HMTD is a primary explosive that can be made from hexamethy- lenetetramine, hydrogen peroxide and citric acid. This explosive is to be used with a booster explosive such as picric acid (Section I, No. 21) or RDX Section I, No. 15) in the fabrication of detonators (Section 6, No. 13).


  • Hexamethylenetetramine
  • Hydrogen peroxide
  • Citric acid
  • Containers, bottles or glasses
  • Paper towels
  • Teaspoon
  • Pan
  • Water
  • Tape


  • Drugstores under names of urotropine, hexamin, methenamine, etc.
  • Army heat tablets.
  • 6% hair bleach (or stronger if possible)
  • Drug stores or food stores (“Sour Salt”)


1. Measure 9 teaspoons of hydrogen peroxide into a container.

2. In 3 portions, dissolve 2-1/2 teaspoons of crushed hexamethy- lenetetramine in the peroxide.

3. Keep the solution cool for 30 minutes by placing container in a pan of cold water.

4 . In 5 portions, dissolve 4-1/2 teaspoons of crushed citric acid in the hexamethylenetetramine-peroxide solution.

5. Permit solution to stand at room temperature until solid par tides form fit the bottonr. of container.

NOTE: Complete precipitation will take place in 8 to 24 hours.

CAUTION: At this point the mixture is a primary explosive. Keep away from flame.

6. Filter the mixture through a paper towel into a container to collect the solid particles.

7. Wash the solid particles collected in the paper towel with 6 teaspoons of water by pouring the water over them. Discard the liquid in the container.

8. Place these explosive particles in a container and allow to dry.

CAUTION: Handle dry explosive with great care. Do not scrape or handle it roughly. Keep away from sparks or open flames. Store in cool, dry place.

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