Chemical Export Documentation Guide: Aligning REACH, TSCA, CEPA, CSCL, and GHS with Letter of Credit Requirements

The Unique Documentation Challenge for Chemical Exporters

Chemical companies operate at a difficult intersection: every shipment must satisfy both the regulatory requirements of the importing country and the documentary requirements of the issuing bank's letter of credit. These two systems were designed independently and do not speak the same language. A Safety Data Sheet prepared under GHS Rev. 9 uses IUPAC nomenclature; an LC may describe the same substance by its commercial trade name. A TSCA export notification references an EPA inventory accession number; the LC references only a goods description negotiated in a sales contract.

The consequence of misalignment is two-fold: regulatory non-compliance (which can halt the shipment at customs, trigger fines, or void the export license) and LC discrepancies (which can delay payment by weeks or cause outright refusal). Unlike most exporters, chemical companies can suffer both in the same transaction.

This guide maps each major regulatory framework to its LC documentation touchpoints, identifies the common failure modes, and provides a working alignment checklist your export team can apply to every chemical shipment.

Regulatory Frameworks: What Each Requires at Export

REACH (EU) — Regulation (EC) No 1907/2006

REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals) governs chemical substances manufactured in or imported into the European Economic Area. For chemical exporters shipping to the EU, the key obligations are:

Registration

Substances exported to EU importers in quantities of 1 tonne per year or more must be registered with ECHA (European Chemicals Agency) by the EU importer (known as the "Only Representative" arrangement for non-EU manufacturers, under REACH Article 8). While the registration obligation falls on the EU side, exporters are frequently required to provide registration data — particularly the REACH registration number — on the commercial invoice or in an attached declaration. If your LC requires a REACH registration number, obtain the current registration number from your EU importer or Only Representative and validate it against the ECHA dissemination portal before finalizing documents.

Safety Data Sheets (SDS)

Under REACH Article 31 and Annex II (as updated by Commission Regulation (EU) 2020/878), suppliers must provide a 16-section SDS in the official language(s) of the EU member state(s) of destination. Many LCs — particularly from EU buyers — require the SDS as a mandatory LC document. When this is the case:

• The substance identification in SDS Section 1 (product identifier, CAS number, EC/List number, REACH registration number) must correspond to the goods description on the commercial invoice
• The SDS must be dated and bear the supplier's name and address as the issuing entity — this must match the LC beneficiary if the SDS is issued by the exporting company
• ISBP 745 paragraph B8 notes that if a document is required but its issuer is not specified in the LC, any entity may issue it — but the content must satisfy LC requirements; if the LC says "Supplier's SDS," the document must be issued by the beneficiary

Authorisation and Restriction

Substances on REACH Annex XIV (Authorisation List) or Annex XVII (Restrictions) require authorisation or are subject to use/import restrictions. If your substance appears on either annex, the EU importer's authorisation reference number may be required on the import entry and may need to appear in the supporting documentation bundle. Check ECHA's REACH Authorisation List before every shipment of SVHCs (Substances of Very High Concern).

TSCA (US) — Toxic Substances Control Act, 15 U.S.C. §2601 et seq.

TSCA governs chemical substances in US commerce. For US-based chemical exporters, two TSCA provisions directly affect export documentation:

TSCA Inventory Status

Substances must be listed on the TSCA Chemical Substance Inventory to be manufactured or imported into the US. For exporters, the inventory status matters because if a substance is not on the inventory, its export may trigger PMN (Pre-Manufacture Notification) obligations for the receiving US importer if they plan to re-import. More practically, if your LC requires a TSCA compliance certificate or inventory status letter, the substance's EPA accession number on that certificate must match the substance identified in the commercial invoice.

TSCA Section 12(b) Export Notifications

Under TSCA Section 12(b) and 40 CFR Part 707, US exporters must notify EPA before exporting substances that are subject to:

• A final or proposed TSCA Section 4 test rule
• A TSCA Section 5 order (Significant New Use Rules — SNURs)
• A TSCA Section 6 action (risk management rule)
• A TSCA Section 7 court order

The first export notification in any calendar year triggers a reporting obligation. EPA must be notified at least 30 days before export, and the notice must include the chemical identity, quantity, destination country, and exporter information. The export notification receipt (EPA Form 7710-56) is sometimes required as a supporting document under an LC. If your LC requires proof of TSCA compliance, confirm whether a Section 12(b) notification is applicable — if it is, the notice must be on file before the shipment date and its details must align with the LC-described shipment.

