Frits do not dissolve in water, right? Wrong.

Wednesday 25th July 2012

This is an example of two types of crystals that have formed on the surface of a fritted glaze after a long period of storage (Ferro Frit 3249 in this case). Frits are formulated to give chemistries that natural materials cannot supply. To do that they have to push the boundaries of stability (solubility). Any frit that has an inordinately high amount (compared to natural sources) of a specific oxide (in this case MgO) or lacks Al2O3 (like Frit 3134) are suspect.

Pages that reference this post in the Digitalfire Reference Database:

Ferro Frit 3249, Water Solubility, Frit, Crystallization in aged glaze slurries

This post is one of thousands found in the Digitalfire Reference Database. Most are part of a timeline maintained by Tony Hansen. You can search that timeline on the home page of