BAKING POWDERS. 615 



PROBABLK PERCENTAGE COMBINATION. 



Sodium bicarbonate, NaHCO 3 - 17. 22 



(Residual sodium oxide, Na 2 O) -- 4.85 



Ammonia alum, anhydrous: 



A1 2 (SO 4 ) 3 15.55 



(NH 4 ) 2 SO 4 1.09 



NH 3 76 



17. 40 



Acid phosphate of lime, anhydrous: 



Ca 3 (P0 4 ) 2 6.40 



H 3 PO 4 8.31 



14. 71 



Starch 32.85 



Water of association (phosphate) and crystallization (alum) 12.97 



100. 00 



5524. Brunswick Yeast- Powder. 

 [Manufactured in New York for M. <fe. P. Metzger, 417 Seventh street, Washington, D. C.] 



Available carbonic acid per cent.. 9. 1 



Cubic inches per ounce of powder at 212 F 117. 8 



PERCENTAGE COMPOSITION. 



Total carbonic acid, CO 2 11.49 



Sodium oxide, Na 2 O 10.87 



Calcium oxide, CaO 2.22 



Aluminium oxide, A1 2 O 3 3. 35 



Ammonia, NH 3 .. 1.59 



Phosphoric acid, P 2 O 5 5. 11 



Sulphuric acid, SO 3 : 10.14 



Starch , 34.97 



Water of combination and association by difference , 20.26 



100. 00 



PROBABLE PERCENTAGE COMBINATION. 



Sodium bicarbonate, NaHCO :i .* 21.93 



(Residual sodium oxide, Na 2 O) 2.78 



Ammonia alum, anhydrous : 



A1 2 (SO 4 ) 3 11.15 



(NH 4 ) 2 S0 4 3.86 



NH 3 (iO 



15. 61 



Acid phosphate of lime, anhydrous: 



Ca3(PO 4 ) 2 3.56 



H 3 PO 4 5.63 



-. 9.19 



Starch 34.97 



Water of association (phosphate) and crystallization (alum) 15.52 



100.00 



