Scheele's green - CAMEO (original) (raw)

Description

A highly poisonous green pigment composed of Copper arsenite. Scheele's green was discovered in Sweden in 1775 by Carl W. Scheele, a German chemist, but he did not publish the recipe until 1778. It is a bright, warm yellowish-green with good opacity. Scheele's green was never widely used as a paint pigment because it was toxic and discolored in the presence of acid or sulfur fumes. Currently, copper arsenite is used as a rodenticide, Insecticide, fungicide, and wood preservative.

copper arsenite; cupric arsenite; Pigment Green 22; CI 77412; mineral green; ash green; vert de Scheele (Fr.); Scheelesgrün (Deut.); verde di Scheele (It.); Swedish green; Schloss Green

Raman (MFA)

Scheele's green (Forbes 9.06.3) resize.jpg

Raman (UCL)

ScheelesUCL.jpg

Risks

Physical and Chemical Properties

Composition CuHAsO3
Refractive Index 1.55 - 1.75

Resources and Citations