KODALK Question.

[Keith Tapscott.]

I know that Borax is disodium tetraborate (decahydrate) and that Kodalk is sodium metaborate.

Is Kodalk the 4-mole or the 8-mole metaborate?

 

[Rudeofus]

This page claims Kodalk is the octahydrate. Check out (there was a url link here which no longer exists), too.

 

[Keith Tapscott.]

This page claims Kodalk is the octahydrate. Check out (there was a url link here which no longer exists), too.

So the 8-mole then. Thank you for the links.

 

[Trask]

How does one know if it is 4-mole or 8-mole? Looking at Photographer's Formulary, for example, they simply list the chem as sodium metaborate, no further information. More broadly, is there a qualitative difference between the two?

 

[Rudeofus]

Photo Formulary provides an MSDS on their product page, which states that their Sodium Metaborate product is also the 8-mole version.

 

[Trask]

Thanks, Rudeofus -- I forgot about the MSDS.