As the use of white carbon black becomes more and more extensive, it is gradually known by people. Many customers ask for white carbon black detection methods, and we explain the detection methods:

Accurately weigh about 0.3g of white carbon black sample, and then wash it into a 300mL plastic cup with 20-30mL hot water. Add 10mL 150g/L potassium fluoride solution and 10mL nitric acid, wash the weighing bottle with hydrochloric acid for 3-5 times. After cooling, add solid potassium chloride, stir and crush the undissolved particles until saturated. Cool and place for 10min. Filter with fast filter paper, and wash the plastic cup and sediment with 50g/L potassium chloride solution for 2-3 times. Neutralize the unwashed acid with 0.15mol/L sodium hydroxide standard titration solution, carefully stir the filter paper and then scrub the cup wall until the solution turns red.