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 2,4(1H,3H)-PYRIMIDINEDITHIONE
CAS # 2001-93-6
RTECS #  
Agent Code X1634

MACHINERY, EXCEPT ELECTRICAL (SIC 35)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
774 PHOTOGRAPHIC PROCESS MACHINE OPERATORS 100.0%
0.0%
0.0%
0.0%
0.0%
17
SUBTOTAL 100.0%
0.0%
0.0%
0.0%
0.0%
17
ELECTRIC AND ELECTRONIC EQUIPMENT (SIC 36)
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%
44
SUBTOTAL 100.0%
0.0%
0.0%
0.0%
0.0%
44
TRANSPORTATION EQUIPMENT (SIC 37)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
056 INDUSTRIAL ENGINEERS 100.0%
0.0%
0.0%
0.0%
0.0%
14
SUBTOTAL 100.0%
0.0%
0.0%
0.0%
0.0%
14
BUSINESS SERVICES (SIC 73)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
073 CHEMISTS, EXCEPT BIOCHEMISTS 100.0%
0.0%
0.0%
0.0%
0.0%
233
SUBTOTAL 100.0%
0.0%
0.0%
0.0%
0.0%
233
HEALTH SERVICES (SIC 80)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
203 CLINICAL LABORATORY TECHNOLOGISTS AND TECHNICIANS 100.0%
0.0%
0.0%
0.0%
0.0%
108
206 RADIOLOGIC TECHNICIANS 100.0%
0.0%
0.0%
0.0%
0.0%
264
208 HEALTH TECHNOLOGISTS AND TECHNICIANS, N.E.C. 100.0%
0.0%
0.0%
0.0%
0.0%
63
SUBTOTAL 100.0%
0.0%
0.0%
0.0%
0.0%
435
TOTAL 100.0%
0.0%
0.0%
0.0%
0.0%
743
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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