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[W.A.Hammond Drierite Co.] A registered trademark for a product composed of granular anhydrous calcium sulfate. Drierite® is an effective absorbent for both liquid and vapor-phase water. Drierite® may be regenerated numerous times by oven drying. One commercial form, Drierite® F-6, contains cobaltous chloride as a moisture indicator where the anhydrous form is blue and the hydrated form is pink.


Physical and Chemical Properties

  • CAS: 7778-18-9,1317-65-3
  • Molecular Formula: CaO4S
  • Molecular Weight (g/mol): 136.134
  • Drierite: regeneration

Forms and Sizes

  • Granular forms: powder, 200 mesh, 20-40 mesh, 10-20 mesh, 8 mesh, 6 mesh, and 4 mesh granules. ("Mesh" = number of granules per inch.)

Resources and Citations

Drierite: Website

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