Stabilizer for trichloroethylene

Abstract

The invention discloses a stabilizer for trichloroethylene. The stabilizer consists of an organic base, an antioxidant and an organic solvent, wherein the organic base is triethanolamine; the antioxidant is 2-isopropane, thymol and epichlorohydrin; and the organic solvent is isobutanol and diethylene glycol. The stabilizer disclosed by the invention has the following advantages: the composite stabilizer formulation is used for stabilizing trichloroethylene and ensuring that trichloroethylene does not deteriorate within 180 days, and simultaneously, the decomposition speed of trichloroethylene in a use process is reduced, and the use time is greatly prolonged. By utilizing the stabilizer, trichloroethylene can meet the requirement of the top-grade electronic cleaning industry on trichloroethylene quality, cannot damage and erode cleaned components and achieves the purpose of replacing imported trichloroethylene.

Description

technical field [0001] The invention relates to a stabilizer for trichlorethylene, which is suitable for long-term storage of trichlorethylene, in particular for long-term storage of electronic cleaning grade trichlorethylene. Background technique [0002] Trichloroethylene, a colorless transparent liquid with the smell of chloroform. Melting point: -87.1°C, boiling point: 87.1°C, relative density (water=1): 1.46, relative vapor density (air=1): 4.53. When exposed to fire or high heat, it can cause combustion and explosion. When it comes in contact with strong oxidants, it can undergo a chemical reaction. When exposed to light or in the presence of water or air, it will decompose and produce toxic phosgene and corrosive hydrogen chloride. Insoluble in water, soluble in ethanol, ether, miscible in toluene, acetone and most organic solvents. [0003] Trichlorethylene is the strongest solvent among C2 organochlorine solvents. It is the best metal degreasing lotion. It is main...

AI Technical Summary

Problems solved by technology

[0005] The domestic stabilizer used for trichlorethylene is usually a single organic base added to increase the pH value of the material, but it can only last for about 30 days, which is far behind the advanced level abroad. At the same time, some high-end electronic cleaning industries are not sensitive to trichlorethylene The quality of ethylene and the added stabilizer have special requirements, and the components to be cleaned cannot be damaged or corroded.

Images