92 



COAL-TAR COLORS USED IN FOOD PRODUCTS. 



FAVORABLE. 



1. CHLOPIN (pp. 131-2) examined this color physiologically, and has classified it as 

 harmless. The experimental data are as follows: 



Experimental data by Chlopin. 



No. 1 (p. 7). 

 [1 gram=43 mg=30 grains.] 



No. 2. 

 [1 gram=156 mg=.109 grains.] 



1901. 

 Oct. 9 

 10 

 11 

 12 

 13 

 14 

 15 

 16 

 17 

 18 

 19 

 20 

 21 

 22-26 



Total... 



10 



6.4 



7.0 



30 

 350 



300 

 335 

 290 

 290 

 375 



320 

 360 

 360 



Dog well; urine yellow; no albumen. 



Do. 



Urine brown, acid; no albumen. 

 Urine light brown, acid; no albumen. 



Do. 



Do. 



Do. 



Do. 



Do. 



Do. 



Urine light brown, acid, no albumen; diarrhea. 

 Brown yellow, acid, no albumen no diarrhea. 

 Urine normal; dog is well. 



Do. 



1 Internally. 2 Subcutaneously. 



2. Permitted by the law of Italy. 



UNFAVORABLE. 



1. Forbidden by the Confectioners' List. 



DOUBTFUL. 



1. WINOGRADOW (Zts. Nahr. Genussm., 1903, v. 6, p. 589) says it noticeably retards 

 digestive action; not indifferent. 



G. T. 85. 



Trade names. Orange I; Alphanaphthol Orange; Naphthol Orange; 

 Tropseolin OOO; Orange B. 



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

 food color in 1907. Orange KZ; Orange 027. 



Scientific name. Sodium salt of para-sulphobenzene-azo-alpha- 

 naphthol. 



Discovered. 1876. 



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



