Your supplier sent a revised safety data sheet
This one applies to a chemical whose safety data sheet you already sent in. The clock starts when you learn of significant new information on the sheet — a changed hazard classification, a new health effect. Your inventory has not moved at all.
What you owe, and by when
Updated safety data sheet — within 3 months.
The rule: 42 U.S.C. 11021(d)(2)
Example: started 2026-04-14, due 2026-07-14.
Free. No account, no email.
Who it goes to
- State Emergency Response Commission (SERC)
- Local Emergency Planning Committee (LEPC)
- The fire department with jurisdiction
Some states change this list or add a filing of their own — we write down what each one told us.
What this usually looks like
An email from a supplier with a new PDF attached, or a sheet reissued after the manufacturer re-classified the product. Nothing at your site changed, which is exactly why this one gets missed.
If you have already missed it
The obligation attaches to the information, not to the calendar, so it stays open until you send the updated sheet on.
The same sheet matters to OSHA too: it is what your written hazard communication program points to. What that program has to contain.
How we help with this one
The checker is free and needs no account: tell it what you keep on site and it works out which of these clocks are running for you, with the rule behind each one. Paying is what turns them into a watched list — we hold the dates and tell you once, before each is due.
Check my facility