- Titanium Dioxide aka Titania
- Opacifies glaze by creating small crystals within it
- Well suited for microcrystalline glazes
- Insoluble
- Melts at 3326°F
- Color response varies depending on amounts added to recipe
- Small amounts (1%) intensifies colors
- Moderate amounts (2-5%) mottles color
- High amounts ( 6-20%) it mutes colors and mattes the surface
- Gives bluish white streaks when combined with copper
- Can turn cobalt to shades of green
- One of few cases when cobalt is not some form of blue
- Accentuates color of clay body
- In presence of iron gives cream colors
- When you buy titanium dioxide it’s not completely pure
- Has impurities of alumina, silica and zirconium oxide
- Moderate expansion and contraction rate
- Moderate surface tension
- None toxic
- High viscosity
- Tends to stiffen glaze
- Insoluble sources of titania are rutile, titanium dioxide, and ilmenite (iron titanate).