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 MALEIC ANHYDRIDE, COMPD. WITH STYRENE
CAS # 30766-37-1
RTECS #  
Agent Code X8559

GENERAL BUILDING CONTRACTORS (SIC 15)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
869 CONSTRUCTION LABORERS 100.0%
0.0%
0.0%
0.0%
0.0%
2,033
SUBTOTAL 100.0%
0.0%
0.0%
0.0%
0.0%
2,033
PRINTING AND PUBLISHING (SIC 27)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
453 JANITORS AND CLEANERS 100.0%
0.0%
0.0%
0.0%
0.0%
459
SUBTOTAL 100.0%
0.0%
0.0%
0.0%
0.0%
459
CHEMICALS AND ALLIED PRODUCTS (SIC 28)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
019 MANAGERS AND ADMINISTRATORS, N.E.C. 0.0%
0.0%
0.0%
100.0%
0.0%
87
225 SCIENCE TECHNICIANS, N.E.C. 100.0%
0.0%
0.0%
0.0%
0.0%
158
453 JANITORS AND CLEANERS 100.0%
0.0%
0.0%
0.0%
0.0%
221
756 MIXING AND BLENDING MACHINE OPERATORS 19.5%
0.0%
80.5%
0.0%
0.0%
324
SUBTOTAL 55.9%
0.0%
33.0%
11.0%
0.0%
790
FABRICATED METAL PRODUCTS (SIC 34)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
356 MAIL CLERKS, EXC. POSTAL SERVICE 100.0%
0.0%
0.0%
0.0%
0.0%
19
SUBTOTAL 100.0%
0.0%
0.0%
0.0%
0.0%
19
ELECTRIC AND ELECTRONIC EQUIPMENT (SIC 36)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
453 JANITORS AND CLEANERS 100.0%
0.0%
0.0%
0.0%
0.0%
322
469 PERSONAL SERVICE OCCUPATIONS, N.E.C. 100.0%
0.0%
0.0%
0.0%
0.0%
238
SUBTOTAL 100.0%
0.0%
0.0%
0.0%
0.0%
560
TRANSPORTATION EQUIPMENT (SIC 37)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
453 JANITORS AND CLEANERS 0.0%
0.0%
100.0%
0.0%
0.0%
311
SUBTOTAL 0.0%
0.0%
100.0%
0.0%
0.0%
311
ELECTRIC, GAS, AND SANITARY SERVICES (SIC 49)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
453 JANITORS AND CLEANERS 100.0%
0.0%
0.0%
0.0%
0.0%
377
SUBTOTAL 100.0%
0.0%
0.0%
0.0%
0.0%
377
BUSINESS SERVICES (SIC 73)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
453 JANITORS AND CLEANERS 100.0%
0.0%
0.0%
0.0%
0.0%
4,769
SUBTOTAL 100.0%
0.0%
0.0%
0.0%
0.0%
4,769
HEALTH SERVICES (SIC 80)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
449 MAIDS AND HOUSEMEN 100.0%
0.0%
0.0%
0.0%
0.0%
590
453 JANITORS AND CLEANERS 100.0%
0.0%
0.0%
0.0%
0.0%
1,692
SUBTOTAL 100.0%
0.0%
0.0%
0.0%
0.0%
2,282
TOTAL 94.3%
0.0%
4.9%
0.7%
0.0%
11,600
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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