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 PHTHALIC ANHYDRIDE
CAS # 85-44-9
RTECS # TI3150000 
Agent Code 59230

SPECIAL TRADE CONTRACTORS (SIC 17)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
783 WELDERS AND CUTTERS 0.0%
0.0%
100.0%
0.0%
0.0%
107
SUBTOTAL 0.0%
0.0%
100.0%
0.0%
0.0%
107
TEXTILE MILL PRODUCTS (SIC 22)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
749 MISCELLANEOUS TEXTILE MACHINE OPERATORS 100.0%
0.0%
0.0%
0.0%
0.0%
59
SUBTOTAL 100.0%
0.0%
0.0%
0.0%
0.0%
59
LUMBER AND WOOD PRODUCTS (SIC 24)
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%
357
363 PRODUCTION COORDINATORS 100.0%
0.0%
0.0%
0.0%
0.0%
532
657 CABINET MAKERS AND BENCH CARPENTERS 100.0%
0.0%
0.0%
0.0%
0.0%
2,127
658 FURNITURE AND WOOD FINISHERS 100.0%
0.0%
0.0%
0.0%
0.0%
1,595
SUBTOTAL 100.0%
0.0%
0.0%
0.0%
0.0%
4,611
FURNITURE AND FIXTURES (SIC 25)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
733 MISCELLANEOUS WOODWORKING MACHINE OPERATORS 100.0%
0.0%
0.0%
0.0%
0.0%
1,391
759 PAINTING AND PAINT SPRAYING MACHINE OPERATORS 66.7%
0.0%
0.0%
33.3%
0.0%
696
SUBTOTAL 88.8%
0.0%
0.0%
11.1%
0.0%
2,087
PAPER AND ALLIED PRODUCTS (SIC 26)
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%
412
787 HAND MOLDING, CASTING, AND FORMING OCCUPATIONS 100.0%
0.0%
0.0%
0.0%
0.0%
687
SUBTOTAL 100.0%
0.0%
0.0%
0.0%
0.0%
1,099
PRINTING AND PUBLISHING (SIC 27)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
364 TRAFFIC, SHIPPING, AND RECEIVING CLERKS 100.0%
0.0%
0.0%
0.0%
0.0%
122
453 JANITORS AND CLEANERS 100.0%
0.0%
0.0%
0.0%
0.0%
57
679 BOOKBINDERS 100.0%
0.0%
0.0%
0.0%
0.0%
462
734 PRINTING MACHINE OPERATORS 98.5%
0.0%
1.5%
0.0%
0.0%
15,318
737 MISCELLANEOUS PRINTING MACHINE OPERATORS 100.0%
0.0%
0.0%
0.0%
0.0%
479
777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 100.0%
0.0%
0.0%
0.0%
0.0%
462
SUBTOTAL 98.6%
0.0%
1.3%
0.0%
0.0%
16,900
CHEMICALS AND ALLIED PRODUCTS (SIC 28)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
073 CHEMISTS, EXCEPT BIOCHEMISTS 0.0%
0.0%
0.0%
100.0%
0.0%
53
216 ENGINEERING TECHNICIANS, N.E.C. 100.0%
0.0%
0.0%
0.0%
0.0%
190
224 CHEMICAL TECHNICIANS 43.2%
0.0%
14.7%
42.1%
0.0%
8,309
225 SCIENCE TECHNICIANS, N.E.C. 0.0%
0.0%
0.0%
100.0%
0.0%
917
235 TECHNICIANS, N.E.C. 100.0%
0.0%
0.0%
0.0%
0.0%
512
365 STOCK AND INVENTORY CLERKS 0.0%
0.0%
50.0%
50.0%
0.0%
132
453 JANITORS AND CLEANERS 9.6%
0.0%
48.5%
42.0%
0.0%
5,214
544 MILLWRIGHTS 100.0%
0.0%
0.0%
0.0%
0.0%
766
575 ELECTRICIANS 0.0%
0.0%
100.0%
0.0%
0.0%
79
633 SUPERVISORS, PRODUCTION OCCUPATIONS 50.0%
0.0%
0.0%
50.0%
0.0%
45
754 PACKAGING AND FILLING MACHINE OPERATORS 0.0%
0.0%
0.0%
100.0%
0.0%
269
756 MIXING AND BLENDING MACHINE OPERATORS 62.0%
0.0%
0.0%
38.0%
0.0%
3,640
757 SEPARATING, FILTERING, AND CLARIFYING MACHINE OPERATORS 69.7%
0.0%
15.2%
15.2%
0.0%
873
777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 16.0%
0.0%
2.5%
47.0%
34.5%
3,212
779 MACHINE OPERATORS, NOT SPECIFIED 73.1%
0.0%
6.7%
6.7%
