檢視沉淀剂的原始碼

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中文名；沉淀剂

 
外文名；precipitant
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为了将溶液中的某一或某些组分进行分离，常常需要向溶液中加入一些[[物质]]与需要分离的组分进行化合，生成难溶解的化合物（也可能是气体），从而通过过滤、蒸发等[[操作]]达到分离纯化的效果。加进去的试剂就叫做'''沉淀剂'''。

合适的沉淀剂应具备下述[[条件]]：①能获得溶解度小的沉淀。②沉淀剂应易挥发或易分解。③沉淀剂本身的溶解度要尽可能大，以减少沉淀对它的吸附。④沉淀剂应有良好的选择性。<ref>[https://wenda.so.com/q/1486302970725772?src=180&q=%E6%B2%89%E6%B7%80%E5%89%82 沉淀剂的种类有哪些?],360问答 , 2014年05月09日</ref>