SDS Section 14 and shipping papers don't match: which is wrong?

This guide uses the US Hazardous Materials Regulations (49 CFR Parts 171 to 180) and the IMDG Code and ICAO Technical Instructions they authorize. Road and rail rules in other regions, such as Europe or Asia, set their own documentation details. It does not replace the shipper's classification or a dangerous goods adviser's sign-off.

What does an SDS Section 14 and shipping paper mismatch look like?

An SDS Section 14 and shipping paper mismatch is any field of the transport description that differs between the two documents for the same product and shipment. OSHA's Appendix D lists what Section 14 holds: UN number, UN proper shipping name, transport hazard class, packing group, environmental hazards such as marine pollutant, transport in bulk and special precautions (OSHA, 29 CFR 1910.1200 Appendix D, 2026). The shipping paper carries the basic description of identification number, proper shipping name, hazard class and packing group, in that order (49 CFR 172.202, eCFR 2026).

Common forms of the mismatch:

1. Different UN numbers, for example a specific entry on the SDS and an n.o.s. entry on the shipping paper.

2. Same UN number but a different packing group.

3. The SDS says "not regulated" while the shipping paper carries a full hazmat description, or the reverse.

4. Missing technical name in parentheses after an n.o.s. name.

5. Marine pollutant marked on one document only.

6. Section 14 lists sea or air data only, and the shipment goes by road.

Each form points to a different cause, so record exactly which field differs before anyone edits either document. A field-by-field comparison is in the diagnostic table below.

What are the most likely causes of an SDS Section 14 mismatch?

The most likely causes of an SDS Section 14 mismatch are an outdated SDS revision, a transport mode the SDS was not written for, a classification error on one of the documents, and an SDS that belongs to a different product or formulation.

An outdated SDS revision

The SDS may predate a reformulation or a regulation change. OSHA gives the SDS preparer three months to add significant new hazard information (29 CFR 1910.1200(g)(5), eCFR 2026), and IMDG Code amendments follow a two-year cycle (IMO, IMDG Code page), so an SDS can trail the current rules. The direct fix for this cause is the subject of how to stop sending an outdated SDS or the wrong lot's CoA.

A different transport mode

The 49 CFR 172.101 table marks some entries "A" (regulated only by aircraft) or "W" (only by vessel), so a material can be regulated by air or sea and not by road (49 CFR 172.101(b), eCFR 2026).

A classification error

Either document can be wrong. PHMSA notes that an SDS "may or may not accurately reflect the appropriate hazardous materials information" (PHMSA, 2022).

The wrong product's SDS

A similar product name, an old grade or a sister formulation can put a UN number on the SDS that fits nothing on the shipping paper. Check the product code and revision date on both documents first.

Which fields should you compare between SDS Section 14 and the shipping papers?

Compare six fields between SDS Section 14 and the shipping papers: UN number, proper shipping name, hazard class, packing group, technical name for n.o.s. entries, and the transport mode each document covers. The table below decides which cause each difference points to; check each value against the 49 CFR 172.101 table for the mode of the shipment.

The key row is the technical name check: under 49 CFR 172.203(k), a proper shipping name marked "G" in column 1 needs the technical name in parentheses, as in "UN 1760, Corrosive liquid, n.o.s., (Octanoyl chloride), 8, II".

Run the comparison from the regulation outward, not from one document to the other. Take the UN number from each document to the 49 CFR 172.101 table and read the proper shipping name in column 2, the hazard class in column 3, the identification number in column 4 and the packing group in column 5, the columns 49 CFR 172.202 points to, plus any symbol in column 1. If both documents match a valid entry but different ones, the question is classification, not transcription, and it goes back to the product's test data and composition.

Which document governs a hazardous materials shipment, the SDS or the shipping paper?

For a US hazardous materials shipment, the shipping paper governs, because it carries the shipper's certification and the shipper is responsible for classification and description under 49 CFR 173.22. Section 173.22(a)(1) says the offeror "shall class and describe the hazardous material in accordance with parts 172 and 173" (49 CFR 173.22, eCFR 2026), and 49 CFR 172.204 requires the shipper to certify the description on the shipping paper.

