| abstract |
PURPOSE:A solvent capable of suppressing change of color and corrosion of copper, aluminum and steel, and casuing no change of quality under the metal materials, by adding benzotriazole as a stabilizer to a 1,2-dichlorofluoroethane solvent. CONSTITUTION:A 1,2-dichlorofluoroethane solvent, namely a mixed solvent of 1,2-diclorofluoroethane and 1,2-dichlorofluoroethane as main components, is blended with about 5-1,000wt. ppm based on the solvent of benzotriazole, so that the solvent is stabilized. The solvent may be blended with another stabilizer such as nitromethane, etc. USE:Useful for defatting and washing semiconductor materials such as silicone wafer, silicone ship, etc., semiconductors such as IC, SI, etc., electronic and electrical devices such as printed circuit board, etc., and precision instruments. |