The German Commission for the Investigation of Health Hazards of Chemical Compounds in the Work Area has re-evaluated cresol (all isomers) [1319-77-3] and evaluated a maximum workplace concentration (MAK value) of 1 ml cresol/m3. Only one study has been published in which the relationship between external exposure to cresol and cresol excretion in urine was investigated. However, the time-weighted average of external exposure in this study was far below the current MAK value. Data on the

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... nship between internal exposure and effects are not available. As appropriate data for deriving the critical internal dose for cresol are lacking, a biological tolerance value (BAT value) for this compound cannot be established and the biological guidance value (BLW) was withdrawn.