Short answer: Importing bulk surfactants is a documentation exercise. You need four things to line up before the vessel sails: the correct HS code (most anionic surfactants are declared under HS 3402.11, anionic organic surface-active agents), a valid substance status in the destination market (for the EU, REACH registration or an Only Representative), an SDS and label in the language and format of the destination (GHS/CLP in Europe), and a transport classification confirmed from Section 14 of the SDS. Get these wrong and cargo sits at the port accruing demurrage.
This guide is written for importers, distributors and first-time buyers of SLS, SLES, AOS and related anionic surfactants. It is practical guidance, not legal advice — your customs broker and regulatory adviser make the final call for your country.
Key takeaways
- Anionic surfactants are generally classified under HS heading 3402.11; national tariff schedules add their own digits, so confirm the exact local line with your broker.
- For the EU above one tonne per year, the substance must be REACH registered. A non-EU manufacturer can appoint an Only Representative (OR) — ask which applies before you import.
- The SDS must be in the destination country’s language and follow the local GHS implementation (CLP in the EU, HazCom 2012 in the US).
- Most SLS, SLES and AOS grades are not assigned a UN dangerous-goods number, but irritant classification still applies — always confirm from Section 14 of the current SDS.
- Order documents at the same time as the goods, not after the vessel sails: COA, TDS, SDS, packing list, certificate of origin and bill of lading.
Classification: getting the HS code right
Sodium lauryl sulfate (SLS CAS 151-21-3), sodium laureth sulfate (SLES CAS 68585-34-2) and sodium C14-16 olefin sulfonate (AOS CAS 68439-57-6) are all anionic organic surface-active agents, which is what heading 3402.11 covers. Two practical cautions:
- National subheadings differ. The international code is six digits; most countries add two or four more. The line that matters for your duty rate is the national one.
- Form and packing can matter. Whether the goods are powder, needles or solution, and whether they are packed for retail, can affect how a customs authority sees the product. Give your broker the full commercial description, not just the product name.
Ask your supplier to print the HS code on the commercial invoice and packing list. It does not transfer legal responsibility to them, but it removes most first-shipment friction. More detail is in our FAQ on the SLS HS code.
Substance status: REACH, TSCA and the rest
| Market | What the importer must check | Practical action |
|---|---|---|
| European Union | REACH registration status above 1 t/year per importer | Confirm whether the non-EU manufacturer has appointed an Only Representative, or whether you as importer must register |
| United Kingdom | UK REACH, separate from EU REACH | Confirm UK coverage separately — EU registration does not carry over |
| United States | TSCA inventory listing for the substance | Confirm the CAS number appears on the TSCA inventory; ask for a statement from the supplier |
| South Korea | K-REACH registration above threshold volumes | Confirm an OR arrangement or your own registration obligation |
| Turkey | KKDIK registration | Confirm status with your local representative |
The pattern is the same everywhere: the obligation sits on the importer, and the supplier’s job is to tell you what their substance status actually is. Ask the question in writing before the first order, not after the container lands.
Documentation: the standard set for a bulk shipment
- Commercial invoice — product name, grade, HS code, Incoterm, unit price and total.
- Packing list — number of bags or drums, net and gross weight, lot numbers, pallet count.
- Certificate of Analysis (COA) — one per production lot, with the lot number matching the bag markings. See how to read an SLS COA.
- Technical Data Sheet (TDS) — the specification you are buying to, with test methods.
- Safety Data Sheet (SDS) — 16-section format, in the destination language.
- Certificate of origin — needed if you intend to claim preferential duty under a free trade agreement.
- Bill of lading and, where applicable, insurance certificate and fumigation or ISPM-15 declaration for wooden pallets.
Two details that cause most delays: lot numbers on the COA not matching the markings on the bags, and an SDS in the wrong language. Both are cheap to prevent and expensive to fix after arrival.
Transport classification and handling
Most common anionic surfactant grades — SLS powder and needles, SLES 70% paste, AOS powder and liquid — are not assigned a UN number for transport and are shipped as ordinary chemical cargo. They are still chemical products with irritant properties, so the practical requirements remain: intact packaging, a liner in every bag (SLS is hygroscopic and cakes if it picks up moisture), pallets that meet ISPM-15, and stowage away from food and feed.
Never assume the classification. Confirm it from Section 14 (Transport information) of the current SDS for the exact grade you are buying, and give that SDS to your freight forwarder when you book the shipment.
A realistic import timeline
- Before ordering: confirm HS code with your broker, confirm substance status (REACH/TSCA/K-REACH), request TDS and SDS and review them internally.
- Order placement: agree Incoterm, packaging, document set and whether pre-shipment inspection or a pre-shipment sample is required.
- Production: supplier produces, tests and issues the lot COA; you approve the pre-shipment sample if one was agreed.
- Booking: forwarder receives the SDS Section 14 and books sea freight; packing list and invoice are issued.
- Sailing and arrival: originals of the bill of lading, certificate of origin and other documents are couriered or released electronically; customs clearance follows.
- Receiving: check lot numbers against the COA, inspect packaging integrity, and retain a sample from the lot.
Frequently asked questions
What HS code should I use for SLS, SLES and AOS?
Most anionic surfactants are declared under HS heading 3402.11, which covers anionic organic surface-active agents. Because national tariff schedules extend the six-digit code, your customs broker should confirm the exact national line and duty rate for your country before the first shipment.
Do I need REACH registration to import surfactants into the EU?
If you import more than one tonne per year, someone must hold a REACH registration for the substance. A non-EU manufacturer can appoint an Only Representative to cover its EU customers; otherwise the importer registers. Confirm which arrangement applies before you order.
Are SLS and SLES classified as dangerous goods for shipping?
Most commercial grades are not assigned a UN number and ship as general chemical cargo, but they carry irritant classification. Always verify from Section 14 of the current SDS for the exact grade, and hand that SDS to your forwarder.
Can I use one SDS for all markets?
No. The SDS must follow the local implementation of GHS and be in the local language — CLP format and the destination language for the EU, HazCom 2012 for the US, and local equivalents elsewhere. Ask for the version for your country.
What causes most customs delays on surfactant shipments?
Mismatches, not chemistry: HS code line errors, lot numbers on the COA that do not match the bag markings, an SDS in the wrong language, and a missing certificate of origin when preferential duty was expected.
Should I ask for a pre-shipment sample?
Yes, especially for a new supplier or a new grade. A retained sample from the actual lot lets you test before the goods arrive and gives you something to compare against if a claim arises later.
Written and reviewed by the ORID Chem technical team. Last updated: 29 September 2026. This article is practical guidance for importers and is not legal advice; confirm classification, registration and labelling requirements with your customs broker and regulatory adviser.
