Toxicological considerations oral exposure

There is considerably less information available on the toxicology of HDl after oral exposure compared to the data available on the inhalation toxicology of HDl discussed in the previous section of this profile. Clearly, inhalation is the major route of occupational exposure to HDl however, given exposure routes such as the lung mucocilliary clearance pathways, a very small amoimt of HDl could eventually enter the gastrointestinal tract and be presented for absorption, with possible systemic effects. Most of the information available on the oral absorption of HDl is about relatively large doses of HDl administered to laboratory animals, with no information located on the health effects of HDl in humans after oral exposure. 

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