612 FOODS AND FOOD ADULTERANTS. 



5516. Patapsco Jiaking-Powder. 

 [Made by Smith, Hauway & Co., Baltimore, Md. In tin cans.] 



Available carbouic acid per cent.. 6. 7O 



Cubic inches per ounce of powder at 212 F 55. Hi 



PERCENTAGE COMPOSITION. 



Total carbonic acid, CO 2 7.62 



Sodium oxide, Na 2 O 9.21 



Aluminium oxide, A1 2 O 3 3. 61 



Calcium oxide, CaO 2.66 



Ammonia, NH 3 .88 



Phosphoric acid,P 2 O 5 3.28 



Sulphuric acid, SO 3 12.26 



Starch 36.39 



Water of combination and association by difference 24. 09 



100. 00 



PROBABLE PERCENTAGE COMBINATION. 



Sodium bicarbonate, NaHCO 3 14.54 



(Residual sodium oxide, Na^O) 3. 84 



Ammonia alum, anhydrous: 



A1 2 (S0 4 ) 3 12.02 



(NH 4 ). 2 SO 4 3.41 



15. 43 



Calcium sulphate, CaSO 4 3, 02 



Acid phosphate of lime, anhydrous: 



Ca 3 (PO 4 ). 2 2.62 



H 3 PO 4 2.87 



5.49 



Starch 36.39 



Water of association (phosphate) and crystallization (alum) 21. 29 



100. 00 

 5517. Patapsco Baking-Powder. 



[Made by Smith, Hanway & Co., Baltimore, Md. Sold in bnlk.] 



Available carbonic acid per cent.. 8. 42 



Cubic inches per ounce of powder at 212 C F 101. 1 



PERCENTAGE COMPOSITION. 



Total carbonic acid, CO a 9.55 



Sodium oxide, NasO 8. 33 



Aluminium oxide, A1 3 O 3 4.72 



Calcium oxide, CaO 2.66 



Ammonia, NH 3 



Phosphoric acid, P-jOf, 1-78 



Sulphuric acid, SO., l:i ls 



Starch 43.92 



Water of combination and association by difference 15.00 



100.00 