The SDS is a reference, not the legal basis. In its letter Reference No. 22-0039 of 22 July 2022, PHMSA answered a freight forwarder that planned to build shipping descriptions from SDS Section 14. PHMSA wrote that an SDS "may be a useful reference document" but that the office "does not verify or certify transportation information in a SDS" (PHMSA, 2022). OSHA likewise lists Section 14 as non-mandatory and does not enforce sections 12 through 15 because they are outside its jurisdiction (29 CFR 1910.1200(g)(2), eCFR 2026).

Governing is not the same as correct. The shipping paper is the document that must be right, so a mismatch is resolved by checking the classification against the 172.101 table and test data, then fixing whichever document is wrong. Copying Section 14 onto the shipping paper, or the shipping paper into Section 14, only moves the error.

How do you fix each cause of an SDS Section 14 mismatch?

Fix each cause of an SDS Section 14 mismatch at its source: correct the shipping paper when the shipper's description is wrong, and ask the SDS author for a revision when Section 14 is wrong.

1. Outdated SDS: request the current revision and compare its Section 16 revision date with the formulation change or rule change. Hold the shipment until the description is settled.

2. Different mode: confirm the mode on the booking, then use the 172.101 entry for that mode, or the IMDG Code or ICAO Technical Instructions where 49 CFR 171.22 authorizes them under its conditions (49 CFR 171.22, eCFR 2026).

3. Classification error on the shipping paper: the shipper reclassifies under Part 173, corrects the description and re-signs the certification (49 CFR 173.22, eCFR 2026).

4. Classification error in Section 14: send the supplier the field, the value you believe is correct and the 172.101 entry or test data behind it, and ask for a revised SDS with a new revision date.

5. Wrong product's SDS: match product code, grade and revision date to the shipment, then repeat the field comparison.

Before reclassifying, read SDS Sections 2, 9 and 14 together; a flash point or composition change in Section 9 can be the reason a class or packing group moved. Do not open, sample or repack the material to check it without the SDS precautions and the packaging rules of 49 CFR Part 173.

Why can SDS Section 14 differ between road, sea and air transport?

SDS Section 14 can differ between road, sea and air transport because each mode runs under its own rule set, and the 49 CFR 172.101 table itself flags entries that apply only to some modes or regions. Column 1 symbol "A" means a material is regulated only by aircraft and "W" only by vessel, unless it is a hazardous substance or hazardous waste (49 CFR 172.101(b), eCFR 2026). Symbol "D" marks names suited to domestic transport that may be inappropriate internationally, and "I" marks names for international transport.

Marine pollutants add another mode effect. Under 49 CFR 171.4(c), except when transported by vessel, the marine pollutant requirements do not apply to non-bulk packagings carried by motor vehicle, rail car or aircraft, and packagings of 5 L or 5 kg or less are also excepted when they meet the general packaging requirements of 49 CFR 173.24 and 173.24a, unless the marine pollutant is a hazardous waste or a hazardous substance (49 CFR 171.4, eCFR 2026). A narrower case covers some oils: the words "Marine Pollutant" go with the basic description under 49 CFR 172.203(l), but except for transportation by vessel, some oils can be excepted when the description says the material is an oil (49 CFR 172.203(l), eCFR 2026). An SDS written for ocean freight can therefore show a marine pollutant flag that a road shipping paper legitimately omits.

The international codes also change on their own schedule. Amendment 42-24 to the IMDG Code, published in the 2024 Edition, came into force on 1 January 2026 and is mandatory from that date (IMO, IMDG Code publications page). A Section 14 written to an earlier amendment can differ from a description prepared to the current one, even when both were right on their own dates.

When should you call a specialist about an SDS Section 14 mismatch?

Call a dangerous goods specialist about an SDS Section 14 mismatch when the hazard class or packing group differs and you cannot trace it to a mode or revision difference, when the material is a mixture classed by test data, or when the shipment crosses modes or borders. In those cases the fix depends on classification criteria in 49 CFR Part 173 and on international code details that a field comparison cannot settle.

Also call one when the supplier refuses to revise Section 14 and you still believe it is wrong. The shipper carries the responsibility for the shipping paper (49 CFR 173.22, eCFR 2026), so a written record of why you departed from the SDS protects the shipment. Lubinpla's submission document check reads your own SDS, shipping papers and certificates side by side, tells a contradiction between documents apart from a missing or expired one, and drafts the correction request for your review.