§173.300 食品添加剂二氧化�?Chlorine dioxide)

　　�� 173.300 Chlorine dioxide.

　　Chlorine dioxide （CAS Reg. No. 10049�C04�C4� may be safely used in food in accordance with the following prescribed conditions:

　　（a）（1� The additive is generated by one of the following methods:

　　（i� Treating an aqueous solution of sodium chlorite with either chlorine gas or a mixture of sodium hypochlorite and hydrochloric acid.

　　（ii� Treating an aqueous solution of sodium chlorate with hydrogen peroxide in the presence of sulfuric acid.

　　（iii� Treating an aqueous solution of sodium chlorite by electrolysis.

　　�?� The generator effluent contains at least 90 percent （by weight� of chlorine dioxide with respect to all chlorine species as determined by Method 4500�CClO2E in the ��Standard Methods for the Examination of Water and Wastewater,�� 20th ed., 1998, or an equivalent method. Method 4500�CClO2E �?ldquo;Amperometric Method II��� is incorporated by reference in accordance with 5 U.S.C. 552（a� and 1 CFR part 51. You may obtain a copy from the Center for Food Safety and Applied Nutrition （HFS�C200�? Food and Drug Administration, 5100 Paint Branch Pkwy., College Park, MD 20740, or the American Public Health Association, 800 I St. NW., Washington, DC 20001�C3750. You may inspect a copy at the Center for Food Safety and Applied Nutrition's Library, 5100 Paint Branch Pkwy., College Park, MD, or at the National Archives and Records Administration （NARA�? For information on the availability of this material at NARA, call 202�C741�C6030, or go to:http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.

　　（b）（1� The additive may be used as an antimicrobial agent in water used in poultry processing in an amount not to exceed 3 parts per million （ppm� residual chlorine dioxide as determined by Method 4500�CClO2E, referenced in paragraph （a）（2� of this section, or an equivalent method.

　　�?� The additive may be used as an antimicrobial agent in water used to wash fruits and vegetables that are not raw agricultural commodities in an amount not to exceed 3 ppm residual chlorine dioxide as determined by Method 4500�CClO2E, referenced in paragraph （a）（2� of this section, or an equivalent method. Treatment of the fruits and vegetables with chlorine dioxide shall be followed by a potable water rinse or by blanching, cooking, or canning.

　　[60 FR 11900, Mar. 3, 1995. Redesignated at 61 FR 14245, Apr. 1, 1996, as amended at 61 FR 14480, Apr. 2, 1996; 63 FR 38747, July 20, 1998; 65 FR 34587, May 31, 2000; 70 FR 7396, Feb. 14, 2005]

　　更多关于美国 FDA 可直接加入食品中的辅助性食品添加剂的种类法规，请点出�a href="//www.sqrdapp.com/law/dongtai/171830.html">美国FDA 21 CFR �?73部分可直接加入食品中的辅助性食品添加剂种类汇怺�/a>