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Hazard Predictions

• Generates heat: Exothermic reaction at ambient temperatures (releases heat)

Contact with anhydrous liquid HF causes CaO to incandesce (Mellor, J.W. 1956. Mellor's Comprehensive Treatise on Inorganic and Theoretical Chemistry. Vol. 2, Supp. 1, p. 122. Longmans, Green and Co Ltd.; Mellor, J.W. 1939. Mellor's Comprehensive Treatise on Inorganic and Theoretical Chemistry. Vol. 9, p. 101. Longmans, Green and Co Ltd.).

Liquid HF reacts incandescently with metal oxides, including arsenic trioxide and calcium oxide (Lewis, R.J., Sr. 2000. Sax's Dangerous Properties of Industrial Materials, 10th Edition. New York: John Wiley & Sons, pp. 1993).