Current Catalog

Current Catalog
Author: National Library of Medicine (U.S.)
Publisher:
Total Pages: 690
Release: 1992
Genre: Medicine
ISBN:

First multi-year cumulation covers six years: 1965-70.

Health-based Recommended Occupational Exposure Limit for Methyl Ethyl Ketone

Health-based Recommended Occupational Exposure Limit for Methyl Ethyl Ketone
Author: Netherlands. Werkgroep van Deskundigen ter Vaststelling van MAC-Waarden
Publisher:
Total Pages: 60
Release: 1991
Genre: Methyl ethyl ketone
ISBN:

The NAEL of 7500 mg MEK/m3 (rat, 90 days) will be taken as a starting point. In view of the absence of long-term data and carcinogenicity data a safety factor of 10 is taken. Therefore, a OEL of 7500 : 10 mg/m3 = 750 mg MEK/m3 TWA 8 hr (250 ppm) is advised for exposure to MEK alone. Since skin absorption can add to the inhalatory exposure a "H" indication is advised. This value is above the odour threshold of detection; Biological monitoring it is advised to use as a BEI 2.7 mg MEK/l urine at the end of the workshift.