The 1,5-disodiumoxyhexamethyltrisiloxane has been isolated in high yield with a purity of up to 98%, by simple interaction of dimethylsiloxanes with sodium hydroxide. The reasons of high selectivity of the reaction towards 1,5-disodiumoxyhexamethyltrisiloxane were analyzed. It was found that variation of reaction time, type of dimethylsiloxane precursor and ratio between sodium hydroxide and dimethylsiloxanes in wide range led to the materialization of most part of used sodium hydroxide in 1,5-disodiumoxyhexamethyltrisiloxane. Its fast crystallization and precipitation from the homogeneous reaction media were found to be the main reason of the high selectivity of the reaction towards 1,5-disodiumoxyhexamethyltrisiloxane. The crystalline structure of 1,5-disodiumoxyhexamethyltrisiloxane was determined and its packaging peculiarities were discussed and illustrated.

通过二甲基硅氧烷与氢氧化钠的简单相互作用，高产率地分离出1,5-二异氧基六甲基三硅氧烷，其纯度高达98％。分析了对1，5-二异氧基六甲基三硅氧烷的反应的高选择性的原因。发现反应时间，二甲基硅氧烷前体的类型和氢氧化钠与二甲基硅氧烷之间的比例的宽范围变化导致在1，5-二异丙氧基六甲基三硅氧烷中大部分使用的氢氧化钠的物化。发现其从均相反应介质中快速结晶和沉淀是反应对1，5-二异丙氧基六甲基三硅氧烷具有高选择性的主要原因。1，晶体结构