COLD MADE CHIP SOAPS.

To make chip soaps by the cold process a sweet tallow of low percentage of free fatty acid should be employed. The tallow is heated to 120° to 135° F. and the lye run in slowly at first and then the silicate of soda is added. The mass is then mixed until a finger drawn through the soap leaves a slight impression, then dropped into frames or barrels. Soaps containing a small percentage of fat should be well covered in the frame for twenty-four hours to retain their heat and insure proper saponification. The following formulae are suitable:

I.lbs.
Tallow1,200
Soda Lye, 35° B.850
Sodium Silicate750
II.
Tallow475
Ceylon Cocoanut Oil100
Soda Lye, 37° B.325
Potash Lye, 37° B.56
III.
Tallow500
Soda Lye, 37-1/2° B.297
Sodium Silicate416
Potash Lye, 37-1/2° B.37-1/2
IV.
Tallow450
Soda Lye, 37-1/2° B.255
Sodium Silicate450
Potash Lye, 37-1/2° B.50
V.
Tallow450
Soda Lye, 35° B.470
Sodium Silicate650
VI.
Tallow420
Sodium Silicate600
Soda Lye, 37-12° B.270