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Article
Gypsum: an old product with a new use
Integrated Crop Management News
  • John E. Sawyer, Iowa State University
Document Type
Article
Publication Date
4-21-2003
Abstract

Gypsum is calcium sulfate (CaSO4). Refined gypsum in the anhydrite form (no water) is 29.4 percent calcium (Ca) and 23.5 percent sulfur (S). Usually, gypsum has water associated in the molecular structure (CaSO4·2H2O) and is approximately 23.3 percent Ca and 18.5 percent S (plaster of paris). Gypsum fertilizer usually has other impurities so grades are approximately 22 percent Ca and 17 percent S.

Copyright Owner
Iowa State University
Language
en
File Format
application/pdf
Citation Information
John E. Sawyer. "Gypsum: an old product with a new use" (2003)
Available at: http://works.bepress.com/john-sawyer/93/