National Occupational Exposure Survey
(1981 - 1983)

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

Agent Name 12H-PHTHALOPERIN-12-ONE, 8,9,10,11-TETRACHLORO-
CAS # 20749-68-2
RTECS #
Agent Code X1892

Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
335 FILE CLERKS 253  
719 MOLDING AND CASTING MACHINE OPERATORS 923 770
756 MIXING AND BLENDING MACHINE OPERATORS 253  
TOTAL 1,429 770

*(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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