National Occupational Exposure Survey
(1981 - 1983)

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

Agent Name SULFURIC ACID, IRON(3+) SALT (3:2)
CAS # 10028-22-5
RTECS #
Agent Code 33165

SIC Industry Description (1972) Total # Employees
(Male & Female)
Total # Female
Employees
20 FOOD AND KINDRED PRODUCTS 1,815 158
28 CHEMICALS AND ALLIED PRODUCTS 4,404 1,701
31 LEATHER AND LEATHER PRODUCTS 65  
33 PRIMARY METAL INDUSTRIES 2,899 373
34 FABRICATED METAL PRODUCTS 7,981 510
35 MACHINERY, EXCEPT ELECTRICAL 1,094 57
36 ELECTRIC AND ELECTRONIC EQUIPMENT 1,058 144
37 TRANSPORTATION EQUIPMENT 6  
38 INSTRUMENTS AND RELATED PRODUCTS 3,033 1,801
39 MISCELLANEOUS MANUFACTURING INDUSTRIES 101  
49 ELECTRIC, GAS, AND SANITARY SERVICES 1,211 87
73 BUSINESS SERVICES 1,087 508
80 HEALTH SERVICES 10,779 6,697
TOTAL 35,533 12,034

*(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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