Multiple choice

A foaming agent facilitates the formation of foam or helps foam to maintain its integrity by strengthening individual foam bubbles. Which of the following compounds is mainly used as a foaming agent in preparing polymer foams?

  1. Diazene

  2. Hydrazine

  3. Tetrazene

  4. Triazane
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Hydrazine N2H4 is a colourless flammable liquid with an ammonia-like odour. Hydrazine is highly toxic and dangerously unstable. It is mainly used as a foaming agent in preparing polymer foams. It also acts as a precursor to polymerization catalysts and pharmaceuticals.

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