| Agent Name | HYDROQUINONE |
| CAS # | 123-31-9 |
| RTECS # | MX3500000 |
| Agent Code | M0747 |
| Code | Occupation Description (1980) | Total # Employees (Male & Female) |
Total # Female Employees |
| 019 | MANAGERS AND ADMINISTRATORS, N.E.C. | 1,519 | |
| 027 | PERSONNEL, TRAINING, AND LABOR RELATIONS SPECIALISTS | 19 | 6 |
| 048 | CHEMICAL ENGINEERS | 7 | 2 |
| 053 | CIVIL ENGINEERS | 1,612 | |
| 055 | ELECTRICAL AND ELECTRONIC ENGINEERS | 1,195 | 206 |
| 059 | ENGINEERS, N.E.C. | 9,242 | 1,666 |
| 064 | COMPUTER SYSTEMS ANALYSTS AND SCIENTISTS | 386 | 125 |
| 073 | CHEMISTS, EXCEPT BIOCHEMISTS | 1,526 | 235 |
| 074 | ATMOSPHERIC AND SPACE SCIENTISTS | 74 | |
| 078 | BIOLOGICAL AND LIFE SCIENTISTS | 28 | 20 |
| 083 | MEDICAL SCIENTISTS | 97 | 87 |
| 084 | PHYSICIANS | 5,802 | 3,890 |
| 086 | VETERINARIANS | 562 | |
| 095 | REGISTERED NURSES | 10,822 | 10,139 |
| 099 | OCCUPATIONAL THERAPISTS | 550 | 540 |
| 103 | PHYSICAL THERAPISTS | 373 | 256 |
| 105 | THERAPISTS, N.E.C. | 396 | 396 |
| 184 | TECHNICAL WRITERS | 172 | 103 |
| 185 | DESIGNERS | 1,641 | 853 |
| 188 | PAINTERS, SCULPTORS, CRAFT-ARTISTS, AND ARTIST PRINTMAKERS | 3,377 | 1,889 |
| 189 | PHOTOGRAPHERS | 10,811 | 1,610 |
| 194 | ARTISTS, PERFORMERS, AND RELATED WORKERS, N.E.C. | 295 | 66 |
| 195 | EDITORS AND REPORTERS | 102 | |
| 203 | CLINICAL LABORATORY TECHNOLOGISTS AND TECHNICIANS | 3,401 | 2,421 |
| 204 | DENTAL HYGIENISTS | 85 | 49 |
| 205 | HEALTH RECORD TECHNOLOGISTS AND TECHNICIANS | 21 | 21 |
| 206 | RADIOLOGIC TECHNICIANS | 23,471 | 15,566 |
| 207 | LICENSED PRACTICAL NURSES | 586 | 586 |
| 208 | HEALTH TECHNOLOGISTS AND TECHNICIANS, N.E.C. | 2,838 | 2,109 |
| 213 | ELECTRICAL AND ELECTRONIC TECHNICIANS | 5,005 | 367 |
| 216 | ENGINEERING TECHNICIANS, N.E.C. | 6,112 | 1,018 |
| 217 | DRAFTING OCCUPATIONS | 154 | 58 |
| 223 | BIOLOGICAL TECHNICIANS | 686 | 300 |
| 224 | CHEMICAL TECHNICIANS | 3,564 | 1,505 |
| 225 | SCIENCE TECHNICIANS, N.E.C. | 352 | 313 |
| 235 | TECHNICIANS, N.E.C. | 6,977 | 988 |
| 308 | COMPUTER OPERATORS | 2,454 | 282 |
| 319 | RECEPTIONISTS | 336 | 336 |
| 345 | DUPLICATING MACHINE OPERATORS | 827 | 584 |
| 347 | OFFICE MACHINE OPERATORS, N.E.C. | 30 | 19 |
| 363 | PRODUCTION COORDINATORS | 506 | 506 |
| 364 | TRAFFIC, SHIPPING, AND RECEIVING CLERKS | 1,882 | 239 |
| 365 | STOCK AND INVENTORY CLERKS | 174 | 59 |
| 379 | GENERAL OFFICE CLERKS | 2,025 | 930 |
| 389 | ADMINISTRATIVE SUPPORT OCCUPATIONS, N.E.C. | 52 | |
| 426 | GUARDS AND POLICE, EXC. PUBLIC SERVICE | 140 | |
| 444 | MISCELLANEOUS FOOD PREPARATION OCCUPATIONS | 39 | |
| 446 | HEALTH AIDES, EXCEPT NURSING | 168 | 148 |
