114 COAL-TAR COLORS USED IN FOOD PRODUCTS. 



2. WEYL (p. 65): "Experiments 1 and 2, in which 2 to 5 grams of the color were intro- 



duced directly into the stomach, demonstrated its harmlessness in this method 

 of administration." 



3. Buss lists it as nonpoisonous. 



UNFAVORABLE. 



1. Prohibited by Confectioners' List. 



2. WEYL (p. 65): "On the other hand, in a hypodermic administration, in two out of 



three cases abscesses and septic fever were induced." 



G. T. 399. 



Trade names. Sun Yellow; Curcumin S; Jaune Soleil; Maize. 

 Scientific name. Sodium salt of the so-called Azoxy-stilbene-disul- 

 phonic acid. 



Discovered. 1883. 



Shade. Yellow. Not offered. 



FAVORABLE. 



1. MEYER (/. Amer. Chem. Soc., 1907, v. 29, p. 897): A dog received 100 milligrams 

 per kilogram body weight, or 70 grains per 100 pounds, increased geometrically 

 through the fourth day, when diarrhea set in; up to this time the animal had 

 been given 19.27 grams, or 1,465 milligrams per kilogram body weight, equiv- 

 alent to 1,026 grains per 100 pounds body weight; the average dose per day 

 would have been 366 milligrams per kilogram body weight, or 256 grains per 

 100 pounds; the animal was given its fifth portion of coloring matter the same 

 size as the fourth, thereupon color was omitted, and for the following 7 days the 

 dosage of the third day, which amounted to 400 milligrams per kilogram body 

 weight, or 280 grains per 100 pounds body weight, was given; the urine was col- 

 ored orange throughout the entire test after the first day; the fecal matter also 

 was of orange color; slight diarrhea on the fourth and twelfth days of the test, 

 and vomiting on the fifth day, the cause of which does not seem to have been 

 definitely determined; the autopsy revealed nothing abnormal. 



G. T. 425. 



Trade names. Auramin; Auramin O; Pyoctanin Aureum. 



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

 food color in 1907. Auramin O; Auramin; Canary Yellow. 



Scientific name. Hydrochlorid of imido-tetramethyl-diamido- 

 diphenylmethane. 



Discovered. 1883. 



Shade. Greenish yellow. Offered by 3 out of 12 sources. 



FAVORABLE. 



Nothing. 



UNFAVORABLE. 



1. CHLOPIN (p. 157): On his own experiments classes it as poisonous.. The experi- 

 mental data are as follows: 



