Auxiliary

Diphenyl carbonate, white crystalline solid. Insoluble in water, soluble in hot ethanol, benzene, ether, carbon tetrachloride, glacial acetic acid and other organic solvents. Diphenyl carbonate is mainly used to synthesize methyl isocyanate in pesticides, and then to prepare carbamate insecticide carbofuran. In addition, it is mainly used in the plastic industry to manufacture polyaryl carbonate and p-hydroxybenzoic acid polyester, monoisocyanate and diisocyanate. Plastic plasticizers can also be prepared. Used as solvent and heat carrier in chemical production.

2,2-Dibromo-2-cyanoacetamide is a white crystal, soluble in general organic solvents (such as acetone, benzene, dimethylformamide, ethanol, polyethylene glycol, etc.), slightly soluble in water. Its aqueous solution is relatively stable in acidic condition and easy to hydrolyze in alkaline condition. The product is a broad-spectrum and efficient biocide. Its molecules can quickly penetrate the cell membrane of microorganisms, act on certain protein groups, and make the normal redox termination of cells, thus causing cell death. In addition, its molecules can selectively bromine or oxidize the special enzyme metabolites in microorganisms, resulting in the death of microorganisms. It is mainly used as bactericide and algaecide to prevent bacteria and algae from growing in water for paper industry, industrial cooling water, air conditioning water, lubricating oil for metalworking, water emulsion, pulp, wood, plywood and coating, and fiber.

Glibenclamide, also known as youjiangtang and daantai, belongs to the second generation of oral sulfonylurea hypoglycemic drugs. Its action mechanism is the same as tolbutamide. Its hypoglycemic effect is the strongest among sulfonylureas, and its action intensity is 200 ~ 250 times that of tolbutamide. It can selectively act on the pancreas β Cells and promote the secretion of insulin, which can enhance the hypoglycemic effect of exogenous insulin and strengthen the post receptor effect of insulin. Oral absorption is fast and the protein binding rate is high. The effect begins when the chemical book is opened in 30 minutes, and the effect is the strongest in 1.5 hours, lasting for 16 ~ 24 hours. The distribution volume is 0.1l/kg, the plasma protein binding rate is 90% ~ 95%, and the half-life is 4 ~ 8 hours. It is mainly metabolized by the liver. There are six metabolites, two of which are known to be hydroxylates, which have no hypoglycemic effect. They are mainly discharged from the urine and a small amount from the stool. Clinically, it is mainly used to treat mild to moderate non-insulin-dependent diabetes mellitus.

TAIC has a wide range of applications. It is mainly used in Vulcanizing aids for rubber, thermoplastics, ion exchange resins, crosslinkers and modifiers of UV curable coatings and adhesives, as well as intermediates of flame retardants and photoresists. TIAC products are non flammable, non explosive and non hazardous to the environment. They are transported and stored as non dangerous goods. TAIC has stable chemical properties and can be stored in cool and dark conditions for a long time.

A hydrated form of silicon dioxide. It is commonly used in the manufacture of TOOTHPASTES and as a stationary phase for CHROMATOGRAPHY.Silica is a porous material, and its composition can be expressed by SiO2 · nH2O, in which nH2O exists in the form of surface hydroxyl. Soluble in caustic soda and hydrofluoric acid, insoluble in water, solvents and acids (except hydrofluoric acid). High temperature resistance, nonflammable, tasteless, odorless, with good electrical insulation.