TSCA Section 13 Import Certification

While Section 13 applies to US importers, US exporters should be aware that foreign buyers may request a TSCA certification letter confirming that the exported substance is not in violation of TSCA. This is distinct from an export notification and is often required by sophisticated buyers as a condition of the sales contract, which then flows into the LC document list as a "TSCA compliance certificate" or "TSCA letter."

CEPA (Canada) — Canadian Environmental Protection Act, 1999, S.C. 1999, c. 33

Canada's CEPA governs the assessment and management of chemical substances. For chemical exporters shipping into Canada, the critical documentation framework is the Domestic Substances List (DSL) and Non-Domestic Substances List (NDSL).

DSL/NDSL Status

Substances on the DSL may be imported into Canada without pre-notification. Substances not on the DSL but present on the NDSL may be imported subject to reporting requirements under the New Substances Notification Regulations (NSN Regs). Substances on neither list require a full New Substance Notification (NSN) before import.

If your LC involves a Canadian buyer and requires a CEPA compliance declaration, the exporter typically provides a letter confirming the substance is listed on the DSL (or NDSL with the applicable SIN number) and is not subject to prohibitions under CEPA Schedule 1 (List of Toxic Substances). This letter must identify the substance by the same name, CAS number, and description as the commercial invoice — a mismatch creates both a regulatory and an LC discrepancy.

Export of Prohibited or Restricted Substances

Under CEPA Part 5, certain substances controlled under international agreements (Rotterdam Convention, Stockholm Convention) require an export notification to Environment and Climate Change Canada (ECCC) at least 30 days before export. The notification reference number is sometimes required on the export permit and may appear as a required document in the LC.

CSCL (China) — Chemical Substance Control Law, Order No. 7 (2020)

China's Measures for the Environmental Management of New Chemical Substances (Order No. 7 of the Ministry of Ecology and Environment, effective January 2021) replaced the previous Order No. 7 of 2010. For exporters shipping chemical substances to China:

IECSC — Inventory of Existing Chemical Substances in China

Substances on China's IECSC (Inventory of Existing Chemical Substances Produced or Imported in China) may be imported without registration. Substances not listed require a New Chemical Substance (NCS) registration from MEE (Ministry of Ecology and Environment) before import. Chinese buyers frequently request an IECSC confirmation letter or MEE registration certificate as a pre-shipment document, which may then appear as a required document in the LC.

The IECSC search is conducted through MEE's official chemical substance database. The substance identity used in the IECSC lookup (CAS number, IUPAC name, molecular formula) must be consistent with the commercial invoice description — a discrepancy between the registered name and the invoice name can cause the document to fail both Chinese customs clearance and LC compliance checks simultaneously.

GHS — Globally Harmonized System of Classification and Labelling of Chemicals

GHS is not a single regulation but a UN framework ("Purple Book," 10th revised edition as of 2023) that individual jurisdictions implement via their own legislation. The EU implements GHS through the CLP Regulation (EC) No 1272/2008; the US through OSHA's Hazard Communication Standard (29 CFR 1910.1200, revised 2012 and 2024); Canada through WHMIS 2015; China through GB/T 17519 and GB 13690.

SDS Format Requirements

A GHS-compliant SDS must follow the 16-section format and include, at minimum:

• Section 1: Chemical identifier (substance name, CAS No., EC No., REACH registration number if applicable), supplier details
• Section 2: Hazard classification and labelling elements (signal word, hazard statements, precautionary statements per GHS revision applicable to the jurisdiction)
• Section 3: Composition/information on ingredients (CAS numbers, weight percentages for mixtures)
• Section 14: Transport information (UN number, proper shipping name, hazard class, packing group, environmental hazards, EMS)

When an SDS is a required LC document, the version presented must be current (within the last 3 years in most jurisdictions, or as otherwise specified by the LC) and prepared in the language required by the LC. A Section 1 identifier that contradicts the invoice goods description is a discrepancy regardless of its regulatory compliance.

How Regulatory Documents Interact with LC Requirements

The following diagram describes the four interaction points where regulatory compliance and LC compliance can conflict:

1. Substance identity: The chemical name, CAS number, and specification used in the regulatory certificate must correspond to the LC goods description. IUPAC names, common names, and trade names must be reconciled.
2. Document issuer: Regulatory certificates issued by a government body, notified body, or inspection agency must be issued to the party the LC specifies. If the LC requires "Beneficiary's TSCA Certificate," a certificate issued by the US importer will not satisfy the requirement.
3. Dates: Regulatory certificates must be valid at the date of LC presentation. Pre-dated certificates that have expired, or post-dated certificates issued after the presentation date, may be refused. Some LCs specify certificate validity windows (e.g., "SDS issued within 12 months of shipment date").
4. Language and format: Regulatory certificates prepared in a language not specified or accepted by the LC must be accompanied by a certified translation if the LC requires it. Banks do not translate documents — they compare what is presented against what is required.

