Examination of the aluminum foil pouch used in some pre-measured amalgam capsules for mercury packaging revealed the formation of an unknown substance after trituration. This substance was determined to be aluminum oxide and, in the amorphous or poorly crystallized hydrated form, may be a contaminate of the amalgam alloy.
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References
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Cullity, B.D. : Elements of X-ray Diffraction, 2nd ed., Addison Wesley Publishing Co., 1978, pp. 161-185.
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Encyclopedia of Chemical Technology, 2nd ed., Interscience Publishers, 1963 , pp. 42-51.
