225 records

Is this chemical covered by OSHA PSM, EPA RMP, or both?

225 records, one fact each. Every value is transcribed from the source that states it and carries the sentence it was taken from: 2 sources across 2 sites, last checked 2026-10-07, due for re-check by 2027-08-15. Every record is listed below, each linking the page its value came from.

About this data

Side-by-side comparison of threshold quantities for hazardous chemicals regulated under OSHA's Process Safety Management standard (29 CFR 1910.119 Appendix A) and EPA's Risk Management Program (40 CFR 68.130). Each record is one chemical with the threshold quantity in pounds that triggers obligations under each program. Many chemicals appear on both lists with different thresholds — chlorine is 1,500 lbs under PSM and 2,500 lbs under RMP; ethylene oxide is 5,000 lbs under PSM and 10,000 lbs under RMP. EPA has ~27 chemicals not on the OSHA list and OSHA has ~79 not on EPA's. Answers 'is [chemical] covered by PSM, RMP, or both?', 'what is the threshold quantity for chlorine under each program?', and 'which chemicals have different thresholds under PSM and RMP?'

The data

Where this came from

Every record above links the page it was taken from and quotes the sentence that states it. These are the 2 sources this dataset was assembled from.

• ecfr.govhttps://www.ecfr.gov/current/title-40/chapter-I/subchapter-C/part-68/subpart-F/section-68.130
• osha.govhttps://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.119AppA

Machine-readable

• data.jsonThe whole dataset — every record with its source URL and source quote.
• Open Knowledge Format bundleOne JSON object per line — every record's frontmatter and quoted span exactly as it is held here, in one fetch.
• data.csvThe same records as one flat table, for a spreadsheet or a dataframe. The last four columns are the source URL, the quoted sentence it was read from, the date we last checked it, and which columns are our reading rather than the page's words.
• How this is made and checkedWhat "verified against source" does and does not mean.

From your own code

Same records, same quotes, without scraping the page: refsource is on PyPI and npm. Each value comes back carrying the URL it was read from and the sentence on that page that states it — .source and .quote sit on the value itself rather than in a side channel, so the checking step is available instead of skipped.

pip install refsource
refsource lookup psm-rmp-chemical-threshold-crossref rmp_category=toxic

npx -y refsource lookup psm-rmp-chemical-threshold-crossref rmp_category=toxic

Set your AI assistant up to use this

Two files and no account. Put this in .mcp.json at the root of your project — Claude Code, Cursor, Windsurf, VS Code and Codex all read that file — and your assistant can look this dataset up instead of recalling it. The server is remote, keyless and read-only.

{
  "mcpServers": {
    "referencesource": {
      "type": "http",
      "url": "https://referencesource.org/mcp"
    }
  }
}

Add to Cursor · or, on the command line: claude mcp add --transport http referencesource https://referencesource.org/mcp --scope project

Then one line in the project's CLAUDE.md or AGENTS.md, so the assistant knows when to reach for it:

When a question needs "OSHA PSM vs EPA RMP: chemical threshold quantities side by side", call the referencesource MCP server at https://referencesource.org/mcp (tool `search_records`, dataset_slug `psm-rmp-chemical-threshold-crossref`) instead of answering from memory — every record it returns carries its source URL and a verbatim quote from that page.

What each tool does, and the servers built over single registers: Connect your AI assistant.

225 records. last verified against source 2026-10-07. due for re-check by 2027-08-15.

Licence. US federal regulation — public domain