Sodium hydroxide mixing cloudy

[reely989]

Hey guys I’m getting a really cloudy mixture even I’m mixing up my hydroxide. I’m using food grade and 75g/L. I was thinking this stuff mixed pretty clear in the past when I’ve used it. Is this an issue?

 

[Randy Holmes-Farley Verified Community Expert]

I'd let it sit and see if it stays cloudy. It might be tiny air bubbles from the heat of mixing, or maybe something insoluble, such as calcium hydroxide.

 

[reely989]

I'd let it sit and see if it stays cloudy. It might be tiny air bubbles from the heat of mixing, or maybe something insoluble, such as calcium hydroxide.

There’s a layer of something at the bottom. It’s clear above that. I am using rodi water. I’m not sure what could be causing so much precipitate. I share a container for dipping water out of my rodi and saltwater reservoirs as needed but it’s a 100 gallon container I’d think that residual amount of saltwater would be negligible.

 

[Randy Holmes-Farley Verified Community Expert]

There’s a layer of something at the bottom. It’s clear above that. I am using rodi water. I’m not sure what could be causing so much precipitate. I share a container for dipping water out of my rodi and saltwater reservoirs as needed but it’s a 100 gallon container I’d think that residual amount of saltwater would be negligible.

I'd just ignore the solids. Only a tiny bit of magnesium will cause precipitation.

 

[reely989]

I'd just ignore the solids. Only a tiny bit of magnesium will cause precipitation.

Thanks for the help!