Multiple choice

Flame retardants are chemicals that inhibit or resist the spread of fire. Which of the following substances is primarily used as a flame retardant ?

  1. Zinc acetate

  2. Zinc ammonium chloride

  3. Zinc antimonide

  4. Zinc borate
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Zinc borate is an inorganic compound, a borate of zinc. It is a white crystalline or amorphous powder insoluble in water. Its toxicity is low. Its melting point is 980 °C. It is primarily used as a flame retardant in plastics and cellulose fibers, paper, rubbers and textiles.

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