172 COAL-TAR COLORS USED IN FOOD PRODUCTS. 



favorably reported; (c) conflictingly reported; (d) not reported in 

 the literature as to their physiological action (see p. 63) ; in paren- 

 theses is given the number of sources out of a possible 12 offering 

 those colors on the United States market in the summer of 1907. 



I. Those colors which are certainly permitted: 



(a) None. (6) 4 (10); 5 (0); 462 (2); 512 (3); 517 (5); 520 (2); 600 (0); total, 7. 

 (c) 55 (2); 427 (2); 451 (5); 457 (0); total, 4. (d) 158 (0); 518 (2); total, 2. 



II. Those colors whose permitted or prohibited use is doubtful: 



(a) None. (6) 65 (2); 107 (7); 599 (0); total, 3. (c) 8 (5); 84 (2); 427 (2); 

 457 (0); 601 (1); total, 4. (d) 452 (2); 456 (0); 513 (0); 514 (0); total, 4. 



III. Those colors which are certainly prohibited: 



(a) 3 (0); (6) none; (c) 427 (2); (d) none. 



It will be noted that 427 appears in all three of Muttelet's classifi- 

 cations. The reason for this is that 427 is or has been marketed in at 

 least three different forms; of these the straight chlorhydrate is per- 

 mitted, the oxalate and the zinc chlorid double salt are of doubtful 

 admissibility, and the picrate is undoubtedly forbidden. 



Also 457 appears in Muttelet's Classes I and II because the "Bleu 

 Lumiere" of Muttelet's Class I is indistinguishable from his "Bleu 

 Lumiere" of Class II, when using the Green Tables as a guide. Fur- 

 ther, this list of Muttelet contains only 3 out of the 7 colors permitted 

 in Food Inspection Decision No. 76, namely, 4 and 517 of his Class I 

 and 107 of his Class II. 



An inspection of Muttelet's Class I discloses 13 Green Table 

 entries, of which only 7 have been reported in the literature, as 

 herein compiled and rated, in a favorable manner; of these 7, 2 were 

 not on the United States market in the summer of 1907 and of the 

 remaining 5, 2 are in the permitted list of Food Inspection Decision 

 No. 76; the remaining 3 are: 462. Acid Magenta (2); 512. Eosin 

 (3); 520. Kose Bengal (2), and the reasons for whose noninclusion 

 in the permitted list of Food Inspection Decision No. 76 have been 

 given (p. 167). 



SECOND INTERNATIONAL WHITE CROSS CONGRESS. 



The Second International White Cross Congress, held in Paris, 

 October 18 to 24, 1909, according to the Chemiker Zeitung, 1909, 

 page 1227, adopted the following list of colors which were said to be 

 proper for use in coloring food products. The figures in parentheses 

 are the Green Table numbers; the italicized numbers are those of the 

 permitted list of Food Inspection Decision No. 76. 



1. Erythrosin (516, 517). 



2. Rhodamin B (504). 



3. Bordeaux S (107). 



4. Bordeaux G (170). 



5. Fast Red E (105). 



6. New Coccin (106). 



7. Ponceau 2R (55). 



8. Xylidin Scarlet (55). 



