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Chapter 30: Question 30.38 (page 1226)

Explain why diester A is now often used as a plasticizer in place of dibutyl phthalate.

Short Answer

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Answer

Diester A is often used as a plasticizer in place of dibutyl phthalate because it has higher molecular weight, giving it a higher boiling point. A will therefore be less volatile than dibutylphthalate, as a result, it will evaporate from a polymer less readily.

Step by step solution

01

Plasticizer

Rigid and brittle substances can be converted into soft, elastic material by adding a chemical called plasticizer. It should be low volatile.

02

Explanation

Diester A is often used as a plasticizer in place of dibutyl phthalate because it has a higher molecular weight, giving it a higher boiling point.

A will therefore be less volatile than dibutylphthalate, as a result, it will evaporate from a polymer less readily.

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