Arsenic pentoxide

For Arsenic pentoxide, cas no. is 1303-28-2; cercla rq (lbs) is 1; rcra waste number is P011; regulatory categories is 1,4, verified against its source on 2026-08-05.

Substance: Arsenic pentoxide
CAS No.: 1303-28-2
CERCLA RQ (lbs): 1
RCRA waste number: P011
Regulatory categories: 1,4
EPCRA TPQ (lbs): 100/10,000 per ecfr.gov
EPCRA RQ (lbs): 1 per ecfr.gov

Sourceecfr.gov

Verified2026-08-05

Review by2027-08-05

DatasetUS federal chemical regulatory reporting thresholds by program (CERCLA, EPCRA, CAA)

What the source says

Arsenic pentoxide | 1303-28-2 | 1,4 | P011 | 1 (0.454)

— ecfr.gov, retrieved 2026-08-05

What ecfr.gov says

1303-28-2 | Arsenic Pentoxide | | 1 | 100/10,000 |

— ecfr.gov, retrieved 2026-08-05

Sources

ecfr.govhttps://www.ecfr.gov/current/title-40/chapter-I/subchapter-J/part-302/section-302.4
ecfr.govhttps://www.ecfr.gov/current/title-40/chapter-I/subchapter-J/part-355

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.