Under 1910.1016 what chemical does this standard cover?
The standard covers N‑Nitrosodimethylamine. See the OSHA rule at 29 CFR 1910.1016 for the official identification of the substance.
OSHA 1910.1016
N-Nitrosodimethylamine requirements
Subpart Z
Questions & Answers
Under 1910.1016 where within OSHA's regulations is the N‑Nitrosodimethylamine standard located (part and subpart)?
The N‑Nitrosodimethylamine standard is located in 29 CFR Part 1910, Subpart Z (Toxic and Hazardous Substances). You can confirm this placement at 29 CFR 1910 and at the specific rule 29 CFR 1910.1016.
Under 1910.1016 is N‑Nitrosodimethylamine identified as one of OSHA's designated carcinogens in 1910.1003?
Yes—N‑Nitrosodimethylamine is associated with OSHA's list of carcinogens referenced by the carcinogen provisions. The standard itself points readers to the carcinogen rule: "See [1910.1003, 13 carcinogens]"; see 29 CFR 1910.1016 and the carcinogen reference at 29 CFR 1910.1003.
Under 1910.1016 does the standard record its Federal Register amendment history, and where can I find those amendment dates?
Yes—the section includes its Federal Register history with amendment dates and citations. The published amendment history (e.g., 39 FR 23502, 40 FR 23072, 41 FR 35184, etc.) appears in the official rule text at 29 CFR 1910.1016.
Under 1910.1016 does OSHA treat this standard as part of general industry requirements?
Yes—the rule for N‑Nitrosodimethylamine is codified under 29 CFR Part 1910, which is OSHA's general industry regulatory part. See 29 CFR 1910 and the specific N‑Nitrosodimethylamine provision at 29 CFR 1910.1016.
Under 1910.1016 do OSHA Letters of Interpretation create new employer obligations or requirements beyond the standard text?
No—OSHA Letters of Interpretation do not create new regulatory obligations; they explain how OSHA interprets and applies existing standards. Several letters explicitly state this point; for example, the asbestos remediation interpretation notes that such letters "explain these requirements and how they apply to particular circumstances" but "do not create additional employer obligations" (see the asbestos letter at https://www.osha.gov/laws-regs/standardinterpretations/2024-11-14 and the N‑Nitrosodimethylamine rule at 29 CFR 1910.1016).
Under 1910.1016 can State Plan states have different or additional requirements for N‑Nitrosodimethylamine?
Yes—States that operate their own OSHA‑approved State plan may enforce requirements that are at least as effective as federal OSHA and sometimes more stringent. OSHA advises that State plans can have different interpretations or requirements; see the discussion about State plans in the rim‑wheel servicing interpretation (https://www.osha.gov/laws-regs/standardinterpretations/2024-08-01) and consult 29 CFR 1910.1016 for the federal text.
Under 1910.1016 does OSHA indicate where the official electronic code (e-CFR) source is stated in the rule header?
Yes—the rule header for the N‑Nitrosodimethylamine standard references the e‑CFR as the GPO source for the regulatory text. The standard entry shows that the GPO source is the e‑CFR and the provision is published at 29 CFR 1910.1016.
Under 1910.1016 where should an employer look first for regulatory obligations specifically about carcinogens?
Employers should consult the carcinogen provisions referenced by the rule—specifically 29 CFR 1910.1003—and then the N‑Nitrosodimethylamine rule at 29 CFR 1910.1016 for any chemical‑specific requirements.
Under 1910.1016 does OSHA warn that interpretation letters or guidance can change over time?
Yes—OSHA letters of interpretation commonly note that enforcement guidance and interpretations may change as OSHA updates rules or guidance. Several letters (for example, the head protection and asbestos letters) include language that their interpretations "may be affected by changes to OSHA rules"; see an example at https://www.osha.gov/laws-regs/standardinterpretations/2024-11-14 and the rule text at 29 CFR 1910.1016.
Under 1910.1016 how does the rule reference the broader list of OSHA carcinogens (practical next step)?
The rule directs employers to consult the OSHA carcinogen list by stating "See 1910.1003, 13 carcinogens," so the practical next step is to review 29 CFR 1910.1003 and then the chemical‑specific text at 29 CFR 1910.1016 for any applicable employer duties.