| RPRising Pharma Holdings | Decatur | IL | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| APAnzu Power | Alton | IL | Chemical Manufacturing325199 | — | ◐ LIKELY ACTIVE |
| BHBaxter Healthcare CORP | Round Lake | IL | Chemical Manufacturing325412 | — | ◐ LIKELY ACTIVE |
| BHBaxter Healthcare CORP | Round Lake | IL | Chemical Manufacturing325412 | 500+ | ◐ LIKELY ACTIVE |
| BQBeauty Quest Group | Rantoul | IL | Chemical Manufacturing325620 | 100-499 | ◐ LIKELY ACTIVE |
| BQBeauty Quest Group | Rantoul | IL | Chemical Manufacturing325620 | — | ◐ LIKELY ACTIVE |
| BLBrainbits LLC | Springfield | IL | Chemical Manufacturing325414 | — | ◐ LIKELY ACTIVE |
| CSChemtech Services INC | Lockport | IL | Chemical Manufacturing325998 | — | ◐ LIKELY ACTIVE |
| CCConsolidated Chemical Works LTD | Chicago | IL | Chemical Manufacturing325612 | — | ◐ LIKELY ACTIVE |
| CLCpc Laboratories INC | Chicago | IL | Chemical Manufacturing325611 | — | ◐ LIKELY ACTIVE |
| CLCresco Labs-joliet | Joliet | IL | Chemical Manufacturing325411 | 100-499 | ◐ LIKELY ACTIVE |
| DNDyno Nobel Wolf Lake | Wolf Lake | IL | Chemical Manufacturing325920 | 20-99 | ◐ LIKELY ACTIVE |
| EDEast Dubuque Nitrogen Fertilizers LLC | East Dubuque | IL | Chemical Manufacturing325311 | 100-499 | ◐ LIKELY ACTIVE |
| ECEastman Carpentersville Plant | Carpentersville | IL | Chemical Manufacturing325211 | — | ◐ LIKELY ACTIVE |
| EIEcolab INC | Joliet | IL | Chemical Manufacturing325611 | 100-499 | ◐ LIKELY ACTIVE |
| ELElco Laboratories, INC. | University Park | IL | Chemical Manufacturing325612 | — | ◐ LIKELY ACTIVE |
| EIEldorado, Il | Eldorado | IL | Chemical Manufacturing325311 | — | ◐ LIKELY ACTIVE |
| GDGeneral Dynamics Ots Test Rang | Marion | IL | Chemical Manufacturing325920 | — | ◐ LIKELY ACTIVE |
| GIGurtler Industries INC | South Holland | IL | Chemical Manufacturing325611 | 100-499 | ◐ LIKELY ACTIVE |
| HGHeisler Green Chemical CO | Chicago | IL | Chemical Manufacturing325998 | — | ◐ LIKELY ACTIVE |
| HCHenkel CORP | Elgin | IL | Chemical Manufacturing325520 | 20-99 | ◐ LIKELY ACTIVE |
Hudson Technologies CO | Champaign | IL | Chemical Manufacturing325120 | — | ◐ LIKELY ACTIVE |
| ISIndustrial Specialty Chemicals INC | South Holland | IL | Chemical Manufacturing325998 | — | ◐ LIKELY ACTIVE |
| IJINEOS Joliet | Channahon | IL | Chemical Manufacturing325194 | 100-499 | ◐ LIKELY ACTIVE |
| IIInnophos INC | Chicago Heights | IL | Chemical Manufacturing325130 | — | ◐ LIKELY ACTIVE |
| JCJones Chemicals INC | Willow Springs | IL | Chemical Manufacturing325130 | — | ◐ LIKELY ACTIVE |
| LPLuster Products | Chicago | IL | Chemical Manufacturing325620 | 100-499 | ◐ LIKELY ACTIVE |
| MTMatheson Trigas INC | Joliet | IL | Chemical Manufacturing325120 | — | ◐ LIKELY ACTIVE |
| MSMexichem Specialty Resins, INC. | Henry | IL | Chemical Manufacturing325211 | 100-499 | ◐ LIKELY ACTIVE |
| MSMulti-pack Solutions LLC | Mt Prospect | IL | Chemical Manufacturing325611 | — | ◐ LIKELY ACTIVE |
| NWNalco Water | Chicago | IL | Chemical Manufacturing325998 | 100-499 | ◐ LIKELY ACTIVE |
| NVNemera Vernon Hills LLC | Vernon Hills | IL | Chemical Manufacturing325412 | 20-99 | ◐ LIKELY ACTIVE |
| OIOctochem INC | Vandalia | IL | Chemical Manufacturing325998 | — | ◐ LIKELY ACTIVE |
| OCOlin CORP | Joliet | IL | Chemical Manufacturing325130 | — | ◐ LIKELY ACTIVE |
| RCRustoleum CORP | Vernon Hills | IL | Chemical Manufacturing325510 | — | ◐ LIKELY ACTIVE |
| SUSchirm USA - Midwest | Benton | IL | Chemical Manufacturing325320 | 20-99 | ◐ LIKELY ACTIVE |
| SOSeymour of Sycamore INC | Sycamore | IL | Printing and Related Support Activities323111 | 100-499 | ◐ LIKELY ACTIVE |
| SCSt Clair Service CO (belleville) | Belleville | IL | Chemical Manufacturing325314 | — | ◐ LIKELY ACTIVE |
Sysmex America INC | Vernon Hills | IL | Chemical Manufacturing325413 | — | ◐ LIKELY ACTIVE |
Sysmex America INC | Mundelein | IL | Chemical Manufacturing325413 | — | ◐ LIKELY ACTIVE |
| UCUniversal Chemicals and Coatings, INC. | Elgin | IL | Chemical Manufacturing325510 | — | ◐ LIKELY ACTIVE |
| VVValley View Industries INC | Crestwood | IL | Chemical Manufacturing325211 | 20-99 | ◐ LIKELY ACTIVE |
| VPVital Proteins LLC | Franklin Park | IL | Food Manufacturing311999 | 100-499 | ◐ LIKELY ACTIVE |
| WSWoodstock Sterile Solutions INC | Woodstock | IL | Chemical Manufacturing325412 | 100-499 | ◐ LIKELY ACTIVE |
| WWyckles | Decatur | IL | Chemical Manufacturing325412 | — | ◐ LIKELY ACTIVE |
| ABAbf Bridge | Waukegan | IL | Chemical Manufacturing325611 | — | ◐ LIKELY ACTIVE |
| ALAbf Labs, INC. | Waukegan | IL | Chemical Manufacturing325620 | — | ◐ LIKELY ACTIVE |
| ABAbraxis Bioscience LLC | Melrose Park | IL | Chemical Manufacturing325412 | — | ◐ LIKELY ACTIVE |
| ALAccu Labs INC | Chicago | IL | Chemical Manufacturing325180 | — | ◐ LIKELY ACTIVE |
| ADAccurate Dispersions | Homewood | IL | Chemical Manufacturing325510 | — | ◐ LIKELY ACTIVE |