Manganese Dioxide / Carbonate In Glaze Recipe

[emma_19 2]

Hi, I'm making a glaze which requires 0.5% manganese dioxide, however I only have manganese carbonate. Is it possible to substitute the dioxide for the carb and if so, does anyone know what percentage carbonate I should add?

 

Thank you

[Guest JBaymore]

I THINK you are confusing manganese dioxide with magnesium carbonate.  NOT the same stuff.

 

MnO₂ versus MgCO₃.

 

One sources manganese............. the other sources magnesium.  Totally different functions in a glaze.

 

best,

 

.....................john

[emma_19 2]

Thanks John for your reply.. I've actually got both manganese carbonate (light brown powder) and magnesium carbonate (white powder).

 

any idea if I can substitute?

 

Thanks

 

Emma

[TJR 361]

Manganese is a colourant used for making black in slips and on-glaze decoration.

Magnesiun is a flux to cause glazes to melt. Used a lot in white glazes as it goes cloudy in the fired glaze.

Not the same animal.

TJR.

[emma_19 2]

Hi, thanks,

 

I realise they're different, I'm not using the magnesium, I was just stating that I've got both so I know I'm not getting them mixed up.

 

I've got manganese carbonate and the recipe asks for manganese dioxide. So I was wondering if I could use the carbonate as a substitute for the dioxide?

[Min 1,627]

You can substitute 1 part of Manganese dioxide by 1 point 46 parts of Manganese Carb. 

[emma_19 2]

Thank you.

[Babs 619]

Hey Min what is your new avatar?

[Min 1,627]

Hey Min what is your new avatar?

 

Hi Babs, it's just a patch of dried mud.