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       TEAR GAS

     A terrorist who could make tear gas or some similar compound could use
it with ease against a large number of people.  Tear gas is fairly complicated
to make, however, and this prevents such individuals from being able to utilize
its great potential for harm.  One method for its preparation is shown below.

     EQUIPMENT
     _________

     1.  ring stands (2)
     2.  alcohol burner
     3.  erlenmeyer flask, 300 ml
     4.  clamps (2)
     5.  rubber stopper
     6.  glass tubing
     7.  clamp holder
     8.  condenser
     9.  rubber tubing
     10.  collecting flask
     11.  air trap
     12.  beaker, 300 ml


     MATERIALS
     _________

     10 gms  glycerine

     2 gms sodium bisulfate

     distilled water


1.)  In an open area, wearing a gas mask, mix 10 gms of glycerine with 2 gms
     of sodium bisulfate in the 300 ml erlenmeyer flask.

2.)  Light the alcohol burner, and gently heat the flask.

3.)  The mixture will begin to bubble and froth; these bubbles are tear gas.

4.)  When the mixture being heated ceases to froth and generate gas, or a brown
     residue becomes visible in the tube, the reaction is complete.  Remove the
     heat source, and dispose of the heated mixture, as it is corrosive.

5.)  The material that condenses in the condenser and drips into the collecting
     flask is tear gas.  It must be capped tightly, and stored in a safe place.


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