FDA compliant food packaging and how to check supplier claims
FDA compliant packaging needs a valid regulatory basis for its components and intended use. Check supplier claims, FCN coverage and material restrictions.
For food packaging, "FDA compliant" should mean its components have a valid US food-contact regulatory basis and meet applicable requirements. A label that only says "FDA food grade" or "food grade" does not establish compliance for your intended use. FDA's regulatory-status guidance says a material's status depends on each individual substance. Check identity, specifications and use limits, rather than treating the claim as a certificate.
What does FDA compliant mean in practice?
Start with the exact package and what it will hold. A resin's permitted use does not settle the status of its additives, coatings or other components. Each needs an applicable basis. Under 21 CFR 174.5, suitable purity and good manufacturing practice still apply. The amount added to food from that use must stay within any prescribed limit, or within the amount reasonably required for the physical or technical effect in the article. The substance must not be intended to have a physical or technical effect in the food itself, unless a regulation in Parts 170-189 permits it.
"FDA approved" needs similar care. FDA does approve food additives, subject to their approved uses, specifications and restrictions. That does not turn a supplier's statement about an additive into proof that FDA approved the finished package. Ask what the claim covers. FDA's approval explainer makes the use-specific restrictions clear.
Which FDA packaging regulations or authorizations apply?
There is more than one route. A supplier should identify the route supporting the relevant substances, rather than cite "21 CFR compliant" without a section.
| Regulatory basis | What to check |
|---|---|
| Food-contact regulation | The specific section, substance identity, specifications and permitted uses. |
| Effective food contact notification, or FCN | The covered substance, manufacturer or supplier, intended use and limitations. |
| Generally recognized as safe, or GRAS | Whether the supporting basis covers the intended use. |
| Prior sanction | Whether an FDA or USDA letter from before 1958 covers this substance and this use. |
| Threshold-of-regulation exemption, or TOR | FDA's exemption decision and the application it covers. |
FDA's regulatory-status guidance explains the regulation, FCN, GRAS and prior-sanction routes. A prior sanction is a letter from FDA or USDA, issued before 1958, offering no objection to a specific use of a specific substance. FDA points to Parts 182-186 for GRAS listings and Part 181 for prior sanctions. Not every GRAS substance, and not every prior sanction, appears in those public lists. Absence from one inventory does not, by itself, show that a substance is unlawful.
Part 174 contains the general provisions. Parts 175 through 178 cover adhesives and coatings, paper and paperboard, polymers, and adjuvants, production aids and sanitizers. 21 CFR 174.5(d) also recognizes substances that are GRAS in or on food, GRAS for the intended packaging use, prior-sanctioned, permitted by those parts or by §179.45, or used under an effective FCN. A component used in compliance with an applicable regulation in 21 CFR 174-179 needs no further FDA review, but the cited section still has to match the substance, the specifications and the use you are buying.
A TOR exemption requires FDA action. A low test result does not let a supplier declare an exemption on its own. 21 CFR 170.39 sets several conditions and provides for FDA to notify the requester of its decision.
How to check FDA packaging requirements with your supplier
Treat the steps below as a purchasing checklist. They are not a mandatory FDA form.
- Identify the exact product or grade and finished article. Describe the food, contact time, temperature and whether use is repeated.
- Ask for the regulatory basis. Request the applicable CFR section, FCN or other supporting basis for the relevant components.
- Compare the restrictions with your use. Check identity, specifications and permitted conditions, rather than accepting the presence of a citation alone.
- Check FCN traceability and current status where relevant. Match the source of the substance to the covered manufacturer or supplier.
- Where the authorization sets specifications or tests, ask for evidence the product meets them for this article and use.
These checks follow FDA's authorization framework. FDA says you may ask the manufacturer for a letter of guaranty certifying that a particular product is acceptable for the intended food-contact use. That letter is optional, not a universal certificate.
FDA distinguishes frozen storage without in-container thermal treatment, high-temperature sterilization and high-temperature cooking. Fatty and alcoholic foods are separate categories. Permission for storage doesn't automatically cover cooking. Use FDA's food-type and conditions-of-use tables alongside the authorization, not instead of it.
Why an FCN number is not enough
An FCN is effective only for the manufacturer or supplier identified in it. Purchasers can rely on a covered source's substance within the notification's limits. A chemically identical substance from another producer does not automatically qualify. A distributor can still supply a covered substance, provided you can trace it to the relevant source. See FDA's effective-FCN inventory guidance and its traceability explanation.
An old supplier letter is a poor stand-in for a current check. FDA can determine that an FCN is no longer effective if the intended use is no longer safe. It can also do so if the identified manufacturer or supplier has stopped or plans to stop producing, supplying or using the substance for that use, or if a food-additive regulation or an issued TOR exemption now covers it. The date the notice publishes in the Federal Register is the date the notification stops being effective. A separate compliance date may still apply. Those dates are set out in 21 CFR 170.105. FDA's inventory directory links the list of FCNs that are no longer effective. Check that list as well as the effective inventory.
Is food grade plastic or silicone enough?
"Polyethylene food grade" does not identify every condition that matters. Neither does a bare "FDA compliant plastic" line. 21 CFR 177.1520 sets the polymer identity, specifications and testing requirements, and optional adjuvants have their own conditions. The table distinguishes polyethylene for non-cooking articles from a separate cooking-use category. Check the grade, formulation and intended use.
"FDA approved food grade silicone" is not proof about a finished repeated-use article. 21 CFR 177.2600 covers specified rubber polymers and adjuvants, including specified silicone polymers, not every product called silicone. Applicable aqueous- and fatty-food extraction requirements concern the food-contact surface in its finished form.
RegAffairs AI explains these regulatory routes in its answer about FDA compliant food packaging. A supplier letter still needs to identify the particular product and intended food-contact use.