CYHEXATIN   JMPR 1975

    Explanation

         In the 1973 JMPR (FAO/WHO, 1974) practical residue limits for
    cyhexatin (under the name of tricyclohexyltin hydroxide) of 0.2 mg/kg
    in meat and 0.05 mg/kg in milk and milk products (fat basis) were
    established in addition to tolerances in citrus and manufactured tea,
    both at 2 mg/kg. At the 1975 Meeting of the Codex Committee on
    Pesticide Residues, questions were put to the Joint Meeting for
    clarification as to why the above mentioned limit for meat was
    established for the whole product, whereas for milk and milk products
    it was on a fat basis (Alinorm 76/24, para. 174).

    APPRAISAL

         In response to the question raised by the CCPR, the Meeting has
    reviewed the previously supplied data on cyhexatin in meat and milk
    and milk products. It is confirmed that the different methods of
    expressing residue limits in the two commodities reflects the actual
    situation which occurs and which was reported by previous Meetings.
    From the monographs of the FAO/WHO, 1971, it can be seen that while a
    quantitative partitioning of cyhexatin into milk fat is evident and
    thus justifies a limit on that basis, this is not the case for meat
    products. Rat studies as well as cattle feeding demonstrates that
    residues in body fat generally are lower than in meat, liver and
    kidneys.

         On this basis, therefore, it is the opinion of the Meeting that
    the present proposals should be maintained.
    

    See Also:
       Toxicological Abbreviations
       Cyhexatin (WHO Pesticide Residues Series 4)
       Cyhexatin (Pesticide residues in food: 1978 evaluations)
       Cyhexatin (Pesticide residues in food: 1980 evaluations)
       Cyhexatin (Pesticide residues in food: 1981 evaluations)
       Cyhexatin (Pesticide residues in food: 1983 evaluations)
       Cyhexatin (Pesticide residues in food: 1989 evaluations Part II Toxicology)
       Cyhexatin (Pesticide residues in food: 1991 evaluations Part II Toxicology)
       Cyhexatin (JMPR Evaluations 2005 Part II Toxicological)