88 COAL-TAR COLORS USED IN FOOD PRODUCTS. 



FAVORABLE. 



1. Permitted by Confectioners' List. 



2. WEYL(p.JJ5): "Nonpoisonous * * * Archil Substitute * * *." 



Describing experiments on three dogs, as follows: A. 430 milligrams per 

 kilogram body weight, or 301 grains per 100 pounds body weight, on each of two 

 successive days, and double the dose on the fourth day, producing no vomiting, 

 but a tendency to vomit, a slight albuminuria and colored urine. B. 182 mil- 

 ligrams per kilogram body weight, or 127 grains per 100 pounds body weight, 

 administered daily for one month; results similar to foregoing, but no colored 

 urine. C. 105 milligrams per kilogram body weight, or 116 grains per 100 pounds 

 body weight administered subcutaneously, produced only slight albuminuria, 

 and no reduction in body weight, (p. 125.) 



G. T. 43. 



Trade names. Orange GT; Orange RN; Orange O; Orange N. 

 Scientific name. Sodium salt of toluene-azo-beta-naphthol-surpho- 

 nic acid. 



Discovered. 1879. 



Shade. Orange. Not offered. 



FAVORABLE. 



1. Permitted by Confectioners' List. 



UNFAVORABLE. 



1. Excluded by Austrian law. 

 . 2. Excluded by Swiss laws. 



G. T. 55. 



Trade names. Ponceau R; Ponceau 2 R; Ponceau G and GR; 

 Xylidin Red; Xylidin Scarlet. 



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

 food color in 1907. Scarlet; Orange R. 



Scientific name. Sodium salt of xylene-azo-beta-naphthol-disul- 

 phonic acid. 



STiade. Scarlet. Offered by 2 out of 12 sources. 



FAVORABLE. 



1. Permitted by Confectioners' List. 



2. WEYL (p. 31): "According to Cazeneuve and Lepine's experiments the follow- 



ing are not poisonous to human beings and dogs ' Ponceau R * 



3. ''Ponceau R (Ponceau 2 R, Xylidin Red, Xylidin Ponceau), not poisonous to doga 



neither by administration by stomach nor injection into blood. " (p. 115.) 



4. " Other Azo colors * * * 'Xylidin Red * * * are entirely nonpoisonous." 



(p. 148.) 



5. FRAENKEL(p.575): "That the monazo coloring matters examined by Cazeneuve 



and Lepine, as already above stated, were nonpoisonous, can be easily explained 

 by the constitution of these substances. These two investigators examined 

 * * * Ponceau R * * *." 



