GHS Labeling Requirements: What Must Appear on a Chemical Label

A GHS chemical label is the label that tells anyone handling a hazardous substance what the danger is and how to avoid it. Under the UN's Globally Harmonized System (GHS), every container of a classified chemical must carry six core elements: the product identifier, the supplier's identity, a signal word, one or more hazard pictograms, hazard statements and precautionary statements. In the United States this is enforced through OSHA's Hazard Communication Standard (HazCom 2012, 29 CFR 1910.1200); in the EU the same UN building blocks are written into the CLP Regulation (EC) No 1272/2008.

If you buy, blend, repack or export chemicals, the label is not decoration — it is the document that keeps your shipment compliant at customs and your warehouse compliant with inspectors. Whether you order standard chemical labels or custom chemical labels printed to your own artwork, the same six elements apply, and hazardous chemical labels are checked against them at the point of inspection. This guide breaks down what has to appear on the label, how the US and EU versions differ, how big the label must be, and which materials survive the chemicals they are stuck to.

What Must Appear on a GHS-Compliant Chemical Label?

Every GHS-compliant chemical label carries the same six elements, whether the product is sold in Ohio or in Rotterdam. What changes between jurisdictions is the wording and the enforcement, not the structure.

One element that is not required on the shipped label is the full text of the SDS — the SDS travels separately, and the label only has to tell the user that an SDS exists and who to ask. Where the label is tight on space, GHS allows supplementary information to sit on a folded or multi-layer label rather than being dropped, which is why extended-content constructions are common on small chemical packs. You can see how those work in our guide to custom multi layer labels.

Need a chemical label that survives both a solvent spill and a customs inspection? Send us your chemical list and container sizes and we will quote the face stock, adhesive and laminate for each one.

What Are the Nine GHS Pictograms and When Do They Apply?

GHS uses a fixed set of nine hazard pictograms. A GHS pictogram label carries only the ones that match the hazard class of that specific product — not all nine, and never a pictogram that does not apply.

Two practical printing notes. First, the pictograms must be printed in colour — a black-and-white photocopy of a hazard diamond is not a compliant label, because the red border carries meaning. Second, the diamond must keep its proportions; stretching a pictogram to fill an awkward space is a common cause of rejected artwork at customs.

How Do OSHA HazCom 2012 and EU CLP Differ?

Both systems are built on the same UN GHS text, so a label designed for one market is usually 80% reusable in the other. The differences are concentrated in a handful of places, and they are exactly the places that trigger rework if you only print one version. If you are working to the OSHA HazCom label requirements in one market and the CLP labeling requirements in another, settle those differences before the artwork is signed off.

The UFI — Unique Formula Identifier — is the element most often missed by exporters who are used to the US template. Since 2021 the UFI has been mandatory on EU labels for mixtures classified as hazardous and supplied to consumers, and since 2025 for professional use as well. If your artwork was signed off before that, it needs a second look.

For a multi-market SKU the practical answer is usually a single label with a bilingual panel, or two language versions printed on the same roll. We print both on customised labels so one order covers both regions.

What Changes for Secondary Containers and Workplace Decanting?

The label on the drum from your supplier is only half the story. The moment a worker pours solvent into a smaller bottle, a new container exists — and that container has its own labelling obligations.

Under OSHA, a portable container that is filled from a labelled container is exempt from labelling only if all three of the following are true: the material is used immediately by the person who transferred it, it is used within the same work shift, and it stays in the exclusive control of that person. Break any one condition and the container needs a full GHS label. Many sites get caught by the second condition when a shift ends with product still in the bottle.

In practice, most plants solve this with pre-printed secondary container labels — small, tough, chemical-resistant labels that can be written on or filled in for whatever is decanted. Blank lined versions are the most flexible, because the person doing the decanting can record the product name and the H-statement by hand. The same idea applies to folding tags used on sample bottles and drum returns.

What About Transport and Dangerous Goods Labels?

GHS labels and transport labels are two different systems, and a chemical shipment usually needs both. GHS covers the hazard information a handler needs; transport regulations cover how the package may travel.

