Food Regulations 1985

It shall comply with the standard for table salt prescribed in regulation 284 and shall contain not less than 25 mg/kg and not more than 40 mg/kg of iodide calculated as potassium iodide. (2) Iodised table salt or iodised salt may contain sodium thiosulphate (Na2S2O3) and sodium carbonate (Na2CO3), each in a proportion not exceeding 1,000 mg/kg ... ................
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