National Occupational Exposure Survey
(1981 - 1983)

Estimated Numbers of Employees Potentially Exposed to Specific Agents by Occupation*

Agent Name 1,3-ISOBENZOFURANDIONE, 3A,4,7,7A-TETRAHYDRO-
CAS # 85-43-8
RTECS #
Agent Code X2931

Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
216 ENGINEERING TECHNICIANS, N.E.C. 61  
453 JANITORS AND CLEANERS 336  
519 MACHINERY MAINTENANCE OCCUPATIONS 31 31
636 PRECISION ASSEMBLERS, METAL 119 119
727 SAWING MACHINE OPERATORS 31  
756 MIXING AND BLENDING MACHINE OPERATORS 6  
759 PAINTING AND PAINT SPRAYING MACHINE OPERATORS 61 61
777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 916 336
785 ASSEMBLERS 24  
TOTAL 1,584 547

*(1) The estimates for each occupation apply across the surveyed industries in which the agent was observed. Not all industries were surveyed, and not all agents were observed in all surveyed industries. (2) When using the estimates, standard errors associated with estimates should be considered. (3) Potential exposures to a chemical agent are categorized as actual (i.e., the surveyor observed the use of the specific agent) or tradename (i.e., the surveyor observed the use of a tradename product known to contain the specific agent). The estimates presented in the table combine both categories.

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