FDA Food-Contact Regulation — 21 CFR Parts 174–178 (Indirect Food Additives)
Record:
plastics-polymer-cert-020(Plastics/Polymer, license regulation). Issuing body: US FDA (CFSAN/OFAS).
1. What it is, who issues and enforces it
Under the Federal Food, Drug, and Cosmetic Act §409, any substance that becomes a component of food-contact materials — or that can reasonably be expected to migrate into food — must be cleared for that use. 21 CFR Parts 174–178 codify the indirect food additives regime: Part 174 (general), 175 (adhesives and coatings), 176 (paper/paperboard), 177 (polymers — the part plastics engineers live in), 178 (adjuvants, production aids, sanitizers). Issuer: FDA's Center for Food Safety and Applied Nutrition, Office of Food Additive Safety (OFAS). Enforcer: FDA (inspections, import alerts, warning letters) plus state authorities and — significantly — the tort system and customer specifications.
2. Scope, triggers, thresholds
Applies to food-contact substances (FCSs) — substances intended for use in materials that contact food, including polymers, monomers, additives, colorants, processing aids, and coatings — where there is a reasonable expectation of migration into food. Clearance pathways:
- 21 CFR listing: the substance/use is listed in Parts 174–178 with its limitations (the classic route; e.g., specific polymers listed in §177 with adjuvant limits).
- Food Contact Notification (FCN): a manufacturer-specific clearance (§170.100–106); effective 120 days after FDA acceptance unless objected to. FCNs are proprietary to the notifier and its customers.
- Threshold of Regulation (TOR) exemption: no review needed where dietary exposure is ≤0.5 ppb (and the substance is not a carcinogen).
- GRAS / prior sanction: limited applicability for food-contact uses.
The trigger is intended food-contact use with migration potential — a polymer compounder selling resin "for food packaging" without clearance is the classic violation.
3. Key compliance obligations
- Clearance verification. Every FCS in the formulation (base polymer, each additive, colorant, processing aid) must have a valid clearance for the specific use conditions (food type, temperature, contact duration) — clearances carry Conditions of Use (A–H) and food-type limitations that must match the application.
- Supplier documentation. Obtain FCN numbers or CFR citations from suppliers; maintain a formulation-level clearance file. An FCN held by the resin producer covers downstream users only for the notified use.
- Migration discipline. Where required, extraction/migration testing per FDA methods demonstrates that use conditions stay within the cleared envelope.
- Change control. Any formulation change (new additive, new supplier of an FCS, new use conditions) re-triggers the clearance analysis.
- No objection letters / import compliance: imported food-contact articles must meet the same requirements; FDA import alerts target violative food-contact materials.
4. Penalties and consequences
- FD&C Act: adulterated food (food contacted by an unapproved substance renders the food adulterated, §402) — seizure, injunction, import refusal, criminal prosecution for knowing violations.
- Commercial: retailer/brand food-packaging specifications universally require FDA clearance documentation; failure means loss of the customer, and recalls of packaged food traced to non-compliant packaging are the brand owner's nightmare.
5. Version and live changes (checked 2026-09-30)
- PFAS phase-out: FDA announced that 35 food-contact notifications for PFAS grease-proofing agents are no longer effective (manufacturers voluntarily phased out; FDA confirmed) — PFAS grease-proofers are effectively out of US food packaging. Verify any legacy grease-proofing chemistry against this.
- FCN program integrity: FDA has been reviewing and in some cases questioning older FCNs; the program remains the primary clearance route for new FCSs.
- State overlays: multiple states have enacted their own food-packaging chemical restrictions (e.g., PFAS bans, ortho-phthalates, bisphenols) that go beyond FDA — federal clearance does not preempt these. Always check state law for the target market.
6. Related certifications
- RJG Master Molder I/II (Plastics flagship) — molders producing food-contact articles must hold and understand the clearance file for every material they run; running an unlisted colorant in a food-contact part is the classic molder violation.
- ISO 13485 — for food-contact-adjacent medical packaging; QMS design controls house the clearance evidence.
- No FDA-specific individual certification exists; competence is regulatory-affairs practice.
7. Honest flags
- "FDA approved" is sloppy language — FDA does not approve food-contact materials; it clears substances for uses. Marketing claims should say "compliant" with citation.
- Conditions of Use must match the real application — a clearance for room-temperature dry food does not cover hot-fill or microwave use.
Record: plastics-polymer-cert-020.
Original ETS reference writing, verified against public sources on 2026-09-30. Thin sourcing is flagged inline. Not legal advice — confirm current editions with the issuing body.