Skip to main content
U.S. flag

An official website of the United States government

Here’s how you know

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

HTTPS

Secure .gov websites use HTTPS
A lock (LockA locked padlock) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

    • Environmental Topics
    • Air
    • Bed Bugs
    • Chemicals and Toxics
    • Climate Change
    • Emergency Response
    • Environmental Information by Location
    • Environmental Justice
    • Greener Living
    • Health
    • Land, Waste, and Cleanup
    • Lead
    • Mold
    • Pesticides
    • Radon
    • Science Topics
    • Water Topics
    • A-Z Topic Index
    • Laws & Regulations
    • By Business Sector
    • By Topic
    • Compliance
    • Enforcement
    • Guidance
    • Laws and Executive Orders
    • Regulations
    • Report a Violation
    • Environmental Violations
    • Fraud, Waste or Abuse
    • About EPA
    • Our Mission and What We Do
    • EPA Administrator
    • Headquarters Offices
    • Regional Offices
    • Labs and Research Centers
    • Planning, Budget, and Results
    • Organization Chart
    • EPA History
    • Staff Directory
Emergency Planning and Community Right-to-Know Act (EPCRA)
Contact Us

Updates for 311 MSDS reporting

How would a facility report a hazardous chemical that they acquired above the reporting threshold after the October 17, 1987 deadline, for Section 311?

An update must be submitted within three months anytime there is discovery of significant new information, or if an unreported hazardous chemical is present in a quantity exceeding the reporting thresholds.  This update can be the MSDS for the new hazardous chemical, an updated list of hazardous chemicals, or an addendum to the original MSDS list submitted.

  • EPCRA Home
  • About EPCRA
  • Emergency Planning
  • Emergency Release Notifications
  • Hazardous Chemical Inventory Reporting
  • EPCRA Trade Secrets
  • EPCRA Site Map
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on May 30, 2023
United States Environmental Protection Agency

Discover.

  • Accessibility Statement
  • Budget & Performance
  • Contracting
  • EPA www Web Snapshot
  • Grants
  • No FEAR Act Data
  • Plain Writing
  • Privacy
  • Privacy and Security Notice

Connect.

  • Data.gov
  • Inspector General
  • Jobs
  • Newsroom
  • Open Government
  • Regulations.gov
  • Subscribe
  • USA.gov
  • White House

Ask.

  • Contact EPA
  • EPA Disclaimers
  • Hotlines
  • FOIA Requests
  • Frequent Questions

Follow.