| Agent Name | ISOBUTENE |
| CAS # | 115-11-7 |
| RTECS # | UD0890000 |
| Agent Code | 81854 |
| SIC | Industry Description (1972) | Total # Employees (Male & Female) |
Total # Female Employees |
| 15 | GENERAL BUILDING CONTRACTORS | 100 | 25 |
| 17 | SPECIAL TRADE CONTRACTORS | 1,111 | |
| 20 | FOOD AND KINDRED PRODUCTS | 148 | |
| 27 | PRINTING AND PUBLISHING | 2,965 | 838 |
| 29 | PETROLEUM AND COAL PRODUCTS | 545 | |
| 30 | RUBBER AND MISC. PLASTICS PRODUCTS | 54 | |
| 31 | LEATHER AND LEATHER PRODUCTS | 36 | |
| 37 | TRANSPORTATION EQUIPMENT | 1,243 | 119 |
| 50 | WHOLESALE TRADE - DURABLE GOODS | 792 | |
| 80 | HEALTH SERVICES | 9 | |
| TOTAL | 7,002 | 982 | |
*(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.