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Chemical Data Reporting

2020 Chemical Data Reporting Frequent Questions

(Updated November 10, 2020)

These Frequent Questions (FQs) are intended to clarify the reporting requirements for Chemical Data Reporting for the 2020 reporting period.

These FQs should be used for information only and are not a substitute for the Toxic Substances Control Act (TSCA) Chemical Data Reporting (CDR) rule. You should carefully review the CDR regulations, located at 40 CFR Part 711, for specific information on how to comply with CDR requirements.

If you need more help, visit EPA's Chemical Data Reporting website at, contact EPA's TSCA Hotline at or 202-554-1404, or send an email to

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Document Overview

General Chemical Data Reporting Questions

  1. Chemical Data Reporting purpose and history, including the Frank R. Lautenberg Chemical Safety for the 21st Century Act
  2. 2020 Submission Period
  3. Reporting Assistance and Training

Determining the Chemical Substances Subject to the CDR Rule

  1. General
  2. Chemicals Manufactured (Including Imported) for Commercial Purposes
  3. Co-Manufacturing by Contract
  4. Importers
  5. Chemical Substances on the TSCA Inventory - General
  6. Mixtures
  7. Byproducts
  8. Non-TSCA Uses
  9. Exemptions from Reporting

Determining If You Are a Manufacturer or Importer Required to Report

  1. Production Volume Thresholds
  2. Small Manufacturers
  3. Certain Regulated Chemical Substances
  4. Small Quantities for Research and Development
  5. Imported Articles
  6. Impurities
  7. Non-Isolated intermediates

Determining the Information You Must Report

  1. Processing and Use Reporting Threshold
  2. Full Reporting for Chemical Substances
  3. Partial Reporting Exemptions

Completing Form U

  1. General
  2. “Known to or Reasonably Ascertainable by” Reporting Standard
  3. Part I – Company and Site Identification Information
  4. Part II Section A. – Chemical Substance Identification
  5. Part II – Section B. Technical Contact Information
  6. Part II Section C. – Manufacturing Information
  7. Part II – Section D.1 Industrial Processing and Use Data
  8. Part II – Section D.2 Consumer and Commercial Use Data
  9. Parts II and III – Estimating Number of Workers Reasonably Likely to be Exposed to a Chemical Substance
  10. Joint Submissions (Primary Form)

Asserting Confidential Business Information (CBI) Claims and Certification Statements

  1. CBI – General
  2. CBI – Part I Company, Site and Technical Contact Information
  3. CBI – Part II - Sections A-C – Chemical Substance and Manufacturing Information
  4. CBI – Part II - Section D - Processing and Use Information
  5. CBI – The Secondary Form U - Joint Submissions

Other Issues

  1. Recordkeeping Requirements
  2. Penalties for Not Submitting a Report
  3. Additional Regulatory Information for CDR Chemical Substances