National Occupational Exposure Survey
(1981 - 1983)

Estimated Percentages of Controlled and Uncontrolled Potential Exposures to Specific Agents by Occupation within 2-Digit Standard Industrial Classification (SIC)*

Agent Name IMIDAZOLE, 2-ETHYL-4-METHYL-
CAS # 931-36-2
RTECS #  
Agent Code X3160

CHEMICALS AND ALLIED PRODUCTS (SIC 28)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
518 INDUSTRIAL MACHINERY REPAIRERS 100.0%
0.0%
0.0%
0.0%
0.0%
10
585 PLUMBERS, PIPEFITTERS, AND STEAMFITTERS 100.0%
0.0%
0.0%
0.0%
0.0%
341
637 MACHINISTS 100.0%
0.0%
0.0%
0.0%
0.0%
138
783 WELDERS AND CUTTERS 100.0%
0.0%
0.0%
0.0%
0.0%
222
SUBTOTAL 100.0%
0.0%
0.0%
0.0%
0.0%
711
MACHINERY, EXCEPT ELECTRICAL (SIC 35)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
633 SUPERVISORS, PRODUCTION OCCUPATIONS 100.0%
0.0%
0.0%
0.0%
0.0%
300
637 MACHINISTS 100.0%
0.0%
0.0%
0.0%
0.0%
2,097
SUBTOTAL 100.0%
0.0%
0.0%
0.0%
0.0%
2,397
ELECTRIC AND ELECTRONIC EQUIPMENT (SIC 36)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
216 ENGINEERING TECHNICIANS, N.E.C. 100.0%
0.0%
0.0%
0.0%
0.0%
764
777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 0.0%
0.0%
0.0%
100.0%
0.0%
26
785 ASSEMBLERS 100.0%
0.0%
0.0%
0.0%
0.0%
3,354
SUBTOTAL 99.3%
0.0%
0.0%
0.6%
0.0%
4,144
TRANSPORTATION EQUIPMENT (SIC 37)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
216 ENGINEERING TECHNICIANS, N.E.C. 100.0%
0.0%
0.0%
0.0%
0.0%
371
515 AIRCRAFT MECHANICS, EXC. ENGINE 100.0%
0.0%
0.0%
0.0%
0.0%
567
785 ASSEMBLERS 54.9%
0.0%
45.1%
0.0%
0.0%
1,966
SUBTOTAL 69.4%
0.0%
30.5%
0.0%
0.0%
2,904
INSTRUMENTS AND RELATED PRODUCTS (SIC 38)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
213 ELECTRICAL AND ELECTRONIC TECHNICIANS 100.0%
0.0%
0.0%
0.0%
0.0%
824
SUBTOTAL 100.0%
0.0%
0.0%
0.0%
0.0%
824
TRANSPORTATION BY AIR (SIC 45)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
515 AIRCRAFT MECHANICS, EXC. ENGINE 100.0%
0.0%
0.0%
0.0%
0.0%
57
547 SPECIFIED MECHANICS AND REPAIRERS, N.E.C. 0.0%
0.0%
0.0%
100.0%
0.0%
43
653 SHEET METAL WORKERS 100.0%
0.0%
0.0%
0.0%
0.0%
1,613
SUBTOTAL 97.4%
0.0%
0.0%
2.5%
0.0%
1,713
TOTAL 92.4%
0.0%
6.9%
0.5%
0.0%
12,693
RELATED PAGES: Estimates by SIC, Estimates by Occupation, Estimates by Occupation within SIC
ABBREVIATIONS:
Resp Prot = Respiratory Protection
Other PPE = Personal Protective Equipment Other Than Respiratory Protection
Vent = Ventilation

*(1) The estimates for each occupation apply only to the 3- and 4-digit SICs surveyed within the 2-digit SIC where the agent was observed. Not all SICs were surveyed, and not all agents were observed in all surveyed SICs. (2) When using the estimated numbers of exposures, 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. (4) For a given occupation, the estimated number of potential exposures is not necessarily equal to the estimated total number of potentially exposed workers. For example, a worker may be exposed to the same agent from multiple sources; thus, it is not the worker that is controlled but the exposure. (5) The presence or absence of controls does not imply that controls are necessary or required. The estimates and the controls are strictly based on observations associated with potential exposures.

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