Lead, Red
A standard material in Glazecalc's library: its oxide analysis, unity contribution and hazards.
What it is
- Kind
- Fluxes
- Status
- Historical
- Formula
- Pb₃O₄
- Similar materials
- Lead Bisilicate Frit (Potclays 2261) , Lead Sesquisilicate Frit (Potclays 2262)
- Source
- Theoretical formula
Toxic heavy metal. Serious hazard from dust, can leach into solutions. Trace amounts can cause behavior changes in children and hamper learning.
Oxide analysis and unity formula
Glazecalc has the analysis of Lead, Red as moles of each fired oxide per formula. The unity contribution is the moles of each oxide in the amount of Lead, Red that holds 1.0 mole of flux, which is how Glazecalc adds it into a recipe's unity formula.
| Oxide | Moles | Unity contribution |
|---|---|---|
| PbO | 1 | 1.000 |
- Equivalent weight
- 228.52
- Fired weight
- 223.2
- Loss on ignition
- 2.33%
The equivalent weight is the grams of Lead, Red that hold 1.0 mole of flux. The fired weight is what is left of that after firing.
Hazards and safety
This material contains lead oxide (PbO).
Hazards: Danger (Fisher UK SDS, Pb3O4): H302+H332 harmful if swallowed or inhaled; H351 suspected of causing cancer; H360Df may damage the unborn child; H362 may harm breast-fed children; H372 causes organ damage through repeated exposure; H410 very toxic to aquatic life.
Use it in a recipe
Add Lead, Red to a recipe in the Glazecalc calculator to see what it does to a glaze's unity formula.