H303 · Hazard statementMay be harmful if swallowed
H303 is the GHS hazard statement “May be harmful if swallowed”. It is used for Acute toxicity, oral (chapter 3.1), Category 5. Not adopted in US OSHA, EU CLP and Canada. Mexico’s Spanish text is “Puede ser nocivo en caso de ingestión”. The UN GHS Rev.11 label matrix lists 1 precautionary statement for it (UN only).
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 UNMay be harmful if swallowed
UN GHS Rev.11, Annex 3, Table A3.1.2, PDF p. 304
US OSHA HCS
Not adoptedNo matching OSHA hazard class or category (not adopted by OSHA).
EU CLP
Not adoptedNot listed in EU CLP Annex III or IV.
Canada (EN)
Not adoptedAcute toxicity Category 5 is not adopted in the HPR.
Canada (FR)
Not adoptedAcute toxicity Category 5 is not adopted in the HPR.
Mexico (ES)
AdoptedPuede ser nocivo en caso de ingestión
Toxicidad aguda por ingestión · 5
NOM-018-STPS-2015, DOF 9 October 2015, Apéndice C, Tabla C.2, PDF p. 31
Hazard classes and categories
- Acute toxicity, oral (chapter 3.1) · Category 5
UN GHS Rev.11 Annex 3, sections 1 and 2
ESToxicidad aguda por ingestión · 5 (NOM-018-STPS-2015)
Change in UN GHS Rev.11
No change to the wording or the hazard classes in Annex 3 compared with Rev.10.
Sources
Each cell in the table names the official table and page for H303. 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.