Does an ACGIH Skin Notation Affect GHS Classification? SDS Sections 8 and 11 Explained

If a solvent in your product carries an ACGIH “skin” notation, does that change how the product is classified under GHS — and where does that information belong on the SDS? This is a question we receive from EHS professionals reviewing safety data sheets, and it’s worth unraveling.

Quick Answer

No. An ACGIH skin notation does not factor into GHS classification. It can — and often should — be referenced under SDS Section 8 (Exposure Controls/Personal Protection) and Section 11 (Toxicological Information), but GHS does not prescribe specific wording for either section, and the information itself does not trigger a formal hazard classification.

The Question EHS Professionals Ask

A product contains a solvent that carries an ACGIH “skin” notation, signaling that dermal absorption contributes to the substance’s overall exposure risk. Two questions typically follow:

• Does GHS classification account for a product’s skin notation?
• Should it be referenced under Section 8 (Personal Protective Equipment) and Section 11 (Routes of Exposure)?

The intuition to look at Sections 8 and 11 is correct. Where the confusion usually comes in is assuming the notation itself triggers a classification.

Two Different Sources, One Shared Concern

ACGIH occupational exposure limits and their accompanying notations are a separate source of hazard information from the GHS classification criteria. A skin notation reflects ACGIH’s judgment that dermal absorption could contribute significantly to a worker’s overall exposure — including through contact with vapors, liquids, and solids — even when airborne exposure stays at or below the TLV. That’s a meaningful signal for industrial hygiene purposes, but it is not, on its own, one of the GHS classification criteria (acute toxicity, skin corrosion/irritation, STOT, and so on).

GHS also does not dictate specific wording for Sections 8 or 11. Content in those sections is guided by general principles in GHS Annex 4, but it isn’t templated — what appears will vary depending on the SDS author’s approach and the requirements of the jurisdiction for which the SDS is prepared.

What GHS Annex 4 Actually Says About Section 8 and Section 11

The distinction between prescribed Hazard and Precautionary Statements and content in Section 8 and 11 is grounded directly in Annex 4 of the UN GHS (“Purple Book”) — Guidance on the Preparation of Safety Data Sheets.

Section 8: Exposure Controls/Personal Protection

Covers occupational exposure limits, appropriate engineering controls, and individual protection measures (PPE) — including eye/face, skin, respiratory, and thermal protection — selected based on the hazard and potential for contact.

Section 11: Toxicological Information

Used primarily by medical professionals, occupational health and safety professionals, and toxicologists. It should provide a concise but complete description of toxicological effects, including information on the likely routes of exposure — ingestion, inhalation, or skin/eye contact.

Neither section’s GHS description specifies that a skin notation from ACGIH, or any other authority, must be transcribed using particular language or placed in a specific field. GHS defines the purpose and categories of information expected — not a fixed script.

Practical Guidance for SDS Authors and Reviewers

If an ingredient in your product carries a recognized skin absorption designation, here’s where it fits:

A few things worth keeping in mind:

• Placement isn’t mandated by GHS in a fixed format. Wording and prominence come down to authoring judgment and applicable competent authority (CA) requirements.
• A skin notation isn’t evidence of a formal hazard classification. Classification still flows from the GHS criteria and underlying test data, not from the existence of an ACGIH notation.
• Confirm jurisdiction-specific requirements. SDS content expectations vary by country and regulatory body, so what’s standard practice in one jurisdiction may not be expected in another.

Why the Distinction Matters

Conflating occupational exposure guidance information — like ACGIH TLVs and their notations — with GHS classification criteria can be a source of confusion in SDS authoring. Both care about the underlying hazard of dermal absorption contributing to systemic toxicity. But they operate on different criteria. Treating ACGIH data as informational rather than a direct classification trigger keeps SDS content accurate, instead of overstating what a skin notation formally requires.

How Chemscape Handles This in Practice

Cross-referencing every ingredient in a mixture against ACGIH’s current skin notation list — and then deciding how (and whether) to operationalize the information — is exactly the kind of detail that’s easy to miss during manual SDS review. Chemscape’s SmartChart applies this analysis to the SDS information our clients manage, surfacing skin absorption and other exposure-relevant indicators as a layer on top of the SDS rather than something pulled from the document itself. It’s a practical way to catch this kind of nuance across a large chemical inventory without relying on every reviewer to know where each notation system starts and stops.

Frequently Asked Questions

Does an ACGIH skin notation affect a product’s GHS hazard classification?

No. ACGIH skin notations are a separate piece of information and are not part of the GHS classification criteria. Classification is determined by GHS hazard criteria and underlying test data, not by ACGIH notations.

Where should skin absorption information appear on an SDS?

When known, skin absorption potential is commonly referenced in Section 8 (Exposure Controls/Personal Protection) for PPE guidance, and Section 11 (Toxicological Information) for routes of exposure. GHS does not require specific wording in either section.

Does GHS require specific language for SDS Sections 8 and 11?

No. GHS Annex 4 describes the purpose and general content expected in each section but does not have template language. Content will vary by author and by jurisdiction.

Sources

• Globally Harmonized System of Classification and Labelling of Chemicals (GHS) | UNECE
• Definitions and Notations | ACGIH
• Permissible Exposure Limits – Annotated Tables | OSHA