608 FOODS AND FOOD ADULTERANTS, 



PERCENTAGE COMPOSITION. 



Total carbonic acid, COz 9. 55 



Sodium oxide, Na- 2 O 10.31 



Potass! n in oxide, K 2 O 4.51 



Annnonia, NH 3 .22 



Aluminium oxide, Al 2 Oa 3.25 



Calcium oxide, CaO .35 



Sulphuric acid, SO 3 - 7.85 



Tartaric acid, C 4 H 4 6 (?) 



Starch 31.54 



Water of combination and association (including tartaric acid) by differ- 

 ence .. 32.42 



100.00 



In this and the following sample no satisfactory estimation of the 

 tartaric acid could be obtained in presence of the alum. Both contain 

 free tartaric acid, and the potash present is probably combined as bi- 

 tartrate. This sample contains a trace of phosphoric acid. This form 

 of mixed powder should undoubtedly be condemned. 



5523. Miles' Premium Baking- Powder. 

 [Made by Joseph H. Lnrzelere & Co., Philadelphia, Pa.] 



Available carbonic acid per cent.. 3.56 



Cubic inches per ounce of powder at 212 F 42. 8 



PERCENTAGE COMPOSITION. 



Total carbonic acid, CO 2 3. 43 



Sodium oxide, Na 2 O 10.05 



Potassium oxide, K 2 O 4,78 



Calcium oxide, CaO .28 



Ammonia, NH 3 .73 



Aluminium oxide, A1 2 O 3 3.59 



Tartaric acid, C 4 H 4 O 6 (*) 



Sulphuric acid, SO 3 9.65 



Starch 16-72 



Water of combination and association (including tartaric acid) by differ- 

 ence .. 48.77 



100.00 

 ALUM AND PHOSPHATE POWDERS. 



5510. Henkels' Baking- Powder. 

 [Made by Uenkels Bros., Patersou, N. J.) 



Available carbonic acid per cent.. 7. 7 I 



Cubic inches per ounce of powder at 212 F 93.0 



