128 COAL-TAR COLORS USED IN FOOD PRODUCTS. 



G. T. 502. 



Trade name. Rhodamin G and G extra. 

 Scientific name. Chiefly Triethylrhodamin. 

 Discovered and patented. 1891. 

 Shade. Bluish. Offered by 2 out of 12 sources. 



Nothing. 



FAVORABLE. 



UNFAVORABLE. 



1. CHLOPIN (p. 184} examined this color, and on his own experiments classes it as 

 "suspicious." The experimental data are as follows: 



Experimental data by Chlopin. 

 [1 gram= 167 mg= 117 grains.] 



G. T. 504. 



Trade names. Rhodamin B; Rhodamin O; Safranilin. 



Names under which it was offered on the United States market as a 

 food color in 1907. Rhodamin B extra; Rhodamin; Rhodamin B. 



Scientific name. Hydrochlorid of diethylmeta-amido-phenol- 

 phthalein. 



Discovered and patented. 1887. 



Shade. Bluish red. Offered by 5 out of 12 sources. 



FAVORABLE. 



1. LIBBER (p. 141): A young female rabbit received 339 milligram body weight, or 

 237 grains per 100 pounds, five times on alternate days. "During the whole 

 period the animal seemed to be perfectly at ease, was lively, displayed good 

 appetite, and gained steadily * * * ." The gain in weight was, roughly, 

 7 per cent. 



UNFAVORABLE. 



1. CHLOPIN (pp. 182, 183} examined this color, and on his own experiments classifies 

 it as "not poisonous, but not entirely indifferent; suspicious." The experi- 

 mental data are as follows: 