| 447 | NURSING AIDES, ORDERLIES, AND ATTENDANTS | 570 | 439 |
| 449 | MAIDS AND HOUSEMEN | 1,825 | 1,230 |
| 453 | JANITORS AND CLEANERS | 17,416 | 511 |
| 458 | HAIRDRESSERS AND COSMETOLOGISTS | 33,479 | 25,846 |
| 487 | ANIMAL CARETAKERS, EXCEPT FARM | 684 | 403 |
| 496 | TIMBER CUTTING AND LOGGING OCCUPATIONS | 397 | 227 |
| 503 | SUPERVISORS, MECHANICS AND REPAIRERS | 217 | |
| 505 | AUTOMOBILE MECHANICS | 1,046 | |
| 508 | AIRCRAFT ENGINE MECHANICS | 6,707 | 57 |
| 514 | AUTOMOBILE BODY AND RELATED REPAIRERS | 3,393 | |
| 515 | AIRCRAFT MECHANICS, EXC. ENGINE | 609 | 21 |
| 516 | HEAVY EQUIPMENT MECHANICS | 1,426 | |
| 518 | INDUSTRIAL MACHINERY REPAIRERS | 1,981 | |
| 523 | ELECTRONIC REPAIRERS, COMMUNICATIONS AND INDUSTRIAL EQUIPMENT | 56 | |
| 533 | MISCELLANEOUS ELECTRICAL AND ELECTRONIC EQUIPMENT REPAIRERS | 12 | |
| 534 | HEATING, AIR CONDITIONING, AND REFRIGERATION MECHANICS | 3,526 | 25 |
| 535 | CAMERA, WATCH, AND MUSICAL INSTRUMENT REPAIRERS | 160 | |
| 544 | MILLWRIGHTS | 390 | |
| 547 | SPECIFIED MECHANICS AND REPAIRERS, N.E.C. | 1,589 | 80 |
| 549 | NOT SPECIFIED MECHANICS AND REPAIRERS | 6,324 | 1,041 |
| 565 | TILE SETTERS, HARD AND SOFT | 2,932 | |
| 567 | CARPENTERS | 18,153 | 227 |
| 575 | ELECTRICIANS | 4,667 | |
| 579 | PAINTERS, CONSTRUCTION AND MAINTENANCE | 7,198 | 650 |
| 585 | PLUMBERS, PIPEFITTERS, AND STEAMFITTERS | 358 | |
| 589 | GLAZIERS | 449 | |
| 597 | STRUCTURAL METAL WORKERS | 1,033 | |
| 599 | CONSTRUCTION TRADES, N.E.C. | 3,816 | 254 |
| 633 | SUPERVISORS, PRODUCTION OCCUPATIONS | 2,530 | 205 |
| 634 | TOOL AND DIE MAKERS | 1,326 | 53 |
| 637 | MACHINISTS | 6,282 | 232 |
| 645 | PATTERNMAKERS AND MODEL MAKERS, METAL | 1,681 | 250 |
| 646 | LAY-OUT WORKERS | 52 | |
| 647 | PRECIOUS STONES AND METALS WORKERS (JEWELERS) | 948 | |
| 649 | ENGRAVERS, METAL | 592 | |
| 653 | SHEET METAL WORKERS | 771 | |
| 656 | PATTERNMAKERS AND MODEL MAKERS, WOOD | 82 | 3 |
| 657 | CABINET MAKERS AND BENCH CARPENTERS | 1,107 | 452 |
| 658 | FURNITURE AND WOOD FINISHERS | 1,838 | 370 |
| 675 | HAND MOLDERS AND SHAPERS, EXCEPT JEWELERS | 569 | |
| 676 | PATTERNMAKERS, LAY-OUT WORKERS, AND CUTTERS | 513 | 207 |
| 678 | DENTAL LABORATORY AND MEDICAL APPLIANCE TECHNICIANS | 1,581 | |
| 679 | BOOKBINDERS | 462 | 231 |
| 683 | ELECTRICAL AND ELECTRONIC EQUIPMENT ASSEMBLERS | 4,765 | 3,061 |
| 684 | MISCELLANEOUS PRECISION WORKERS, N.E.C. | 1,968 | 211 |
| 689 | INSPECTORS, TESTERS, AND GRADERS | 15 | |
| 694 | WATER AND SEWAGE TREATMENT PLANT OPERATORS | 115 | |
| 696 | STATIONARY ENGINEERS | 96 | |
| 703 | LATHE AND TURNING MACHINE SET-UP OPERATORS | 259 | |
