21 H 12 0. 

 Called also rosolic acid. 



Browns, 



Picrate of ammonia 



NH<0,C' 2 H'(NO') 2 0. 

 Isopurpurate of potash. 



Chemical formulae unknown. 

 Phenyl brown, or rotheine, or pheni- 



Azuline (blue), C 24 H n N0 4 , and another 

 viridine (formula unknown), are both an 

 aniline and a carbolic acid colour, being 

 produced by the action of carbolic acid on 

 a derivative of aniline. 



Cyanine (blue), CH"NI, is described 

 in some works among the coal-tar colours, 

 but is derived from chinchonine. 



Green. 



Chemical formulae unknown 

 Chloropicrine. 



Yellows. 

 Picric acid, C 12 H 2 (N0 4 ) 3 0,HO. 



Among the blues and violets, the names Hofmann's blue or Hofmann's violet arc 

 seen frequently to occur. These are distinguished in commerce by suffixing the letters 

 B or E the number of times that either is repeated, showing the relative blueness or 

 redness of the dye. They range from BBBB to BEEE. The reddish shades are 

 those in which the least substitution has taken place, as in the monethyl- or mono- 

 phenyl-rosaniline, &c., while the bluest of these are those which are triethyl- triphenyl- 

 rosanilines, &c. The series of names given for triphenylrosaniline and the hydro- 

 chlorate of the same base are frequently interchanged. On the othyliodates and 

 ethylbromates. authorities appear to differ as to whether they really are ethyliodates, 

 &c., or not. The colours are prepared by the action of iodide of ethyl, &c. upon 

 rosaniliue or some of its salts, and iodine is given off in the operation ; but whether one 



