Amazon decides hazmat status per finished product, not per category, and it decides it mostly from your own listing text. Its help page is explicit: “The physical and chemical properties of a unique, finished product define whether or not it’s a dangerous good. That’s why there is no predefined classification based on product type” (Dangerous goods identification guide (hazmat), checked 2026-08-01). A flagged ASIN is cleared with one of two documents — a safety data sheet (SDS) or an exemption sheet — and the Dangerous Goods team reviews each submission within two business days, with every resubmission restarting that clock.
This guide covers classification and the paperwork that clears it. Category approval is a separate workflow with separate documents, and it lives in the Amazon gated categories and ungating guide.
Two Rulebooks, Kept Apart
Everything below comes from one of two source families, and they are not interchangeable.
| Source family | What it governs | Primary pages |
|---|---|---|
| US transport and workplace regulation | Whether the material is legally hazardous, its class, what an SDS must contain | 49 CFR 173.2, 49 CFR 171.8, OSHA 29 CFR 1910.1200 App. D |
| Amazon platform policy | Whether FBA accepts it, what to upload, review timing, the consequences of missing the window | Required documentation, Review process, Classification FAQ, Program T&Cs |
Other Amazon pages quoted below are linked inline where used. Amazon pages were read on 2026-08-01 for the US marketplace; the eCFR text the same day from Title 49, “up to date as of 7/29/2026”. We do not operate a Seller Central account, so every step below comes from published text, not the logged-in interface.
Gate 1 — Could This Be a Dangerous Good at All?
Category approval is not classification. Approval is granted broadly, and Amazon’s FAQ warns that “some of those ASINs could be dangerous goods (hazmat)” because “products are classified as dangerous goods (hazmat) at the finished product level, and not at the category or subcategory level.”
No warning label is not evidence. The identification guide states that “Any warning labels or warning phrases on a product package indicates that it might be regulated as a dangerous good”. It then closes the loophole: “The absence of any labels or warnings does not mean that they are not dangerous goods” — naming cosmetics and magnetized speakers as unlabelled examples.
Your listing copy is the trigger. The review page is blunt: “Catalog information is the main way that we identify a possible dangerous good (hazmat).” One listed review trigger is simply that “Batteries are mentioned on the product detail page or in buyer reviews.”
Amazon’s Examples of possible dangerous goods lists candidates by category — hairspray, nail polish, essential oils, aerosol foods, power banks, camp stoves, hand warmers, light-up shoes, chemistry sets, adhesives. A sourcing extension that flags hazmat is a prompt to check, not a classification; those tools are compared in the wholesale sourcing software guide.
Gate 2 — Which Class, and Is It FBA-Eligible?
The nine-class system is regulatory, not Amazon’s. US class names are fixed in Table 1 to § 173.2, “Hazardous material classes and index to hazard class definitions” (source note: [87 FR 79774, Dec. 27, 2022]). Amazon’s pages use international wording for the same divisions — 2.3 is POISONOUS GAS in the CFR and “Toxic gas” on Amazon — so supplier paperwork and Amazon’s form will name the same thing differently.
Prohibited for FBA: 1, 2.3, 4.2, 4.3, 6.2 and 7. Sellable in limited quantities only: 2.1, 2.2, 3, 4.1, 5.1, 5.2, 6.1, 8 and 9 — the FBA Dangerous Goods Program terms state the same set: “Only materials belonging to classes and divisions 2.1, 2.2, 3, 4.1, 5.1, 5.2, 6.1, 8, and 9 are Program eligible, under certain conditions.”
“Limited quantity” is a regulatory term, not a volume Amazon invents. 49 CFR 171.8 defines it as “the maximum amount of a hazardous material for which there is a specific labeling or packaging exception.” Amazon’s program terms make units unfulfillable if “Their volume or weight per Program Unit is above the limited quantity (aka ORM-D) threshold defined by the regulations, such as 49 CFR” — while its identification guide cites 49 CFR for program shipments and, for the FBA-allowed list, “packed in limited quantities, as defined in the latest version of IATA DGR”. Same concept, two standards on one page; confirm the threshold against whichever your packaging and carrier reference.
