Introduction to the performance characteristics of phenothiazine
发布：2024/5/15 9:18:52
Application scope of phenothiazine:
This product is widely used as an excellent polymerization inhibitor for vinyl monomers in the production of acrylic acid, acrylic esters, and vinyl acetate. It is also used in the synthesis of drugs, dyes, polyethers, antioxidants, and rubber antioxidants. It is also used as an insecticide for livestock and fruit trees.
Phenothiazide action:
Phenothiazine is an organic aromatic compound composed of sulfur and nitrogen atoms connected to two benzene rings (the parent nucleus of phenothiazine). It crystallizes from ethanol or benzene as orthorhombic yellow or grayish green prismatic crystals, and from toluene or butanol as yellow leaf shaped crystals, which evaporate with water vapor.
Under sunlight and in the air, the color darkens, and 0.3% methylamine can be added for protection during storage. When there are impurities, the color is also prone to darkening. When encountering acid and acid vapor, it decomposes and produces toxic nitrogen oxide and sulfur oxide gases.
Phenothiazide has sublimation properties, a slight odor, and is irritating to the skin. It can cause rashes and can also be absorbed through the skin, causing visceral disorders. Rat oral LD50 5000mg/kg. The maximum allowable concentration in the workplace is 5mg/m3. The laboratory obtains it by heating diphenylamine and sulfur simultaneously until no hydrogen sulfide gas is released.
Application field:
1. Phenylthiazide is an intermediate in fine chemicals such as drugs and dyes. It is a synthetic material additive (used as an inhibitor in the production of vinylon), fruit tree insecticide, and animal repellent. Significant effects have been observed on the nematodes of cattle, sheep, and horses, such as the twisted stomach nematode, nodular nematode, mouth suppressor nematode, Charcot's nematode, and sheep's fine necked nematode.
2. Used as an efficient polymerization inhibitor for acrylic acid and acrylic ester monomers, methacrylic acid and ester monomers.
Mainly used as an inhibitor in the production of acrylic resin. It is also used in the synthesis of drugs and dyes, as well as as as as additives for synthetic materials (such as polymerization inhibitors for vinyl acetate and raw materials for rubber anti-aging agents). It is also used as an insecticide for livestock and fruit trees.
3. Mainly used as excellent polymerization inhibitors for vinyl monomers, it is widely used in the production of acrylic acid, acrylate, methacrylate, and vinyl acetate
Storage precautions:
Store in a cool and ventilated warehouse. Stay away from sparks and heat sources. It should be stored separately from oxidants and avoid mixing.
Equip corresponding types and quantities of fire-fighting equipment.
The storage area should be equipped with appropriate materials to contain leaked materials.
