- Lightest, smallest, and most powerful of the fluxes
- Fluxing action begins around 1472°F
- less volatile than sodium oxide at higher temps
- One of the alkali fluxes
- Has strong color response similar to that of sodium or potassium oxides
- however, produces different color effects
- Brightening colors with as little as 1 percent present in the recipe
- Can produce beautiful
- blues with copper
- Pinks with cobalt
- Can produce beautiful
- Adding 1-2% can reduce melting temperature of glaze by one cone
- Has low viscosity and surface tension
- Produces soft glaze surfaces
- strong fluxing action allows for more silica, alumina, or calcium oxide to create a stronger glaze surface
- Encourages textured look in glazes, like mottled colors, streaks, and or color variations in thick and thin coats.