Potash Feldspar K200 (Thailand)
A standard material in Glazecalc's library: its oxide analysis, unity contribution and hazards.
What it is
- Kind
- Feldspars and stones
- Formula
- SiO₂ 66.9%, Al₂O₃ 18.14%, Fe₂O₃ 0.16%, TiO₂ 0.02%, K₂O 11.17%, Na₂O 2.96%
- Also called
- Feldspar K200, Potash Feldspar K200BL, Feldspar - Potash (TH), Walker BA350
- Made by
- Sibelco (product of Thailand)
- Sold in
- AU
- Similar materials
- Potash Feldspar (Valentine Clays) , Mahavir Potash Feldspar , G-200 EU Feldspar
- Source
- Sibelco ceramics product selector, porcelain tiles - feldspar (Feldspar K200, TH)
A Thai potash feldspar of the kind now sold as 'potash feldspar' in Australia; Walker Ceramics lists its BA350 as Thai and Blackwattle's SDS names 'Potash Feldspar K200BL' (Scott Chemicals). Main high-temperature flux for stoneware and porcelain glazes. The analysis is Sibelco's; that Australian shops' Thai potash feldspar is this K200 is inferred from its name and origin.
Oxide analysis and unity formula
Glazecalc has the analysis of Potash Feldspar K200 (Thailand) as weight percent of the raw material. The unity contribution is the moles of each oxide in the amount of Potash Feldspar K200 (Thailand) that holds 1.0 mole of flux, which is how Glazecalc adds it into a recipe's unity formula.
| Oxide | Weight % | Unity contribution |
|---|---|---|
| SiO₂ | 66.9 | 6.694 |
| Al₂O₃ | 18.14 | 1.070 |
| Fe₂O₃ | 0.16 | 0.006 |
| TiO₂ | 0.02 | 0.002 |
| K₂O | 11.17 | 0.713 |
| Na₂O | 2.96 | 0.287 |
- Equivalent weight
- 601.17
- Fired weight
- 601.17
- Loss on ignition
- 0%
The equivalent weight is the grams of Potash Feldspar K200 (Thailand) that hold 1.0 mole of flux. The fired weight is what is left of that after firing.
Hazards and safety
Hazards: SDS for Potash Feldspar K200BL (Scott Chemicals, 2021): feldspar 90-98%, quartz 2-10%. Avoid breathing the dust.
Use it in a recipe
Add Potash Feldspar K200 (Thailand) to a recipe in the Glazecalc calculator to see what it does to a glaze's unity formula.