Multiple choice

Which of the following is used to dye cotton with dark colours?

  1. Sulphur dyes

  2. Disperse dyes

  3. Reactive dyes

  4. Mordant dyes
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A Correct answer
Explanation

Sulphur dyes are two part developed dyes used to dye cotton with dark colours. The initial bath imparts a yellow or pale chart reuse colour. Sulphur Black 1 is the largest selling dye by volume.

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