The method for preparing Hexamethyldisiloxane includes the following steps: adding chlorotrimethylsilane dropwise to water for hydrolysis reaction, separating the lower layer of concentrated acid water after the completion of the reaction, washing and filtering the upper oil phase to obtain a crude product and refining it. The product obtains high-quality hexamethyldisiloxane.According to this method, hexamethyldisiloxane is prepared by hydrolyzing chlorotrimethylsilane. In the whole preparation process, the use of
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