The Amazon FBA hazmat review is the step that catches sellers who did everything else right. Your product is legal to ship. Your carrier accepts it. And your listing is still sitting there marked stranded, with inventory sat in a fulfilment centre you are paying storage on.
Amazon runs its own dangerous goods screening on top of the regulations, with its own documentation requirements and its own thresholds. This guide covers what it wants, what actually causes the delays, and how to get ahead of it before stock ships.
What the Amazon FBA hazmat review actually is
Amazon's dangerous goods programme exists because it operates one of the world's largest fulfilment networks, and a mis-declared aerosol in a tote is its problem as much as yours. Its published guidance sits under Seller Central's dangerous goods identification guidance.
Two things follow from that, and both surprise people.
First, Amazon's screening is triggered by your listing text, not by your product. Automated systems read titles, bullets and ingredient lists looking for hazmat signals — "flammable", "aerosol", "lithium", "bleach", "alcohol". A signal with no cleared documentation against the ASIN strands the listing. This means genuinely unregulated products get flagged all the time, purely on wording.
Second, approval is per ASIN. Clearing one shampoo does not clear the next shampoo, even if the formulation is identical and the only difference is fragrance.
The two documents, and choosing correctly
Almost every submission comes down to one of two documents. Picking the wrong one is the fastest route to a rejected case.
| Situation | Document | Must contain |
|---|---|---|
| Product is regulated for transport | Safety data sheet | Current revision, all 16 sections, section 14 transport data, product name matching the ASIN |
| Product is not regulated | Exemption sheet | Company letterhead, signature, date, ASIN or SKU, explicit statement that the product is not a dangerous good |
| Product contains lithium cells | SDS or exemption sheet, plus battery details | Chemistry, configuration, watt-hour rating or lithium content, cell and battery counts |
The exemption sheet is the one people get wrong. It is not a form you fill in casually; it is a signed statement on your letterhead asserting that a specific product is not a dangerous good. You are making a compliance claim. Sign it only when you have actually classified the product and the answer came back negative.
Why reviews stall
Very few rejections happen because a product is genuinely unshippable. Nearly all of them are document problems.
The document does not match the ASIN
By far the most common. A supplier sends a generic SDS covering their whole product family ("Citrus Cleaner Range") and it goes up against a listing for one 500 ml bottle. The reviewer cannot tie the document to the product, so the case fails. Ask suppliers for product-specific sheets, and if they will not provide one, produce your own exemption sheet naming the exact ASIN.
The SDS is out of date
A sheet from five years ago, citing a superseded regulatory edition, invites a rejection even if the chemistry has not changed.
Battery details are missing
For anything with a cell in it, Amazon wants watt-hour rating or lithium content, chemistry and configuration. "Contains lithium battery" is not sufficient. If you are unsure how to derive the watt-hour figure, our guide to PI965, PI966 and PI967 covers the calculation and the configuration split.
The classification is wrong
The least common cause and the most expensive. If your document asserts a classification that Amazon's reviewers disagree with, you are into a slow back-and-forth with inventory sat idle.
The sequence that avoids stranded stock
Consider how this typically goes wrong. A seller launches a range of scented candle refills. Nothing about them reads as hazardous, so no documentation is prepared. Inventory ships to the fulfilment centre.
The listing copy mentions "fragrance oil". Amazon's screening flags it. The ASIN strands with stock already inside the network — unsellable, accruing storage fees, and now needing an SDS the supplier takes a fortnight to produce. By the time the review clears, the launch window is gone.
The fix is ordering, not effort. Classify at listing creation, not at inventory arrival. The work is identical; only the timing differs, and the timing is what costs money.
Amazon's review is a documentation check, not a classification service. It confirms your paperwork is coherent — it does not tell you what your product is. That determination has to exist before you submit, or you are asking a reviewer to guess.
Classify7 ruleset team
Which products trigger an Amazon FBA hazmat review
Because screening reads your listing rather than your product, the trigger set is wider than "things that are actually regulated". These are the categories that reliably start a review:
| Category | Why it triggers | Often actually regulated? |
|---|---|---|
| Anything containing a cell or battery | Lithium content is screened directly | Yes — Class 9 |
| Aerosols and pressurised sprays | Pressure and propellant | Yes — Class 2 |
| Cleaning products and descalers | Corrosive ingredient names | Often — Class 8 |
| Fragrance, aftershave, nail products | Alcohol and solvent content | Often — Class 3 |
| Alcohol-based cosmetics and sanitisers | Ethanol in the ingredient list | Often — Class 3 |
| Candles, diffusers, essential oils | Wording suggesting flammable oils | Sometimes |
| Magnets and magnetised items | Air transport screening | Sometimes — Class 9 |
| Pool and garden chemicals | Oxidiser and pesticide terms | Yes — Class 5 or 6 |
| Supplements with "extract" or "tincture" | Alcohol carrier wording | Rarely |
The bottom two rows illustrate the point. Plenty of listings enter an Amazon FBA hazmat review purely on wording, and the correct outcome is an exemption sheet backed by a real classification — not a rewrite of the listing to dodge the screen, which leaves you asserting nothing and still carrying the risk.
FBA approval is not shipping approval
Worth stating plainly because it causes real trouble. An Amazon hazmat approval is Amazon's decision about Amazon's network. It says nothing about:
- Whether UPS, FedEx or USPS will carry the same product on your own account
- Whether it can travel by air
- Whether your outer packaging meets the UN performance standard for its packing group
- Whether your shipping papers are correct
Sellers running both FBA and direct fulfilment need both answers. Our carrier-by-carrier restrictions comparison covers the second half, and the carrier rules reference keeps the positions current.
- Submitting a supplier's family-level SDS against a single ASIN.
- Signing an exemption sheet without having classified the product first.
- Sending inventory before the review clears.
- Assuming an approval on one ASIN carries to a variant.
- Treating FBA approval as evidence that your own carrier shipments are compliant.
Doing this across a catalogue
For a handful of SKUs this is manageable by hand. Across hundreds, with variants and reformulations, the reliable approach is to hold a stored determination against every SKU and generate the submission data from it.
POST /api/classify/batch takes up to 500 SKUs in a call and returns the UN number, class, packing group and battery details for each, so you can see which of your catalogue will trigger an Amazon FBA hazmat review before Amazon does. For products that come back not regulated, the same determination is the evidence behind an exemption sheet you can actually stand behind.
If you are still working out which products are in scope, start with dangerous goods classification and whether your product is hazmat. The regulatory baseline sitting underneath Amazon's own rules is PHMSA's hazmat programme, and it applies whether or not a marketplace has approved you.
