Lead-tin yellow is a synthetic lead stannate produced by heating mixtures of lead and tin oxides at 650-850°C. Two types exist: Type I (Pb₂SnO₄) was widely used from the 14th to mid-18th centuries; Type II (PbSn₁₋ₓSiₓO₃) appeared occasionally. Described by Cennini as “giallorino” and noted as both natural mineral and artificial product. The most important yellow in European Renaissance painting, it then disappeared from use around 1750. Its existence was forgotten until re-identified by Kühn in 1968 through scientific analysis of Old Master paintings. Produces warm, opaque yellows ranging from pale lemon to golden depending on firing temperature and composition. Stable in most conditions, including alkaline environments with a limited documented use in fresco, but incompatible with sulfur-containing pigments, forming black lead sulfide. Highly toxic.
Usage Timeline:
| Pigment | Prehistory <3000 BCE | Antiquity 3000 BCE–500 CE | Medieval 500–1400 CE | Early Modern 1400–1800 CE | Industrial 1800–1950 CE | Present 1950–today |
|---|---|---|---|---|---|---|
| Lead-Tin Yellow |
Key Properties:
| Properties: | Pale warm lemon to golden yellow; Opaque; Good tinting strength; High refractive index, excellent hiding power |
| Usage: | 14th century to mid-18th century; lost until rediscovered 1968 |
| Source: | Artificial/Alchemical |
| Toxicity: | High toxicity (lead) |
| Fresco: | Limited |
| Tempera: | Yes |
| Oil: | Yes |
| Chemical description: | Type I: Pb₂SnO₄; Type II: PbSn₁₋ₓSiₓO₃ |
| Visualization: | X-ray (bright/radio-opaque), visible microscopy |
| Identification: | XRF (Pb, Sn), Raman, SEM-EDS |