Lithium is the most common single trigger. Amazon publishes an approve/reject grid by energy content and marketplace. For the US store: cells up to 60 Wh (lithium metal up to 5 g) approved — one of only four markets on that grid clearing the 20–60 Wh band — and cells above 60 Wh rejected; batteries up to 300 Wh (lithium metal up to 25 g) approved, above 300 Wh rejected (Requirements for lithium batteries, checked 2026-08-01). The program terms repeat that ceiling: units are unfulfillable if “They contain, are sold with or are lithium-ion batteries with an energy content above 300 Watt-hours.” Amazon also “requires all sellers to upload a test summary at ASIN setup” under UN 38.3.
Gate 3 — The Fields Amazon Asks For at Listing Time
Filling these in accurately shortens the review rather than avoiding it: Amazon’s line is that complete, correct information is classified “within two business days”, while “incomplete, inaccurate, or conflicting information may be blocked for sale through FBA”. It recommends supplying the information “even if your product is not regulated as a dangerous good (hazmat)”. The dangerous goods block asks for the UN number — from the SDS or the manufacturer, with the UN prefix attached and, in Amazon’s words, “without any spaces in between” (its example is UN1266) — plus weight in kg, volume in millilitres for a gas or liquid, the GHS/CLP pictograms on the packaging or SDS, and where available the flash point in °C and the SDS URL.
Battery-powered items get a second block: whether batteries are required, included, button-cell or multiple; cell composition, count, weight and watt-hours; packing configuration (“packed with”, “contained in equipment”, or standalone); IEC code; and a mandatory self-certification on state of charge. Skipping that last one has a stated consequence: “If you do not answer this question then your lithium battery powered products will not be eligible for shipment via air methods.”
Gate 4 — SDS or Exemption Sheet?
The wrong one costs a full review cycle — the document upload page states: “If you submit an exemption sheet when an SDS was requested, your exemption sheet will be rejected.”
Exemption sheets are accepted for exactly two categories — “Products that do not contain harmful chemicals” and “Batteries and battery-powered devices” — and “If you submit an exemption sheet for products not in these two categories, then it will be rejected.” Templates download from the Manage dangerous goods classification page and must be uploaded as Excel files.
An SDS is the chemical-side document: “A safety data sheet (or SDS, previously known as a material safety data sheet) contains 16 sections prepared by the manufacturer or importer.” Amazon’s bar has four parts — created or updated “within the past five years”, carrying “new GHS/CLP hazard identification information”, matching the listing’s product name and manufacturer/brand name, and including “all 16 standard SDS sections”.
That last item is where platform policy and US regulation part company. OSHA’s own rule — “Appendix D to § 1910.1200—Safety Data Sheets (Mandatory)” — requires only sections 1–11 and 16: “Sections 12-15 may be included in the SDS, but are not mandatory.” A US-only SDS can therefore be fully OSHA-compliant and still be rejected by Amazon, which wants all sixteen. Section 14, Transport information, is one of OSHA’s optional four, and its first listed element is “(a) UN number;” — the exact field Amazon’s listing form demands. If a supplier’s SDS stops at section 11, that is what to ask them to extend.
Why the Dangerous Goods Review Rejects Documents
Amazon’s classification FAQ publishes the common rejection reasons. Run these six before you upload:
- “The product name or brand on the SDS does not exactly match the product name or brand on the detail page.” If you edit the detail page to match, “you need to submit the SDS again after you have made the edits”.
- “Information in the hazard identification section and the transportation section conflicts” — Amazon’s example is a product called flammable in the hazard identification section but not in the transportation section (sections 2 and 14 on the same page’s 16-section list).
- “The SDS does not contain all 16 mandatory sections.”
- “The product’s flash point is below 140 degrees Fahrenheit (60 degrees Celsius) but the product is declared as not regulated, instead of flammable, in the transportation section.”
- “The SDS is either not dated or is over 5 years old.”
- “The document uploaded is not an SDS (for example, test report or certification sheet) and therefore cannot be used for classification.”
Two mechanical rules also cost re-uploads. A parent document does not cover its children: “The appropriate document must be submitted for each ASIN variant”. And a bundle needs one SDS per chemical-based component. Uploads accept “.docx, .doc, .xlsx, .xls, .pdf, .jpg, and .png”, and the upload page caps each file at “20 MB or less”.
The Clock, and What Runs Out
| Event | Published timing |
|---|---|
| First review of a complete submission | “within two business days (Monday through Friday, excluding public holidays)” |
| Each resubmission after a rejection | “an additional two business days for review upon resubmission” |
| Documentation requested while inventory sits in a fulfillment center | “You will have 14 business days to provide the requested documentation. If the documentation is not provided during this period, the inventory will be disposed of, at your expense.” |
| Waitlist to enrol in the FBA Dangerous Goods Program | “The typical waiting time for program enrollment is five business days”; “there is no way to expedite enrollment” |
Amazon’s worked SLA examples put a weekend submission at “End of Wednesday (clock starts Monday)”. Because each rejection restarts the clock, a brand-name mismatch found on the third attempt costs six business days rather than two.
