TM 3-4230-237-10
0008 00
MIXING CHEMICALS OTHER THAN STB IN TANK - Continued
Sodium Hydroxide - Continued
6
5
7
6. Blend 175 pounds (1-3/4 drums) of caustic soda to the 350 gallons of water (1/2 lb of sodium hydroxide to 1 gal. of water)
through the hopper-blender. Keep the caustic soda moving through the hopper-blender by constant stirring. Blending will
require 35 to 40 minutes.
NOTE
If mixture is not used immediately, agitate until used. It must be agitated (through the agitation connection)
for 5 minutes before using.
7. If agitation is required, close VALVE NO. 1, disconnect the agitator-blender hose (5) from the blender pipe (6), and attach
it to the agitator pipe (7) on the tank unit.
Sodium Hypochlorite
Sodium hypochlorite may be produced by mixing calcium hypochlorite (HTH) (Page 0028 00-2, item 6) and sodium
carbonate (soda ash) (Page 0028 00-3, item 23) in the tank unit. The mixture produces sodium hypochlorite and a solid form
of calcium carbonate. The particles of calcium carbonate must be keep in solution by agitation of the mixture.
0008 00-12
