National Occupational Exposure Survey
(1981 - 1983)

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

Agent Name BUTANEDIOIC ACID, 2,3-DIHYDROXY-, (R*,R*)-(+/-)-
CAS # 133-37-9
RTECS #
Agent Code X9859

Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
073 CHEMISTS, EXCEPT BIOCHEMISTS 295 228
083 MEDICAL SCIENTISTS 128 118
084 PHYSICIANS 10  
095 REGISTERED NURSES 600 600
188 PAINTERS, SCULPTORS, CRAFT-ARTISTS, AND ARTIST PRINTMAKERS 108 72
203 CLINICAL LABORATORY TECHNOLOGISTS AND TECHNICIANS 2,312 1,937
206 RADIOLOGIC TECHNICIANS 70 60
216 ENGINEERING TECHNICIANS, N.E.C. 688 640
365 STOCK AND INVENTORY CLERKS 431 359
446 HEALTH AIDES, EXCEPT NURSING 732 407
TOTAL 5,373 4,421

*(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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