Hauv kev lag luam chemical, lim cov khoom siv los lim cov khoom siv tshuaj raw khoom, cov khoom nruab nrab, thiab cov khoom lag luam, xws li cov khoom siv tshuaj tiv thaiv organic, cov tshuaj siv tshuaj lom neeg, cov tshuaj ua kom zoo, cov khoom siv hauv cov tshuaj reactants thiab catalysts, purification ntawm cov organic solvents, thiab tshem tawm cov catalysts siv nyob rau hauv qee cov tshuaj tiv thaiv.