Copperas

Description

Common name for iron sulfate used prior to the 1800s when chemical compound names were standardized (Schur 1985). It was also called green copperas to differentiate from blue copperas (See Copper sulfate) and white copperas (Zinc sulfate).

See Ferrous sulfate.

Physical and Chemical Properties

Soluble in water.

Resources and Citations

• Susan E. Schur, Conservation Terminology: A review of Past & Current Nomenclature of Materials, Technology and Conservation, Spring (p.34-39); Summer (p.35-38); Fall (p.25-36), 1985

• G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 322

• Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)

• Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993