GHS hazard statement
H303+H313: May be harmful if swallowed or in contact with skin
- H303+H313
- Health hazards
- Combined statement
- Warning
H303+H313 means “May be harmful if swallowed or in contact with skin”. It is a combined GHS hazard statement for Acute toxicity, oral; acute toxicity, dermal (Category 5) under the signal word “Warning”.
Hazard class and category
| Hazard class | Category | Pictogram | Signal word | UN transport class |
|---|---|---|---|---|
| Acute toxicity, oral; acute toxicity, dermal | Category 5 | None | Warning | — |
What H303+H313 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 H303+H313
Chemicals listed here carry H303 or H313 (or the combined code itself) in their primary classification.
No chemicals in our database are classified with H303+H313 yet.
H303+H313 frequently asked questions
What does H303+H313 mean?
H303+H313 means "May be harmful if swallowed or in contact with skin". It is a GHS hazard statement in the health hazards group, covering Acute toxicity, oral; acute toxicity, dermal (Category 5).
Which pictogram goes with H303+H313?
H303+H313 does not require a GHS pictogram in the data we compile.
What signal word goes with H303+H313?
The signal word for H303+H313 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)