• Formulating

  There are floc-looking things in my household cleaner

  Posted by kristianare on May 18, 2020 at 8:13 am

  I made a household cleaner which has a pH of ~14. Raw materials are tap water, KOH, NaOH, sodium polyacrylate, and NTA. It was mixed to homogeneity. After a day, floc-looking things are seen settling-down at the bottom of the container. A bit cloudy and color is brownish. I reviewed my chemistry, and flocs aren’t suppose to form at alkaline environment. What are those floc-looking things? By the way, when I used DI water, none of those things were formed. 

  kristianare replied 4 years, 6 months ago 3 Members · 3 Replies

  • cleaner
• 3 Replies

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  belassi

  Member

  May 18, 2020 at 6:34 pm

  By the way, when I used DI water, none of those things were formed. 
  - You answered your own question.

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  Pharma

  Member

  May 18, 2020 at 7:09 pm

  Precipitates from tap water are especially formed at alkaline pH. Depending on how much NTA you added (or TDS in your tap water, respectively), the only metal hydroxide which still may precipitate is magnesium hydroxide.

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  kristianare

  Member

  May 19, 2020 at 5:19 am

  @Belassi, @Pharma Thank you for answering my question. 

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