Question

Washing after neutralization is necessary to ensure:

• A. removal of excess alkali
• B. removal of chromium hydroxide formed
• C. removal of neutral salts
• D. effective fixation of dyes and fat liquors

Hint:

Always wash leather thoroughly after neutralization to prevent any lingering alkali that could interfere with the dyeing or finishing process.

Answer 1

The Correct Option is A

After the neutralization of leather, it is necessary to wash it to remove any remaining excess alkali. This step is crucial as any residual alkali can affect the subsequent processes such as dyeing and fat liquoring, as well as the overall quality of the leather. Removing excess alkali ensures the leather is properly prepared for further treatment without causing damage or undesired reactions.