4-Aminodiphenyl requirements

Yes. Under 1910.1011 4‑Aminodiphenyl is identified as a substance subject to OSHA’s carcinogen listing and related requirements.

• The text for 1910.1011 explicitly names the substance and refers employers to the broader carcinogen list at 1910.1003 for the set of 13 carcinogens.
• If you need to confirm how this listing applies at your site, consult both 1910.1011 and 1910.1003.

You must consult the companion carcinogen rule referenced in the section.

• 1910.1011 identifies 4‑Aminodiphenyl and directs readers to 1910.1003 for the broader set of carcinogen requirements.
• The short text of 1910.1011 itself does not provide numerical exposure limits or detailed controls; follow the applicable provisions in 1910.1003 and other relevant 29 CFR 1910 requirements for implementation.

Under OSHA’s rules, 1910.1011 is part of Subpart Z, Toxic and Hazardous Substances, within 29 CFR part 1910.

• The section header and metadata show this is a Subpart Z regulation; see 1910.1011 and the broader Part 1910 page at 1910.
• Treat compliance actions for 4‑Aminodiphenyl within the overall hazardous-substance framework in 29 CFR part 1910, Subpart Z.

Yes. Discovering 4‑Aminodiphenyl requires consulting the referenced carcinogen requirements and other applicable OSHA rules.

• 1910.1011 points you to 1910.1003 for the list of carcinogen requirements; you should review those requirements and any related 29 CFR 1910 standards (for example, hazard communication, PPE, and recordkeeping) that apply on your site via 1910.
• If you have questions about how a specific activity is covered, consider consulting OSHA interpretation letters or your regional OSHA office for clarifications.

No. The brief listing in 1910.1011 identifies the substance but does not, by itself, create obligations beyond the requirements in the referenced carcinogen provisions.

• The section directs employers to the broader carcinogen framework at 1910.1003 for substantive requirements.
• OSHA interpretation practice makes clear that letters and listings explain requirements; they do not add new employer obligations beyond the standards themselves (see, for example, the asbestos interpretation at https://www.osha.gov/laws-regs/standardinterpretations/2024-11-14).

State-plan states must have programs at least as effective as Federal OSHA, so they generally follow federal listings but may have different or stricter requirements.

• 1910.1011 is a federal listing; State-plan programs are required to maintain standards that are at least as effective as federal OSHA but may adopt stricter provisions.
• OSHA interpretation letters (for instance, the asbestos letter at https://www.osha.gov/laws-regs/standardinterpretations/2024-11-14) remind employers that State plans may have additional or different requirements and that you should check your State plan if applicable.

No; interpretation letters explain OSHA requirements but do not change the underlying standards.

• The listing in 1910.1011 is enforced according to the standards in the OSHA regulations; interpretation letters clarify application but do not create new obligations beyond those standards (see https://www.osha.gov/laws-regs/standardinterpretations/2024-11-14).
• For implementation questions (for example, whether a specific activity triggers employer duties), consult the text of 1910.1003 and applicable interpretation letters or contact OSHA.

No. The COVID-19 recordkeeping enforcement stay did not change OSHA’s ongoing recordkeeping and reporting requirements for other hazards.

• OSHA’s memorandum on the COVID-19 recordkeeping enforcement stay explains OSHA will not enforce certain COVID‑19-specific recordkeeping provisions but that OSHA will "continue to enforce applicable recordkeeping and reporting requirements under 29 CFR part 1904," which cover workplace illness and injury recordkeeping relevant to other hazards (see https://www.osha.gov/laws-regs/standardinterpretations/2025-02-05).
• For exposures or illnesses related to 4‑Aminodiphenyl, follow existing recordkeeping and reporting obligations under the applicable OSHA recordkeeping rules and the carcinogen provisions cited at 1910.1003.

Start with the standard and then consult OSHA interpretations or your regional OSHA office for practical clarifications.

• Read the listing at 1910.1011 and the associated carcinogen requirements at 1910.1003.
• If the standards’ language does not resolve your situation, review relevant OSHA letters of interpretation (for example, see the guidance documents on OSHA’s website such as https://www.osha.gov/laws-regs/standardinterpretations/2024-11-14) or contact your regional OSHA compliance office for application-specific guidance.