Feldspath potassique FP325 (Ceradel)
A standard material in Glazecalc's library: its oxide analysis, unity contribution and hazards.
What it is
- Kind
- Feldspars and stones
- Formula
- SiO₂ 67.9%, Al₂O₃ 17.2%, K₂O 10.8%, Na₂O 2.5%, CaO 0.2%, Fe₂O₃ 0.1%, TiO₂ 0.03%, LOI 0.3%
- Also called
- FP325, Feldspath potassique (orthose) Ceradel, Ceradel potash feldspar
- Sold in
- EU
- Similar materials
- Feldspath potassique ICE 10 (Imerys Spain) , G-200 EU Feldspar
- Source
- Ceradel product page 'Feldspath potassique (FP325)'
Very white potash feldspar, mostly orthoclase, sold by the French supplier Ceradel; about 5% is retained on a 44 µm sieve.
Oxide analysis and unity formula
Glazecalc has the analysis of Feldspath potassique FP325 (Ceradel) as weight percent of the raw material. The unity contribution is the moles of each oxide in the amount of Feldspath potassique FP325 (Ceradel) that holds 1.0 mole of flux, which is how Glazecalc adds it into a recipe's unity formula.
| Oxide | Weight % | Unity contribution |
|---|---|---|
| SiO₂ | 67.9 | 7.127 |
| Al₂O₃ | 17.2 | 1.064 |
| K₂O | 10.8 | 0.723 |
| Na₂O | 2.5 | 0.254 |
| CaO | 0.2 | 0.022 |
| Fe₂O₃ | 0.1 | 0.004 |
| TiO₂ | 0.03 | 0.002 |
- Equivalent weight
- 630.68
- Fired weight
- 628.79
- Loss on ignition
- 0.3%
The equivalent weight is the grams of Feldspath potassique FP325 (Ceradel) that hold 1.0 mole of flux. The fired weight is what is left of that after firing.
Hazards and safety
Hazards: Fine dust contains respirable crystalline silica; avoid breathing it.
Use it in a recipe
Add Feldspath potassique FP325 (Ceradel) to a recipe in the Glazecalc calculator to see what it does to a glaze's unity formula.