[Code of Federal Regulations] [Title 40, Volume 23] [Revised as of July 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR180.1237] [Page 625] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 180_TOLERANCES AND EXEMPTIONS FROM TOLERANCES FOR PESTICIDE CHEMICALS IN Subpart D_Exemptions From Tolerances Sec. 180.1237 Sodium metasilicate; exemption from the requirement of a tolerance. (a) An exemption from the requirement of a tolerance is established for residues of sodium metasilicate in or on all food commodities when used in accordance with approved label rates and good agricultural practices as a plant desiccant, so long as the sodium metasilicate does not exceed 4% by weight in aqueous solution. (b) An exemption from the requirement of a tolerance is established for residues of sodium metasilicate in or on all food commodities when used in accordance with approved label rates and good agricultural practices as an insecticide and fungicide, so long as the sodium metasilicate does not exceed 2.41% by weight in aqueous solution. [71 FR 19441, Apr. 14, 2006]