Status matters meanwhile. The same program page states that “Products in Unable to classify status when received at an Amazon fulfillment center will be set to Inactive”. Those units “can’t be sold or replenished until they’re correctly classified.” Units that clear may still move to a site that handles hazmat, a transfer Amazon says “can take several weeks”. Shipment creation enforces per-site ceilings too — Maximum allowable quantity limits tells you to split the shipment or retry later — and none of it touches your IPI: hazmat capacity limits “are not based on your Inventory performance index score.” For the rest of FBA storage behaviour, see the FBA size tiers guide and the FBA overview.
If the classification itself looks wrong, the published route is to “upload a new SDS or exemption sheet that supports your claim or click Dispute classification on Manage dangerous goods classification.”
One Conflict Worth Knowing About
Two official Amazon pages disagree on whether hazmat can be inbounded with a partnered carrier. Both were live on 2026-08-01:
- The Amazon Partnered Carrier program page: “FBA eligible dangerous goods (hazmat) can be shipped via Amazon partnered carriers.”
- The FBA Dangerous Goods Program Terms and Conditions: “You must not ship Program Units using an Amazon Partnered Carrier.” That page’s own stamp reads “Last updated: September 5, 2019.”
The terms page is the older document by its own date and applies to Program Units under the Dangerous Goods Program; the carrier page speaks about FBA-eligible dangerous goods generally. We cannot say which controls a given shipment — the shipment-creation workflow is what accepts or blocks a carrier selection, so treat that screen as the operative answer.
On seller-fulfilled orders you are the shipper of record, while Amazon’s Dangerous Goods policy notes “You are not the shipper of record when we ship products to customers as part of the Fulfillment by Amazon (FBA) program.” If hazmat pushes a SKU toward self-fulfilment, the trade-offs are in the FBA vs FBM comparison, and prep options in the FBA prep software guide.
Pre-Upload Checklist
- Place the SKU against Table 1 to § 173.2, then against Amazon’s prohibited set (1, 2.3, 4.2, 4.3, 6.2, 7).
- Pick the document type first: chemical content → SDS; batteries or no harmful chemicals → exemption sheet.
- Check the SDS header: dated within five years, GHS/CLP hazard information present, all 16 sections there.
- Diff the SDS product name and manufacturer against the detail page, character for character.
- Read section 2 against section 14 for contradictions, and check the flash point against the 60 °C line.
- For batteries: watt-hours, cell count, packing configuration, state-of-charge answer, UN 38.3 test summary.
- One document per child ASIN, one SDS per bundle component, accepted format, 20 MB or less.
- If inventory is already at a fulfillment center, the 14-business-day window runs from Amazon’s email.
Frequently Asked Questions
Does being ungated in a category mean my product is not hazmat?
No. Amazon states products “are classified as dangerous goods (hazmat) at the finished product level, and not at the category or subcategory level”. An approved category may still contain hazmat ASINs. Category approval is a separate workflow — see the ungating guide.
How long does the Amazon dangerous goods review take?
Two business days for a complete, correct submission, and a further two business days for each resubmission after a rejection.
What is the difference between an SDS and an exemption sheet?
An SDS is the manufacturer’s 16-section chemical document. An exemption sheet is an Amazon Excel template accepted for two cases only: batteries and battery-powered devices, and products without harmful chemicals.
What happens if I miss the 14-business-day window?
Amazon states that inventory already at a fulfillment center “will be disposed of, at your expense” if the requested documentation is not provided in that period, and its program terms add that the seller reimburses Amazon for those disposal costs.
Conclusion
The dangerous goods review reads your listing, not your intent. Most of the friction is mechanical: a name that does not match character for character, an SDS that stops at section 11 because it was written to a US-only standard, a blank battery field, an exemption sheet sent where a chemical document was asked for. Each costs another two business days, and each is visible before you upload. The regulatory side is settled in 49 CFR and the OSHA hazard communication standard, the platform side on Amazon’s help pages — keep the two straight.
Every source cited here was read on 2026-08-01 for the US marketplace; regulations and platform policies change, so verify before acting. This is a documentation framework, not legal or transport-compliance advice.