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更多关于已证实属于一般公认为安全（GRAS）的可直接加入食品中的物质种类，请点出a href="//www.sqrdapp.com/law/dongtai/172262.html">美国FDA 21 CFR ?84部分已证实属于一般公认为安全（GRAS）的可直接加入食品中的物质种类汇怺/font>
184.1537 Nickel.
（a Elemental nickel （CAS Reg. No. 7440C02C0 is obtained from nickel ore by transforming it to nickel sulfide （Ni3S2? The sulfide is roasted in air to give nickel oxide （NiO? The oxide is then reduced with carbon to give elemental nickel.
（b The ingredient must be of a purity suitable for its intended use.
（c In accordance with184.1（b）（1? the ingredient is used in food with no limitation other thancurrent good manufacturing practice. The affirmation of this ingredient as generally recognized as safe （GRAS as a direct human food ingredient is based upon the following current good manufacturing practice conditions of use:
? The ingredient is used as a catalyst as defined in170.3（o）（24 of this chapter.
? The ingredient is used in the hydrogenation of fats and oils as defined in 170.3（n）（12 of this chapter at levels not to exceed current good manufacturing practice. Current good manufacturing practice includes the removal of nickel from fats and oils following hydrogenation.
（d Prior sanctions for this ingredient different from the uses established in this section do not exist or have been waived.
[48 FR 51618, Nov. 10, 1983, as amended at 73 FR 8607, Feb. 14, 2008]
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