13.4%
1,871
859 MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS 0.0%
0.0%
40.2%
59.8%
0.0%
897
888 HAND PACKERS AND PACKAGERS 0.0%
0.0%
0.0%
100.0%
0.0%
3,577
889 LABORERS, EXCEPT CONSTRUCTION 74.3%
0.0%
25.7%
0.0%
0.0%
222
SUBTOTAL 34.0%
0.0%
15.1%
46.3%
4.4%
30,778
PETROLEUM AND COAL PRODUCTS (SIC 29)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
224 CHEMICAL TECHNICIANS 100.0%
0.0%
0.0%
0.0%
0.0%
517
SUBTOTAL 100.0%
0.0%
0.0%
0.0%
0.0%
517
RUBBER AND MISC. PLASTICS PRODUCTS (SIC 30)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
224 CHEMICAL TECHNICIANS 0.0%
0.0%
100.0%
0.0%
0.0%
44
453 JANITORS AND CLEANERS 100.0%
0.0%
0.0%
0.0%
0.0%
633
719 MOLDING AND CASTING MACHINE OPERATORS 0.0%
0.0%
0.0%
100.0%
0.0%
416
755 EXTRUDING AND FORMING MACHINE OPERATORS 100.0%
0.0%
0.0%
0.0%
0.0%
48
756 MIXING AND BLENDING MACHINE OPERATORS 21.1%
0.0%
25.6%
53.3%
0.0%
780
777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 100.0%
0.0%
0.0%
0.0%
0.0%
4,441
785 ASSEMBLERS 100.0%
0.0%
0.0%
0.0%
0.0%
1,093
SUBTOTAL 85.5%
0.0%
3.2%
11.1%
0.0%
7,455
PRIMARY METAL INDUSTRIES (SIC 33)
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%
11
547 SPECIFIED MECHANICS AND REPAIRERS, N.E.C. 100.0%
0.0%
0.0%
0.0%
0.0%
16
549 NOT SPECIFIED MECHANICS AND REPAIRERS 100.0%
0.0%
0.0%
0.0%
0.0%
1,627
715 MISCELLANEOUS METAL, PLASTIC, STONE, AND GLASS WORKING MACHINE OPERATORS 100.0%
0.0%
0.0%
0.0%
0.0%
29
759 PAINTING AND PAINT SPRAYING MACHINE OPERATORS 0.0%
0.0%
50.0%
50.0%
0.0%
19,576
769 SLICING AND CUTTING MACHINE OPERATORS 100.0%
0.0%
0.0%
0.0%
0.0%
29
777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 100.0%
0.0%
0.0%
0.0%
0.0%
291
SUBTOTAL 9.2%
0.0%
45.3%
45.3%
0.0%
21,579
FABRICATED METAL PRODUCTS (SIC 34)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
059 ENGINEERS, N.E.C. 100.0%
0.0%
0.0%
0.0%
0.0%
284
216 ENGINEERING TECHNICIANS, N.E.C. 0.0%
0.0%
100.0%
0.0%
0.0%
327
364 TRAFFIC, SHIPPING, AND RECEIVING CLERKS 100.0%
0.0%
0.0%
0.0%
0.0%
160
453 JANITORS AND CLEANERS 48.4%
0.0%
0.0%
51.6%
0.0%
413
723 METAL PLATING MACHINE OPERATORS 0.0%
0.0%
50.0%
50.0%
0.0%
160
724 HEAT TREATING EQUIPMENT OPERATORS 0.0%
0.0%
100.0%
0.0%
0.0%
140
759 PAINTING AND PAINT SPRAYING MACHINE OPERATORS 0.0%
0.0%
8.1%
54.2%
37.7%
858
779 MACHINE OPERATORS, NOT SPECIFIED 0.0%
0.0%
100.0%
0.0%
0.0%
150
785 ASSEMBLERS 100.0%
0.0%
0.0%
0.0%
0.0%
284
SUBTOTAL 33.4%
0.0%
27.6%
27.3%
11.6%
2,776
MACHINERY, EXCEPT ELECTRICAL (SIC 35)
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%
33
549 NOT SPECIFIED MECHANICS AND REPAIRERS 100.0%
0.0%
0.0%
0.0%
0.0%
201
575 ELECTRICIANS 100.0%
0.0%
0.0%
0.0%
0.0%
126
579 PAINTERS, CONSTRUCTION AND MAINTENANCE 37.6%
0.0%
37.6%
24.9%
0.0%
196
636 PRECISION ASSEMBLERS, METAL 100.0%
0.0%
0.0%
0.0%
0.0%
1,238
637 MACHINISTS 100.0%
0.0%
0.0%
0.0%
0.0%
201
675 HAND MOLDERS AND SHAPERS, EXCEPT JEWELERS 100.0%
0.0%
0.0%
0.0%
0.0%
966
684 MISCELLANEOUS PRECISION WORKERS, N.E.C. 100.0%
