To begin, weigh 49.0 to 50.9 milligrams of TCPP using an analytical balance. Round the weight to 1/10 of a milligram. Set the measured amount of TCPP aside, protected from light.
Based on the amount of TCPP, add the required amounts of purified water and isopropanol to a 100 milliliter glass beaker and cover it with parafilm to protect it from evaporation. Next, weigh the required amount of sodium bicarbonate based on the amount of TCPP and add it to the 100 milliliter beaker containing purified water and isopropanol. Cover the solution with parafilm to protect it from evaporation, and place it on a stir plate for approximately 10 minutes.
Once the contents are dissolved, ensure that the pH of the solution is between nine and 10. Next, carefully add the weighted TCPP, protect the solution from light, and stir it for approximately 30 minutes until dissolved. Store the solution in a polypropylene container at room temperature protected from light.
