Jump to content

Recommended Posts

1 hour ago, High Bridge Pottery said:

For some reason I always assumed black iron oxide sold was FeO because it is black. After some googling people seem to say it is Fe3O4. The only MSDS I can find for black iron oxide says Fe2O3 so not much clarity there.

What am I buying?

I've always taken Black Iron Oxide to be Fe3O4 (Magnetite), and Red Iron Oxide to be Fe2O3 (Haematite).

I'm known to be wrong on a regular basis, however.

High Bridge Pottery likes this

Share this post

Link to post
Share on other sites

Black Iron oxide is FeO in glaze chem, Fe3O4 in the bag.  Hamada expressed a preference for blacksmith scale and that is proper FeO.

Hematite:  Fe2O3

Wustite:  FeO

Magnetite:  FeO.Fe2O3/ Fe3O4  —  a crystal (spinel) of FeO and Fe2O3.  

Metallic iron is just Fe.

Yellow iron oxide:  FeO(OH).nH2O


Edited by Tyler Miller

Share this post

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


Important Information

By using this site, you agree to our Terms of Use.