Classifying Chemicals & Hazmat for Export

A chemical export carries three overlapping classifications at once: its Schedule B commodity code, its export-control status (often an ECCN tied to the Australia Group or the Chemical Weapons Convention), and its transport hazard class under dangerous-goods rules. These three systems are run by different authorities and are determined independently. For chemicals and hazardous materials, missing any one of them can stop a shipment — or, with controlled precursors, expose the exporter to serious penalties.

Three Systems, Determined Separately

The Commodity Code

Most chemicals classify in Harmonized System Chapters 28 (inorganic) and 29 (organic), with mixtures, preparations, and specific products falling in Chapters 38, 39, and elsewhere depending on composition and use. Pure substances, mixtures, and preparations classify differently, so the chemical’s exact form controls the heading. Report the Schedule B number in your Electronic Export Information. For the method, see how to classify your goods for export, and compare the import side in classifying chemicals and hazardous materials for import.

Export Controls: CWC Schedules, ECCNs, and the Australia Group

This is the layer that turns a routine chemical shipment into a controlled export. Many chemicals are dual-use precursors regulated for nonproliferation reasons, separate from their tariff code:

• Chemical Weapons Convention (CWC) chemicals. Schedule 1, 2, and 3 chemicals face escalating trade restrictions — Schedule 1 trade is highly restricted and limited to CWC member states, Schedule 2 is limited to member states, and Schedule 3 to non-members requires an end-use certificate. BIS is the lead U.S. agency for industry compliance with the CWC.
• ECCNs for chemical precursors. Controlled chemicals appear on the Commerce Control List under ECCNs such as 1C350, 1C351, and 1C355, reflecting Australia Group controls. A listed chemical can require a license depending on the destination.
• The Australia Group. This multilateral regime coordinates export controls on chemical and biological weapon precursors across its member countries; U.S. controls implement it through the EAR.

If your chemical might be a controlled precursor, classify it against the CCL before quoting a shipment. See classifying dual-use goods for export.

EPA: TSCA Section 12(b) Export Notification

Separate from the export-control regime, TSCA Section 12(b) requires exporters to notify the EPA when they export certain chemicals that are subject to specific actions under the Toxic Substances Control Act. The notice identifies the chemical, the destination country, and the relevant TSCA action; EPA accepts these notifications electronically. This is a notification obligation, not a license — but missing it is still a violation.

Transport Hazard Classification

A chemical’s hazard class is its own classification, governed by the UN Model Regulations and implemented for U.S. transport by DOT/PHMSA (49 CFR), by the IMDG Code for ocean freight, and by the IATA Dangerous Goods Regulations for air. Hazard classification drives packaging, marking, labeling, and the dangerous-goods declaration, and it uses the Globally Harmonized System (GHS) for hazard communication. A correct Schedule B number does not satisfy these transport rules — they are determined separately and enforced by the carrier and the regulators.

Frequently Asked Questions

Is the Schedule B code enough to export a chemical? No. The commodity code handles reporting. You must also determine the export-control status (CWC schedule or ECCN), any EPA notification, and the transport hazard class. All four can apply to one shipment.

What is special about CWC Schedule chemicals? Schedule 1, 2, and 3 chemicals face escalating trade restrictions based on the destination’s CWC membership, from near-total restriction (Schedule 1) to an end-use certificate requirement (Schedule 3). BIS administers U.S. compliance.

Do I need a license to export a controlled chemical? It depends on the ECCN and destination. Chemicals listed under ECCNs such as 1C350 reflect Australia Group controls and can require a license. Classify against the Commerce Control List and check the Country Chart.

What is TSCA Section 12(b)? An EPA notification requirement that applies when you export certain chemicals subject to actions under the Toxic Substances Control Act. It is a notice obligation, separate from any export license.

Exporting chemicals or hazardous materials? Reidel Law Firm prepares flat-fee import/export compliance memos and advises exporters on classification and export controls with direct attorney access. Get an export compliance memo →