0.0%
0.0%
0.0%
0.0%
60
709 GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS 0.0%
0.0%
0.0%
100.0%
0.0%
16
759 PAINTING AND PAINT SPRAYING MACHINE OPERATORS 0.0%
5.3%
0.0%
94.7%
0.0%
2,530
777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 92.9%
0.0%
3.6%
3.6%
0.0%
909
785 ASSEMBLERS 100.0%
0.0%
0.0%
0.0%
0.0%
2,518
889 LABORERS, EXCEPT CONSTRUCTION 100.0%
0.0%
0.0%
0.0%
0.0%
840
SUBTOTAL 72.2%
1.3%
1.0%
25.3%
0.0%
9,834
ELECTRIC AND ELECTRONIC EQUIPMENT (SIC 36)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
059 ENGINEERS, N.E.C. 100.0%
0.0%
0.0%
0.0%
0.0%
23
213 ELECTRICAL AND ELECTRONIC TECHNICIANS 0.0%
0.0%
100.0%
0.0%
0.0%
5
216 ENGINEERING TECHNICIANS, N.E.C. 0.0%
0.0%
100.0%
0.0%
0.0%
61
453 JANITORS AND CLEANERS 100.0%
0.0%
0.0%
0.0%
0.0%
530
519 MACHINERY MAINTENANCE OCCUPATIONS 100.0%
0.0%
0.0%
0.0%
0.0%
31
683 ELECTRICAL AND ELECTRONIC EQUIPMENT ASSEMBLERS 0.0%
0.0%
100.0%
0.0%
0.0%
42
703 LATHE AND TURNING MACHINE SET-UP OPERATORS 50.0%
0.0%
0.0%
50.0%
0.0%
191
709 GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS 0.0%
0.0%
50.0%
50.0%
0.0%
145
727 SAWING MACHINE OPERATORS 0.0%
0.0%
50.0%
50.0%
0.0%
61
753 CEMENTING AND GLUING MACHINE OPERATORS 0.0%
0.0%
50.0%
50.0%
0.0%
17
756 MIXING AND BLENDING MACHINE OPERATORS 100.0%
0.0%
0.0%
0.0%
0.0%
6
759 PAINTING AND PAINT SPRAYING MACHINE OPERATORS 42.0%
0.0%
15.6%
42.4%
0.0%
391
777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 66.7%
0.0%
33.3%
0.0%
0.0%
916
779 MACHINE OPERATORS, NOT SPECIFIED 100.0%
0.0%
0.0%
0.0%
0.0%
10
785 ASSEMBLERS 24.9%
0.0%
69.5%
0.0%
5.6%
418
789 HAND PAINTING, COATING, AND DECORATING OCCUPATIONS 0.0%
0.0%
100.0%
0.0%
0.0%
5
796 PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS 100.0%
0.0%
0.0%
0.0%
0.0%
48
SUBTOTAL 55.9%
0.0%
30.3%
12.8%
0.8%
2,900
TRANSPORTATION EQUIPMENT (SIC 37)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
214 INDUSTRIAL ENGINEERING TECHNICIANS 100.0%
0.0%
0.0%
0.0%
0.0%
14
216 ENGINEERING TECHNICIANS, N.E.C. 100.0%
0.0%
0.0%
0.0%
0.0%
36
365 STOCK AND INVENTORY CLERKS 0.0%
0.0%
0.0%
100.0%
0.0%
3
453 JANITORS AND CLEANERS 0.0%
50.0%
0.0%
50.0%
0.0%
2,792
549 NOT SPECIFIED MECHANICS AND REPAIRERS 0.0%
50.0%
50.0%
0.0%
0.0%
9,658
567 CARPENTERS 0.0%
0.0%
100.0%
0.0%
0.0%
129
656 PATTERNMAKERS AND MODEL MAKERS, WOOD 0.0%
0.0%
100.0%
0.0%
0.0%
82
658 FURNITURE AND WOOD FINISHERS 100.0%
0.0%
0.0%
0.0%
0.0%
34
703 LATHE AND TURNING MACHINE SET-UP OPERATORS 100.0%
0.0%
0.0%
0.0%
0.0%
259
709 GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS 0.0%
0.0%
100.0%
0.0%
0.0%
210
719 MOLDING AND CASTING MACHINE OPERATORS 0.0%
0.0%
100.0%
0.0%
0.0%
29
759 PAINTING AND PAINT SPRAYING MACHINE OPERATORS 45.9%
0.0%
54.1%
0.0%
0.0%
2,015
779 MACHINE OPERATORS, NOT SPECIFIED 0.0%
0.0%
100.0%
0.0%
0.0%
518
785 ASSEMBLERS 94.1%
0.0%
0.6%
5.3%
0.0%
1,009
793 HAND ENGRAVING AND PRINTING OCCUPATIONS 0.0%
0.0%
50.0%
50.0%
0.0%
45
796 PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS 100.0%
