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§ 184.1210 Calcium oxide.
（a） Calcium oxide （CaO, CAS Reg. No. 1305–78–8） is also known as lime, quick lime, burnt lime, or calx. It is produced from calcium carbonate, limestone, or oyster shells by calcination at temperatures of 1,700–2,450°F.
（b） The ingredient meets the specifications of the Food Chemicals Codex, 3d Ed. （1981）, p. 55, which is incorporated by reference. Copies are available from the National Academy Press, 2101 Constitution Ave. NW., Washington, DC 20418, or available for inspection at the National Archives and Records Administration （NARA）. For information on the availability of this material at NARA, call 202–741–6030, or go to:http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.
（c） In accordance with§184.1（b）（1）, the ingredient is used in food with no limitation other thancurrent good manufacturing practice.
（d） Prior sanctions for this ingredient different from the uses established in this section do not exist or have been waived.
[49 FR 26714, June 29, 1984]
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