| 709 | GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS | 840 | 369 |
| 715 | MISCELLANEOUS METAL, PLASTIC, STONE, AND GLASS WORKING MACHINE OPERATORS | 13 | |
| 717 | FABRICATING MACHINE OPERATORS, N.E.C. | 29 | 14 |
| 719 | MOLDING AND CASTING MACHINE OPERATORS | 1,441 | 187 |
| 723 | METAL PLATING MACHINE OPERATORS | 1,983 | 218 |
| 724 | HEAT TREATING EQUIPMENT OPERATORS | 81 | 40 |
| 733 | MISCELLANEOUS WOODWORKING MACHINE OPERATORS | 115 | 7 |
| 734 | PRINTING MACHINE OPERATORS | 18,204 | 572 |
| 735 | PHOTOENGRAVERS AND LITHOGRAPHERS | 5,349 | 432 |
| 736 | TYPESETTERS AND COMPOSITORS | 30,259 | 9,547 |
| 737 | MISCELLANEOUS PRINTING MACHINE OPERATORS | 1,232 | |
| 744 | TEXTILE SEWING MACHINE OPERATORS | 181 | 91 |
| 749 | MISCELLANEOUS TEXTILE MACHINE OPERATORS | 59 | |
| 753 | CEMENTING AND GLUING MACHINE OPERATORS | 728 | 530 |
| 754 | PACKAGING AND FILLING MACHINE OPERATORS | 89 | |
| 756 | MIXING AND BLENDING MACHINE OPERATORS | 3,004 | 137 |
| 757 | SEPARATING, FILTERING, AND CLARIFYING MACHINE OPERATORS | 5,603 | 386 |
| 759 | PAINTING AND PAINT SPRAYING MACHINE OPERATORS | 6,713 | 648 |
| 765 | FOLDING MACHINE OPERATORS | 19 | |
| 766 | FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD | 17 | |
| 768 | CRUSHING AND GRINDING MACHINE OPERATORS | 55 | 29 |
| 769 | SLICING AND CUTTING MACHINE OPERATORS | 17 | |
| 774 | PHOTOGRAPHIC PROCESS MACHINE OPERATORS | 24,719 | 7,429 |
| 777 | MISCELLANEOUS MACHINE OPERATORS, N.E.C. | 7,114 | 828 |
| 779 | MACHINE OPERATORS, NOT SPECIFIED | 2,976 | 492 |
| 783 | WELDERS AND CUTTERS | 3,705 | 484 |
| 784 | SOLDERERS AND BRAZERS | 90 | 90 |
| 785 | ASSEMBLERS | 53,976 | 29,174 |
| 787 | HAND MOLDING, CASTING, AND FORMING OCCUPATIONS | 687 | 46 |
| 789 | HAND PAINTING, COATING, AND DECORATING OCCUPATIONS | 166 | 166 |
| 793 | HAND ENGRAVING AND PRINTING OCCUPATIONS | 526 | 33 |
| 794 | HAND GRINDING AND POLISHING OCCUPATIONS | 19 | 19 |
| 796 | PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS | 549 | 167 |
| 798 | PRODUCTION SAMPLERS AND WEIGHERS | 296 | |
| 804 | TRUCK DRIVERS, HEAVY | 108 | |
| 859 | MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS | 268 | |
| 869 | CONSTRUCTION LABORERS | 2,741 | |
| 888 | HAND PACKERS AND PACKAGERS | 2,589 | 2,468 |
| 889 | LABORERS, EXCEPT CONSTRUCTION | 5,732 | 2,682 |
| TOTAL | 442,749 | 144,063 | |
*(1) The estimates for each occupation apply across the surveyed industries in which the agent was observed. Not all industries were surveyed, and not all agents were observed in all surveyed industries. (2) When using the estimates, 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.