Silicone building sealants are condensed through chemical reactions to cure volatile small molecules. This type of product can be classified according to the different chemical reactions, that is, the small molecules that are removed. There are two types of products currently on the market: one is acid glue, this type of product is acidic, and the small molecules released during curing are acetic acid, which has a sour taste, has certain corrosiveness to some metal materials, and has certain stimuli to the human body And corrosive. Another type of product is neutral gum. This type of product is neutral. It is divided into alcohol-based glue and ketoxime based on the small molecules released during curing. The small molecule released during the curing process of alcohol-based glue is methanol, which has no corrosive and irritating odor. Ketoxime releases ketoxime when cured, which has a greater odor than alcohol-based gums. The two types of products differ in odor and properties.