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 MORPHOLINE, 4-(2-NITROBUTYL)-
CAS # 2224-44-4
RTECS #  
Agent Code M3297

FURNITURE AND FIXTURES (SIC 25)
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%
837
637 MACHINISTS 100.0%
0.0%
0.0%
0.0%
0.0%
444
SUBTOTAL 100.0%
0.0%
0.0%
0.0%
0.0%
1,281
PRIMARY METAL INDUSTRIES (SIC 33)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
549 NOT SPECIFIED MECHANICS AND REPAIRERS 100.0%
0.0%
0.0%
0.0%
0.0%
352
705 MILLING AND PLANING MACHINE OPERATORS 0.0%
0.0%
0.0%
100.0%
0.0%
480
SUBTOTAL 42.3%
0.0%
0.0%
57.6%
0.0%
832
FABRICATED METAL PRODUCTS (SIC 34)
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%
220
633 SUPERVISORS, PRODUCTION OCCUPATIONS 0.0%
0.0%
100.0%
0.0%
0.0%
271
634 TOOL AND DIE MAKERS 75.2%
0.0%
0.0%
0.0%
24.8%
2,453
637 MACHINISTS 14.3%
0.0%
85.7%
0.0%
0.0%
2,532
706 PUNCHING AND STAMPING PRESS MACHINE OPERATORS 57.6%
0.0%
9.5%
0.0%
33.0%
4,482
707 ROLLING MACHINE OPERATORS 0.0%
0.0%
0.0%
100.0%
0.0%
433
708 DRILLING AND BORING MACHINE OPERATORS 50.0%
0.0%
50.0%
0.0%
0.0%
643
725 MISCELLANEOUS METAL AND PLASTIC PROCESSING MACHINE OPERATORS 50.0%
0.0%
0.0%
0.0%
50.0%
174
769 SLICING AND CUTTING MACHINE OPERATORS 100.0%
0.0%
0.0%
0.0%
0.0%
551
777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 4.5%
0.0%
91.1%
0.0%
4.5%
1,946
779 MACHINE OPERATORS, NOT SPECIFIED 100.0%
0.0%
0.0%
0.0%
0.0%
2,502
783 WELDERS AND CUTTERS 26.8%
0.0%
73.2%
0.0%
0.0%
1,371
785 ASSEMBLERS 100.0%
0.0%
0.0%
0.0%
0.0%
326
SUBTOTAL 51.6%
0.0%
33.3%
2.4%
12.6%
17,904
MACHINERY, EXCEPT ELECTRICAL (SIC 35)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
057 MECHANICAL ENGINEERS 100.0%
0.0%
0.0%
0.0%
0.0%
1,031
637 MACHINISTS 0.0%
0.0%
100.0%
0.0%
0.0%
1,135
684 MISCELLANEOUS PRECISION WORKERS, N.E.C. 0.0%
0.0%
100.0%
0.0%
0.0%
569
704 LATHE AND TURNING MACHINE OPERATORS 0.0%
0.0%
100.0%
0.0%
0.0%
563
779 MACHINE OPERATORS, NOT SPECIFIED 100.0%
0.0%
0.0%
0.0%
0.0%
2,726
SUBTOTAL 62.3%
0.0%
37.6%
0.0%
0.0%
6,024
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%
104
637 MACHINISTS 100.0%
0.0%
0.0%
0.0%
0.0%
643
706 PUNCHING AND STAMPING PRESS MACHINE OPERATORS 100.0%
0.0%
0.0%
0.0%
0.0%
1,236
734 PRINTING MACHINE OPERATORS 0.0%
0.0%
100.0%
0.0%
0.0%
223
777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 100.0%
0.0%
0.0%
0.0%
0.0%
69
785 ASSEMBLERS 100.0%
0.0%
0.0%
0.0%
0.0%
35
SUBTOTAL 90.3%
0.0%
9.6%
0.0%
0.0%
2,310
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%
0.0%
100.0%
0.0%
53
637 MACHINISTS 0.0%
0.0%
0.0%
100.0%
0.0%
132
706 PUNCHING AND STAMPING PRESS MACHINE OPERATORS 100.0%
0.0%
0.0%
0.0%
0.0%
741
708 DRILLING AND BORING MACHINE OPERATORS 100.0%
0.0%
0.0%
0.0%
0.0%
28
719 MOLDING AND CASTING MACHINE OPERATORS 100.0%
0.0%
0.0%
0.0%
0.0%
79
758 COMPRESSING AND COMPACTING MACHINE OPERATORS 0.0%
0.0%
0.0%
100.0%
0.0%
501
777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 0.0%
0.0%
100.0%
0.0%
0.0%
4,530
783 WELDERS AND CUTTERS 100.0%
0.0%
0.0%
0.0%
0.0%
284
785 ASSEMBLERS 0.0%
0.0%
0.0%
100.0%
0.0%
2,899
SUBTOTAL 12.2%
0.0%
48.9%
38.7%
0.0%
9,247
WHOLESALE TRADE - DURABLE GOODS (SIC 50)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
779 MACHINE OPERATORS, NOT SPECIFIED 100.0%
0.0%
0.0%
0.0%
0.0%
328
SUBTOTAL 100.0%
0.0%
0.0%
0.0%
0.0%
328
TOTAL 47.9%
0.0%
34.2%
11.8%
5.9%
37,926
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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