• Road, rail and sea movement is governed by the UN Model Regulations, implemented in the US through 49 CFR and in Europe through ADR/RID, and internationally through the IMDG Code.
• Air freight follows the IATA Dangerous Goods Regulations, which are stricter on packaging than road or sea.
• Transport labels are diamond-shaped, carry a UN class number and are sized by the package dimensions rather than by the GHS rules.

Because the two label sets use different sizing logic, they are normally printed as separate items: the GHS label on the inner pack, the transport label on the outer case. Where the outer case must also show the GHS information, an extended-content or booklet construction keeps both readable without shrinking either one to an unreadable size.

How Big Must a Chemical Label Be?

OSHA does not prescribe a fixed label size — it requires the information to be readable. The EU does prescribe minimum dimensions, scaled to the volume of the container. If you sell into Europe, these are the numbers to design to.

For very small packs the regulation allows a reduced set of information, but the product identifier, the pictograms and the supplier's phone number are never dropped. If your container is genuinely too small for the required text, the compliant route is a folded or peel-and-reveal label rather than smaller type — a 5 pt hazard statement is not considered readable by any inspector.

Which Materials and Adhesives Survive Chemical Exposure?

A GHS label that fades, lifts or bleeds into the product is worse than no label at all, because it looks compliant while hiding the hazard. The face stock, the adhesive and the laminate each have to match the chemical being packed.

• Face stock. Coated paper is fine for dry or water-based products, but solvents, oils and aggressive surfactants need a film face — BOPP, PET or PVC.
• Adhesive. Rubber-based adhesives are the usual choice for high initial tack on HDPE and PP drums; acrylic adhesives resist UV and ageing better on metal and glass.
• Laminate. An overlaminate is what keeps the print from being wiped away by a solvent spill or a hose-down. For outdoor or wash-down environments a gloss or matte film laminate is standard.
• Low-surface-energy plastics. HDPE and PP drums are the classic problem — many adhesives bead off them. Chemical drum labels on HDPE or PP therefore need a dedicated low-surface-energy adhesive, not a general-purpose one.

Material selection for labels follows the same logic we set out in our guide to choosing the right label material for product packaging. Tell us what is inside the container and we will match the construction to it rather than the other way round.

Common GHS Labelling Mistakes That Trigger Rejections

Frequently Asked Questions

Does every chemical container need a GHS label?

Any container of a classified hazardous chemical in the workplace needs one, with the narrow exception of a portable container used immediately, within the same shift, by the person who filled it. Consumer packages follow the same GHS elements but are enforced through consumer product rules rather than workplace rules.

Can the SDS information be printed on the label instead of a separate sheet?

No. The label and the safety data sheet are two separate obligations. The label must tell the user that an SDS is available and how to get it; the SDS itself is supplied separately and must not be compressed into the label.

Do I need a different label for each export market?

Not always. The core GHS elements are shared, so the differences usually come down to language, the UFI requirement in the EU and the tactile warning triangle. Many exporters solve this with a bilingual label or two language variants printed on one roll.

How long does a chemical label need to stay legible?

For as long as the container holds the product and remains in service. That is a materials question, not a wording one — a film face stock with a protective laminate is what keeps the print readable through spills, sunlight and wash-downs.

Where can I find the current GHS labeling requirements?

The GHS labeling requirements are set out in the UN's Purple Book, implemented in the United States through OSHA's Hazard Communication Standard and in the EU through the CLP Regulation. Both are revised periodically, so check the revision in force before finalising artwork for a new market.

Conclusion

A compliant chemical label comes down to six elements, nine possible pictograms, and a material choice that survives whatever is in the container. Get the wording right for each market, size the label to the pack, and match the construction to the chemical — and the label stops being a compliance risk and starts being a reason buyers trust your product.

As a chemical label manufacturer and chemical label supplier we print GHS, CLP and transport labels on film stocks with chemical-resistant adhesives and laminates, in roll or sheet form. Tell us your chemical list and container sizes and we will confirm the right construction for each one within 24 hours.