Trimethylol amino methane ,tris has a certain buffer effect, the buffer range is pH7.0-9.2, for the preparation of buffers in biochemistry and molecular biology experiments, at the same time, it is also used to purify proteins, DNA, RNA and other biological molecules, and can also be used to prepare gel electrophoresis buffers, media and cell culture fluids. Pharmaceutical intermediates; For the preparation of surfactant and vulcanization accelerator; A water-soluble polymer containing Tris structural unit was prepared as a coating dispersant. Preparation of indoor formaldehyde adsorption materials.