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GHS hazard statement

H313+H333: May be harmful in contact with skin or if inhaled

  • H313+H333
  • Health hazards
  • Combined statement
  • Warning

H313+H333 means “May be harmful in contact with skin or if inhaled”. It is a combined GHS hazard statement for Acute toxicity, dermal; acute toxicity, inhalation (Category 5) under the signal word “Warning”.

Hazard class and category

Hazard classCategoryPictogramSignal wordUN transport class
Acute toxicity, dermal; acute toxicity, inhalationCategory 5NoneWarning—

This combined statement merges H313 and H333.

What H313+H333 means

Acute toxicity covers harmful effects that occur after a single exposure, or several exposures within 24 hours, by swallowing (oral), skin contact (dermal) or breathing in (inhalation). The GHS has five categories, from Category 1 (most toxic) to Category 5, based on lethal-dose or lethal-concentration data.

The product can cause serious harm, and in the worst categories death, after one short exposure. Categories 1 to 3 carry the skull-and-crossbones pictogram, and Category 4 carries the exclamation mark.

What to do

Avoid all contact, breathing and swallowing. Use only with good ventilation or local exhaust, wear the gloves, protective clothing and respiratory protection the SDS calls for, do not eat, drink or smoke while working, wash thoroughly afterwards, and call a poison center or doctor if exposed.

This is general guidance for the hazard class. The safety data sheet for your product always takes precedence.

Chemicals carrying H313+H333

Chemicals listed here carry H313 or H333 (or the combined code itself) in their primary classification.

1 chemical in our database. Classification comes from each chemical's primary GHS source, so a supplier's SDS may differ.

H313+H333 frequently asked questions

What does H313+H333 mean?

H313+H333 means "May be harmful in contact with skin or if inhaled". It is a GHS hazard statement in the health hazards group, covering Acute toxicity, dermal; acute toxicity, inhalation (Category 5).

Which pictogram goes with H313+H333?

H313+H333 does not require a GHS pictogram in the data we compile.

What signal word goes with H313+H333?

The signal word for H313+H333 is "Warning".

Hazard statements describe the hazard of a classified substance or mixture. The classification of a specific product can differ, so use the supplier's SDS.

https://pubchem.ncbi.nlm.nih.gov/ghs/ghscode_10.txt (UN GHS Revision 10, retrieved 2026-10-12)