Lead-tin yellow

#E4C55CFormula Pb₂SnO₄Earliest recorded use c. 1300

7 eras13 artists14 colors

The yellow of the Old Masters, forgotten so completely that it had to be rediscovered in a laboratory in 1941 — nobody had made it for two hundred years, and nobody knew what the yellow in a Vermeer actually was.

Origin

Made by calcining lead and tin oxides together at high temperature, with the exact temperature determining which of two types results: type I, the common one, made around 650–800 °C, and type II, containing silicon, made hotter and associated with Florentine and Venetian painting. The technology comes out of the glass and ceramic industries, where lead-tin compounds were used as opacifiers, and it entered painting in the fourteenth century. Its historical names were vague and inconsistent — giallolino, massicot, and a dozen others used loosely for several different yellows — which is a large part of why the material was lost: the recipes were recorded under names that later readers could not match to a substance.

In art history

From roughly 1300 to 1750 this is the bright yellow of European painting, and it is everywhere once you know to look: the yellow of Vermeer's famous jacket, of Rembrandt's highlights, of Titian and Veronese and Van Eyck, of essentially every Old Master yellow that is not an earth. It appears in seven eras of this atlas. Then, in the middle of the eighteenth century, it disappears from the record entirely and abruptly — the last documented use is around 1750 — replaced by Naples yellow. The identification of the pigment was made by the German scientist Richard Jacobi at the Doerner Institute in 1941, working from paint samples, and lead-tin yellow went from an unknown to a standard reference within a decade. It is now one of the most reliable dating tools in technical art history.

In the studio

It is opaque, dense, warm and comparatively strong, with excellent covering power and a fast drying rate in oil — the lead content makes it behave much like lead white in that respect. It is completely lightfast and stable with almost everything, including in mixtures, which distinguishes it sharply from orpiment. It is toxic, being a lead compound, but no more so than the lead white that painters were already using by the kilogram. Its practical advantage over every other pre-industrial yellow is simply that it can be mixed freely, which is why it dominated for four hundred years.

Afterlife

It is manufactured again in small quantities, largely for conservation and for painters working in historical techniques, and it is expensive. Its qualities are genuinely distinctive — no modern yellow has quite the same opaque warmth — and its rediscovery is one of the more satisfying stories in the field: a material used by every major painter in Europe for four centuries, entirely lost, and recovered by chemical analysis of the paintings themselves.