A container of household aerosol cleaners arrives at Rotterdam. Customs holds it. The stated classification says non-flammable, but the safety data sheet lists an LPG propellant blend — which makes it Class 2.1 flammable gas under UN 1950. The paperwork contradicts itself, the shipping line will not touch it, and the buyer spends the next six weeks and several thousand euros in demurrage, re-testing and re-declaration while 40,000 cans sit in a bonded warehouse.
This is not a rare story. It is the single most common way aerosol importing goes wrong, and it happens before product quality is ever in question. Compliance in this industry is not a certificate on a wall — it is the difference between a routine delivery and a six-figure problem.
Why Aerosols Are Regulated Like This
An aerosol can is a pressure vessel containing a product plus a propellant. Most propellant systems are flammable hydrocarbons. That combination puts virtually every consumer aerosol into the dangerous goods framework for transport, regardless of how harmless the liquid inside it sounds. The regulations exist because a pallet of pressurized cans in a ship hold or a truck tunnel is a genuinely different risk category than the same liquid in a plastic bottle.
UN 1950: The Classification Everything Hangs On
Aerosols ship under UN 1950 ("Aerosols"), subdivided by hazard: Class 2.1 for flammable propellants or flammable contents, Class 2.2 for non-flammable. Most consumer products using LPG propellant are 2.1. Within that, shipments may move as full ADR/IMDG dangerous goods, or under Limited Quantities (LQ) provisions when package sizes are small — which reduces marking requirements but never removes the classification itself.
What this means for you as a buyer: the classification on the shipping documents must match the SDS, which must match the actual formulation. Any mismatch between the three is what triggers the Rotterdam scenario above. When a supplier's quote says "non-flammable" for a product containing butane, treat it as a warning about their compliance process, not a bargain.
European Union: REACH, CLP and ADR
For the EU, three frameworks matter. REACH governs the chemical substances themselves — every ingredient must be registered or exempt, and suppliers must be able to provide REACH compliance documentation on request. CLP governs labeling: hazard pictograms, signal words and precautionary statements on the can must follow the classified hazards, and the label language must match the member state where the product is sold. ADR governs road transport within Europe and mirrors the IMDG provisions for sea.
The practical failure point is usually CLP label language: a perfectly compliant product can be blocked because the label lacks the required language version for the destination market. This is a question to ask before the first order, not after the first customs query.
United States: DOT, CPSC and EPA
In the US, DOT 49 CFR regulates transport of aerosols, with a special exemption framework for consumer commodities that most household products ship under. CPSC regulates the product in consumers' hands, including the familiar "Warning" front-panel requirements for flammable products. And if the product is an insecticide or any EPA-registered pesticide product, FIFRA adds a registration regime with its own labeling rules — a category where importing an unregistered formulation creates genuine legal exposure, not just customs delays.
Other Major Markets
The UK post-Brexit largely mirrors EU rules under UKCA/UK REACH. The GCC states enforce SASO and GSO standards with Arabic labeling requirements and, for some categories, conformity certificates issued before shipment. Southeast Asian markets vary but increasingly follow UN model rules for transport. The pattern is consistent: transport rules track UN 1950 globally, while product-level labeling is market-specific — which is why "which countries will this ship to?" should be among the first questions your manufacturer asks you.
The Documentation Checklist to Demand From Any Supplier
- SDS (Safety Data Sheet) in the language of each destination market — current version, matching the shipped formulation
- DGD (Dangerous Goods Declaration) for the shipment, correctly classified
- UN-certified packaging specification — the outer cartons must carry the UN mark, not just the cans
- COA (Certificate of Analysis) per batch, for buyers whose downstream customers audit quality
- Market-specific compliance files: REACH statements, CLP-compliant artwork proofs, SASO/GSO certificates where applicable
Working With a Compliant Manufacturer
A factory that exports dangerous goods routinely has all of this ready — SDS templates per market, compliant carton markings, DGD paperwork — because their weekly shipments would not clear ports otherwise. A factory whose compliance documentation appears only after repeated requests is telling you how the relationship will go when something goes wrong. Our quality and compliance documentation is structured exactly for this stage of buyer due diligence, and if your target market has requirements not listed there, ask us directly — the answer is part of the service.
