Diisocyanates
Diisocyanates releases at Carlisle Polyurethane Systems fell from 118k lb to 37k lb (69% lower) between 2023 and 2024.
Total reported releases 37k lb fell sharply year over year (-69%). Total releases concentrations have more than halved since 2017.
2500 ADIE RD, Maryland Heights, Missouri · 325211 · Chemicals · operated by Carlisle Cos INC
Diisocyanates releases at Carlisle Polyurethane Systems fell from 118k lb to 37k lb (69% lower) between 2023 and 2024.
Diisocyanates concentrations have more than halved since 2017.
Polycyclic aromatic compounds volumes here are too small to anchor a multi-year trend; YoY movement is still shown above.
Toluene diisocyanate (mixed isomers) concentrations are roughly unchanged from 2023.
Within 3 miles of this facility (71 Census block groups, population-weighted demographics): a population of 94,802. Why we surface this →
Low-income
People of color
Under age 5
Over age 64
Source: Census ACS 2018-2022 block-group demographics, population-weighted across the 3-mile buffer around this facility (from USEPA-clone/EJAM-open blockgroupstats). Indicator-level percentile and EJ-disparity scores are surfaced on the county page and the state page — they describe wider regional exposure burdens, not effects attributable to a single facility.
Source. EPA Toxics Release Inventory · retrieved 2026-05-07. Reporting year 2024. TRI is a federal public-domain dataset under 17 USC §105.
What this is not. TRI quantifies releases reported by the facility under EPCRA §313 — not ambient air or water concentrations measured at receptors. We do not attribute individual health outcomes to specific facilities; that exceeds what the data can support.