What are the functions and uses of phenothiazine?

Phenothiazine is an organic compound with molecular weight of 199.272 and molecular weight of C12H9NS. It is yellow to green gray powder or flake crystal. Easily soluble in benzene, soluble in ether and hot acetic acid, slightly soluble in alcohol and mineral oil, almost insoluble in petroleum ether; Chloroform and water. Long term storage color is dark, easy to oxidize, and can sublimate under the sun. As an excellent polymerization inhibitor of alkenyl monomer, it is widely used in the production of acrylic acid, acrylate, methacrylate and vinyl acetate, and also in medicine. Dye synthesis. Polyether. Antioxidant and rubber aging agent. It is also used as an insect repellent for livestock. Pesticide for fruit trees.

effect:

Phenothiazine is a kind of organic aromatic compound, which is composed of two benzene rings connected by sulfur and nitrogen atoms. Yellow or grayish green prismatic crystals are recrystallized from ethanol or benzene, and yellow leafy crystals are precipitated from toluene or butanol and volatilized together with water vapor. Insoluble in water. Petroleum ether and chloroform, slightly soluble in ethanol and mineral oil, soluble in ether and acetone, easily soluble in benzene and hot acetic acid, solubility 25 ℃ (g / 100g): acetone 25.40. Ethanol 3.40. Benzene 32.0. In sunlight and air, the color becomes darker, and 0.3% methylamine can be added for protection during storage. When there are impurities, the color is easily darkened. Gas decomposition produces toxic nitrogen oxide and sulfur oxide gas.

Phenothiazine sublimates, has a weak odor, stimulates the skin, causes rash, is absorbed by the skin, and causes visceral disorders. Oral ld505000mg / kg in rats. The maximum concentration in the workplace is allowed to be 5mg / m3. The laboratory simultaneously heats diphenylamine and sulfur until no hydrogen sulfide gas is released. Phenothiazine is an intermediate in the manufacture of methylene blue dyes, and can also be used to manufacture chlorpromazine, perphenazine, methionine and other important tranquilizers and antihistamines.

In addition, phenothiazine can also be used as polymerization inhibitor of vinyl acetate, raw material of rubber antioxidant, synthetic dye, medicine, pesticide for fruit trees and insect repellent for livestock.

Purpose:

Phenothiazine is an intermediate of fine chemicals such as drugs and dyes, and an additive for synthetic materials (polymerization inhibitor for production of vinylon). Insecticides for fruit trees and insect repellents for animals. It has a significant effect on cattle, sheep and horses, stomach torsion worm, nodular worm, mouth suppressor nematode, chaenorhabditis and sheep neck nematode.

Mainly used as acrylic acid and acrylate. High efficiency polymerization inhibitor for methacrylic acid and ester monomers.

The alias is thiodiphenylamine. It is mainly used as a polymer for the production of acrylic fat. It is also used in the synthesis of drugs, dyes and synthetic material additives (such as vinyl acetate polymer and rubber agent raw materials). It is also used as an insect repellent for livestock and an insecticide for fruit trees.

This product is widely used in the production of acrylic acid, acrylate, methacrylate and vinyl acetate.