H311 · Hazard statementToxic in contact with skin

Hazard statementHealth

H311 is the GHS hazard statement “Toxic in contact with skin”. It is used for Acute toxicity, dermal (chapter 3.1), Category 3. The English wording is the same as UN GHS Rev.11 in US OSHA, EU CLP and Canada. Canada’s official French text is “Toxique par contact cutané” and Mexico’s Spanish text is “Tóxico en contacto con la piel”. The UN GHS Rev.11 label matrix lists 11 precautionary statements for it (UN only).

Maintained by Valenc. Data checked 2026-10-20.

Heading text: UN GHS Rev.11 Annex 3. Wording can differ by jurisdiction; see the table below.

Wording by jurisdiction

UN GHS Rev.11

Same as UN
GHS Rev.11 (2025), Annex 3

Toxic in contact with skin

UN GHS Rev.11, Annex 3, Table A3.1.2, PDF p. 304

US OSHA HCS

Same as UN
HCS 2024 · primarily GHS Rev.7, some Rev.8

Toxic in contact with skin

29 CFR 1910.1200 App. C, matched by wording

EU CLP

Same as UN
EU_CLP_2025 · consolidated 1 Jul 2026

Toxic in contact with skin.

EU CLP (Reg. (EC) No 1272/2008), Annex III, Part 1

Canada (EN)

Same as UN
WHMIS_2022 · GHS Rev.7 (Rev.8 for chemicals under pressure)

Toxic in contact with skin

GHS Rev.7 Annex 3 Table A3.1

Canada (FR)

Adopted
WHMIS_2022 · SGH Rév.7, texte officiel

Toxique par contact cutané

GHS Rev.7 Annex 3 Table A3.1

Mexico (ES)

Adopted
NOM-018-STPS-2015 · GHS 5th revised edition

Tóxico en contacto con la piel

Toxicidad aguda por vía cutánea · 3

NOM-018-STPS-2015, DOF 9 October 2015, Apéndice C, Tabla C.2, PDF p. 31

Hazard classes and categories

  • Acute toxicity, dermal (chapter 3.1) · Category 3

UN GHS Rev.11 Annex 3, sections 1 and 2

FRToxicité aiguë, cutanée (chapitre 3.1) · catégorie 3

ESToxicidad aguda por vía cutánea · 3 (NOM-018-STPS-2015)

Pictogram: Skull and crossbones (GHS06)

UN GHS Rev.11 Annex 3, section 3. Pictogram rules can differ by jurisdiction; see the GHS pictogram guide.

UN GHS Rev.11 only. EU CLP, US OSHA, Canada (GHS Rev.7) and Mexico assign different P statements; check the regulation for your market.

UN GHS Rev.11 Annex 3, section 3. Each table covers the categories named; a P statement may apply to only some of them. Many apply only under conditions; check the conditions for use before putting them on a label.

Related codes

H301+H311H301+H311+H331H311+H331H310H312H313

Change in UN GHS Rev.11

No change to the wording or the hazard classes in Annex 3 compared with Rev.10.

Notes

UN Rev.11 Annex 3 section 3 prints "H331 Toxic in contact with skin" (PDF p. 379, 380). That is the wording of H311, so those matrix rows are linked to H311.

Sources

Each cell in the table names the official table and page for H311. Full citations, links and revision notes for UN GHS Rev.11, US OSHA, EU CLP, Canada and Mexico: Sources and revision notes.

These are regulatory phrases for labels and safety data sheets. Check them against the official source for your jurisdiction before use.

Related reading: Why H and P statements shouldn't be copied from a supplier SDS · SDS Section 2 across HazCom, WHMIS, and CLP

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