Laboratory Procedure for Determining Hydroxide and Carbonate in KOH

Procedure for determining carbonate and hydroxide in KOH solution.

1. This procedure is used to test KOH samples from production and 45% KOH samples from barrels as a receiving/inspection (R&I) operation.
2. The percent hydroxide concentration and carbonate content of potassium hydroxide and sodium hydroxide solutions can be determined by titrating a solution sample with standard acid.
3. The procedure should be repeated to ensure there are 2 samples tested from each sample bottle of production KOH turned into the chemistry lab.
4. Special care must be taken in sampling to obtain a representative sample and to avoid absorption of water and carbon dioxide.

It Provides information on:

1. Purpose of Process
2. Equipment
3. Materials
4. Preparations
5. Safety Requirements
6. Operator Responsibilities
7. Process Controls
8. Workmanship