Common Failures: Regulatory Certificate Mismatching LC Description

Failure Mode	Example	Result
Trade name on invoice, IUPAC name on SDS	Invoice: "Glacial Acetic Acid, 99.8%" / SDS Section 1: "Ethanoic acid, CAS 64-19-7"	Bank queries inconsistency; not a hard discrepancy under ISBP 745 if CAS matches, but creates examination delay
TSCA cert describes different purity grade	Invoice: "Sulfuric Acid 98% Technical Grade" / TSCA letter: "Sulfuric Acid 93%"	Discrepancy — documents conflict; bank refuses under UCP 600 Art. 14(d)
REACH registration number missing when required	LC field 46A requires "Invoice showing REACH Reg. No."; invoice omits the number	Invoice discrepancy; requires amendment or re-issue of invoice
Expired SDS presented	LC: "Current SDS"; SDS is dated 4 years prior	Discrepancy if "current" is defined in the LC or by jurisdiction standard (EU: 3 years); bank may refuse
CSCL IECSC confirmation uses different CAS number	Invoice: CAS 7647-01-0 (Hydrochloric acid) / IECSC letter: CAS 7664-93-9 (incorrect — that is sulfuric acid)	Hard conflict between documents; regulatory non-compliance AND LC discrepancy

Document Alignment Checklist for Chemical Shipments

Apply this checklist to every chemical LC presentation before submitting to the bank:

1. Extract the "anchor" substance description from LC field 45A. Note: chemical name(s), CAS number(s), purity/grade, HS code if specified.
2. Verify SDS Section 1 substance identity (product name, CAS No., EC No.) corresponds to the LC anchor description. Any synonym or trade name used in the invoice should appear in SDS Section 1 or be cross-referenced.
3. Check REACH registration number against ECHA dissemination portal if an EU destination is involved and the number is required. Confirm the registrant matches your company or your EU Only Representative.
4. Confirm TSCA inventory status via EPA's TSCA Chemical Substance Inventory if shipping from the US. Prepare and retain the Section 12(b) notification receipt if applicable; include it in the LC document bundle if required.
5. Verify DSL/NDSL status for Canadian destinations. If not on DSL, confirm NSN filing status and include the notification reference number in any CEPA compliance declaration.
6. Confirm IECSC listing for Chinese destinations. If not listed, verify MEE NCS registration status and obtain the registration certificate for inclusion.
7. Check GHS SDS version currency: Is the SDS within the validity period required by the LC or by the destination country's regulation? Is it in the correct language?
8. Cross-check UN number and proper shipping name on the Dangerous Goods Declaration (DGD) against SDS Section 14. Confirm they match the goods description on the commercial invoice.
9. Verify issuing entity on each regulatory document matches what the LC specifies (beneficiary, seller, supplier, etc.).
10. Check dates: All regulatory certificates must be issued before the presentation date, must not be post-dated relative to the shipment date, and must be within any validity window specified in the LC.

Special Considerations: Hazardous Cargo and DG Declarations

For chemicals classified as dangerous goods under IMDG (sea), IATA DGR (air), or ADR/RID (road/rail), the Dangerous Goods Declaration (DGD) is frequently a required LC document. The DGD must comply with the applicable transport regulation's format requirements and must be signed by a certified dangerous goods signatory. From an LC perspective:

• The DGD proper shipping name and UN number must be consistent with SDS Section 14 and the commercial invoice description
• The shipper named on the DGD must be the LC beneficiary (or consistent with the shipper identified in the LC if specified)
• The DGD packing group and hazard class must match the GHS classification in SDS Section 2 — inconsistencies signal a documentation integrity problem
• The quantity on the DGD (gross weight per package, total net quantity) must reconcile with the commercial invoice and packing list

Some LCs for controlled substances (precursor chemicals, dual-use items) also require export authorization documents issued by the national export licensing authority. In the US, this is the Bureau of Industry and Security (BIS) Export Control Classification Number (ECCN) determination letter or an actual Export License (EAR99 designation letter) under 15 CFR Parts 730–774. If required by the LC, these documents must be current, applicable to the specific shipment, and identify the substance in a manner consistent with the invoice.