interim marketing authorization regarding the use of potassium ferrocyanide trihydrate as an anticaking agent in salt and as an adjuvant in the production of dendritic salt crystals health canada has received a submission to permit the use of potassium ferrocyanide trihydrate as an anticaking agent in salt at a total amount not to exceed 13 ppm if used singly or in combination with sodium ferrocyanide decahydrate calculated as anhydrous sodium ferrocyanide. the submission also included a request to permit the use of potassium ferrocyanide trihydrate as an adjuvant in the production of dendritic salt crystals at a total amount not to exceed 13 ppm if used singly or in combination with sodium ferrocyanide decahydrate calculated as anhydrous sodium ferrocyanide. evaluation of available data supports the safety and effectiveness of potassium ferrocyanide trihydrate in these food products. therefore it is the intention of health canada to recommend that the regulations be amended to permit the use of potassium ferrocyanide trihydrate as an anticaking agent in salt at a total amount not to exceed 13 ppm used singly or in combination with sodium ferrocyanide decahydrate calculated as anhydrous sodium ferrocyanide. it is also the intention of health canada to recommend that the regulations be amended to permit the use of potassium ferrocyanide trihydrate as an adjuvant in the production of dendritic salt crystals at a total amount not to exceed 13 ppm used singly or in combination with sodium ferrocyanide decahydrate calculated as anhydrous sodium ferrocyanide. as a means to improve the responsiveness of the regulatory system an interim marketing authorization ima is being issued to permit the immediate use of potassium ferrocyanide trihydrate as indicated above while the regulatory process is undertaken to amend the regulations. the proposed regulatory amendments would be enabling measures to allow the sale of additional foods containing potassium ferrocyanide trihydrate as an anticaking agent in salt and as an adjuvant in the production of dendritic salt crystals. the amendments are supported by the safety assessment and would have a low impact on the economy and on the environment. consequently the regulatory amendments may proceed directly to final approval and publication in the canada gazette part ii