National Occupational Exposure Survey
(1981 - 1983)

Estimated Numbers of Employees Potentially Exposed to Specific Agents by 2-Digit Standard Industrial Classification (SIC)*

Agent Name MALEIC ANHYDRIDE
CAS # 108-31-6
RTECS # ON3675000
Agent Code 43660

SIC Industry Description (1972) Total # Employees
(Male & Female)
Total # Female
Employees
25 FURNITURE AND FIXTURES 847  
26 PAPER AND ALLIED PRODUCTS 1,046  
27 PRINTING AND PUBLISHING 10,843 868
28 CHEMICALS AND ALLIED PRODUCTS 26,756 4,485
29 PETROLEUM AND COAL PRODUCTS 230 56
30 RUBBER AND MISC. PLASTICS PRODUCTS 5,022 2,425
33 PRIMARY METAL INDUSTRIES 4,850 14
34 FABRICATED METAL PRODUCTS 367  
35 MACHINERY, EXCEPT ELECTRICAL 4,385 2,606
36 ELECTRIC AND ELECTRONIC EQUIPMENT 2,082 387
37 TRANSPORTATION EQUIPMENT 8,465 1,501
38 INSTRUMENTS AND RELATED PRODUCTS 150 18
39 MISCELLANEOUS MANUFACTURING INDUSTRIES 4,533 1,425
44 WATER TRANSPORTATION 4,340  
45 TRANSPORTATION BY AIR 1,554  
49 ELECTRIC, GAS, AND SANITARY SERVICES 1,038  
50 WHOLESALE TRADE - DURABLE GOODS 1,249  
55 AUTOMOTIVE DEALERS & SERVICE STATIONS 153  
73 BUSINESS SERVICES 3,497 908
80 HEALTH SERVICES 144 115
TOTAL 81,551 14,807

*(1) By survey design, not all 2-digit SICs were surveyed. (2) The estimates for each 2-digit SIC apply only to the 3- and 4-digit SICs surveyed within the 2-digit SIC. Not all SICs were surveyed. (3) When using the estimates, standard errors associated with estimates should be considered. (4) 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.

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