Reference Source

Sulfur Trioxide

For Sulfur Trioxide, cas no. is 7446-11-9; epcra tpq (lbs) is 100; epcra rq (lbs) is 100, verified against its source on 2026-08-05.

Substance
Sulfur Trioxide
CAS No.
7446-11-9
EPCRA TPQ (lbs)
100
EPCRA RQ (lbs)
100
Sourceecfr.gov
Verified2026-08-05
Review by2027-08-05
DatasetUS federal chemical regulatory reporting thresholds by program (CERCLA, EPCRA, CAA)

What the source says

100 | 7446-11-9 | Sulfur Trioxide |

— ecfr.gov, retrieved 2026-08-05

Source

Last verified against source: 2026-08-05. Scheduled for re-check by: 2027-08-05. This page as Markdown · OKF bundle · full dataset as JSON.