0.0%
0.0%
0.0%
0.0%
88
SUBTOTAL 13.6%
36.7%
40.8%
8.7%
0.0%
16,921
INSTRUMENTS AND RELATED PRODUCTS (SIC 38)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
335 FILE CLERKS 100.0%
0.0%
0.0%
0.0%
0.0%
450
759 PAINTING AND PAINT SPRAYING MACHINE OPERATORS 4.9%
0.0%
50.0%
22.5%
22.5%
1,114
785 ASSEMBLERS 0.0%
0.0%
0.0%
100.0%
0.0%
1,245
SUBTOTAL 17.9%
0.0%
19.8%
53.2%
8.9%
2,809
TRUCKING AND WAREHOUSING (SIC 42)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
719 MOLDING AND CASTING MACHINE OPERATORS 100.0%
0.0%
0.0%
0.0%
0.0%
598
SUBTOTAL 100.0%
0.0%
0.0%
0.0%
0.0%
598
WATER TRANSPORTATION (SIC 44)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
567 CARPENTERS 100.0%
0.0%
0.0%
0.0%
0.0%
1,708
SUBTOTAL 100.0%
0.0%
0.0%
0.0%
0.0%
1,708
TRANSPORTATION BY AIR (SIC 45)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
453 JANITORS AND CLEANERS 0.0%
100.0%
0.0%
0.0%
0.0%
599
508 AIRCRAFT ENGINE MECHANICS 100.0%
0.0%
0.0%
0.0%
0.0%
33,536
SUBTOTAL 98.2%
1.7%
0.0%
0.0%
0.0%
34,135
COMMUNICATION (SIC 48)
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%
34
SUBTOTAL 100.0%
0.0%
0.0%
0.0%
0.0%
34
ELECTRIC, GAS, AND SANITARY SERVICES (SIC 49)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
759 PAINTING AND PAINT SPRAYING MACHINE OPERATORS 0.0%
0.0%
25.0%
75.0%
0.0%
71
SUBTOTAL 0.0%
0.0%
25.0%
75.0%
0.0%
71
WHOLESALE TRADE - DURABLE GOODS (SIC 50)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
514 AUTOMOBILE BODY AND RELATED REPAIRERS 100.0%
0.0%
0.0%
0.0%
0.0%
788
759 PAINTING AND PAINT SPRAYING MACHINE OPERATORS 0.0%
50.0%
0.0%
50.0%
0.0%
1,359
SUBTOTAL 36.7%
31.6%
0.0%
31.6%
0.0%
2,147
AUTOMOTIVE DEALERS & SERVICE STATIONS (SIC 55)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
759 PAINTING AND PAINT SPRAYING MACHINE OPERATORS 100.0%
0.0%
0.0%
0.0%
0.0%
153
SUBTOTAL 100.0%
0.0%
0.0%
0.0%
0.0%
153
BUSINESS SERVICES (SIC 73)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
073 CHEMISTS, EXCEPT BIOCHEMISTS 0.0%
0.0%
58.3%
41.7%
0.0%
845
216 ENGINEERING TECHNICIANS, N.E.C. 0.0%
0.0%
38.0%
62.0%
0.0%
415
SUBTOTAL 0.0%
0.0%
51.6%
48.3%
0.0%
1,260
HEALTH SERVICES (SIC 80)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
084 PHYSICIANS 100.0%
0.0%
0.0%
0.0%
0.0%
99
095 REGISTERED NURSES 100.0%
0.0%
0.0%
0.0%
0.0%
53
099 OCCUPATIONAL THERAPISTS 74.3%
0.0%
25.7%
0.0%
0.0%
389
103 PHYSICAL THERAPISTS 100.0%
0.0%
0.0%
0.0%
0.0%
373
105 THERAPISTS, N.E.C. 100.0%
0.0%
0.0%
0.0%
0.0%
2,217
365 STOCK AND INVENTORY CLERKS 100.0%
0.0%
0.0%
0.0%
0.0%
115
453 JANITORS AND CLEANERS 100.0%
0.0%
0.0%
0.0%
0.0%
188
547 SPECIFIED MECHANICS AND REPAIRERS, N.E.C. 100.0%
0.0%
0.0%
0.0%
0.0%
103
759 PAINTING AND PAINT SPRAYING MACHINE OPERATORS 100.0%
0.0%
0.0%
0.0%
0.0%
44
SUBTOTAL 97.2%
0.0%
2.7%
0.0%
0.0%
3,581
TOTAL 58.7%
4.6%
15.2%
20.1%
1.1%
164,119
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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