1-bromopropane: proposed ECEL and use restrictions
U.S. EPA proposed use restrictions and workplace protections for 1-bromopropane in 2024, including an eight-hour exposure limit of 0.05 ppm for covered continuing uses. No final rule or binding compliance date was verified.
The numerical limits are proposed. The regulatory table specifies ppm; an inconsistent narrative reference must not be used to change the unit.
- Legal status
- Proposed; no final rule verified
- Source check
- Sep 17, 2026
- Topic
- 1-Bromopropane
- Technical review
- Jiaxi · 2026-09-23
What changed
Previous requirement
Current duties remain; this is not an adopted federal OSHA PEL change.
New requirement or current position
Proposed ECEL 0.05 ppm and action level 0.03 ppm as 8-hour TWAs for covered uses.
Who it affects
- Degreasing
- Electronics
- Metal products
- Dry cleaning
- Adhesives
Dates and milestones
Commencement and compliance dates can differ. Read the conditions beside each date, including any stay or local adoption requirement.
- Announcement or publication
- Aug 8, 2024
- Recorded effective date
- Not established or not applicable
Selected exposure values
These values need the scope, limit type and averaging period shown below. A proposed or advisory value is not a binding limit.
1-Bromopropane
0.05 ppm| Averaging period | 8-hour TWA |
|---|---|
| Limit type | Proposed TSCA ECEL |
| Scope | Proposal only; specified WCPP uses |
1-Bromopropane
0.03 ppm| Averaging period | 8-hour TWA |
|---|---|
| Limit type | Proposed TSCA action level |
| Scope | Proposal only; specified WCPP uses |
What this could mean for your IH program
Advisory interpretation: Keep proposed limits outside the active compliance-limit set until a final rule is verified.
Confirm applicability with a qualified practitioner before changing your program.
Questions and qualifications
- No final notice located in targeted search; docket not exhaustively searched. One narrative line in proposal has a ppb typo; regulatory table and main ECEL text consistently specify ppm.
Source evidence
- 1-Bromopropane: proposed TSCA risk-management rule
EPA / Federal Register · 89 FR 65066; III.B.2.a and proposed 751.407
August 8, 2024 proposal specifies ECEL 0.05 ppm and action level 0.03 ppm, each 8-hour TWA. Values remain proposed.
- Risk Management for 1-Bromopropane
EPA · Managing Risks
Current page still describes proposal: bans certain consumer/workplace uses and requires WCPP and dermal protections for specified continuing uses.
Managing your IH program
Explore how LEAP IH supports industrial hygiene data management and risk assessment.
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