Purifying method for chloroacetyl chloride

Abstract

The invention relates to a purifying method for chloroacetyl chloride. The method comprises the steps that commercially available chloroacetyl chloride is taken as raw materials, part of impurities are removed through activated carbon adsorption, zinc granules are adopted to neutralize acidic free matter in a chloroacetyl chloride solution and replace heavy metal ions, impurities with the low boiling point and the high boiling point are removed through three times of rectification and separation, and then the high-purity chloroacetyl chloride with the purity reaching 99.9999% is obtained. According to the purifying method for the chloroacetyl chloride, the raw materials are easy to obtain, the technology is simple, most of the technological processes adopt a physical means, no by-product is generated, pollution of the equipment impurities to the finished product can be reduced to the maximum degree through a quartz-made rectification device, and therefore the product purity is guaranteed. The high-purity chloroacetyl chloride prepared through the method can be applied to micro-electronic high and new technology industries such as semiconductor integrated circuit manufacturing and crystalline silicon solar cell manufacturing.