Azo Dye Properties
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Questions and Answers

What is the biggest advantage of azo dyes?

  • Fastness properties
  • Energy efficiency
  • High intensity colors
  • Cost-effectiveness (correct)

    • What is required for the general formula for making an azo dye?

  • A coupling component and a diazo component (correct)
  • Two inorganic compounds
  • Only one organic compound
  • Three organic compounds

    • How can the change from trans to cis isomerism in azo dyes be effected?

  • By heating at high temperatures
  • By increasing the pressure
  • By exposure to UV radiation (correct)
  • By adding a third organic compound

    • How are all reactions carried out during the production of azo dyes?

    <p>In water</p> Signup and view all the answers

    What is a key factor in the cost of chemicals related to the manufacturing of azo dyes?

    <p>Scalability of the reactions</p> Signup and view all the answers

    What does the elimination of photochromism in some dyes help achieve?

    <p>Stability of dyes</p> Signup and view all the answers

    Azo dyes are known for their low intensity colors compared to other dye classes.

    <p>False</p> Signup and view all the answers

    The cost-effectiveness of azo dyes is not influenced by the manufacturing processes involved.

    <p>False</p> Signup and view all the answers

    A coupling component and a diazo component are required to make an azo dye.

    <p>True</p> Signup and view all the answers

    Isomerism in azo dyes cannot be affected by exposure to UV radiation.

    <p>False</p> Signup and view all the answers

    The elimination of photochromism in some dyes has not been a focus of development efforts.

    <p>False</p> Signup and view all the answers

    Photochromism leads to an irreversible color change in azo dyes exposed to UV radiation.

    <p>False</p> Signup and view all the answers

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