GHS hazard class · Health hazards
Sensitization, Skin
A skin sensitizer is a substance that causes an allergic response after skin contact. Once a person is sensitized, later exposure, even to very small amounts, can cause a reaction such as a rash.
What it means
Repeated contact can cause an allergy that may be lifelong. Once someone is sensitized, small exposures can trigger symptoms.
What to do
Avoid skin contact and wear suitable gloves and protective clothing. Do not take contaminated work clothing home, wash it separately, and get medical attention if a rash develops.
This is general guidance for the class. Your product's safety data sheet takes precedence.
Categories and hazard statements
| Code | Category | Statement | Pictogram | Signal word |
|---|---|---|---|---|
| H317 | Category 1, 1A, 1B | May cause an allergic skin reaction | GHS07 | Warning |
Chemicals with sensitization, skin hazard codes
Chemicals in our database whose primary classification includes any current Sensitization, Skin code (H317).
11 chemicals in our database. Classification comes from each chemical's primary GHS source, so a supplier's SDS may differ.
Sensitization, Skin: frequently asked questions
What is the GHS hazard class "Sensitization, Skin"?
A skin sensitizer is a substance that causes an allergic response after skin contact. Once a person is sensitized, later exposure, even to very small amounts, can cause a reaction such as a rash.
Which hazard statements belong to Sensitization, Skin?
The current hazard statements for this class are H317.
Which pictograms and signal words are used for Sensitization, Skin?
Pictograms: GHS07 (Exclamation Mark). Signal word: Warning, depending on the category.
What should I do when working with a sensitization, skin hazard?
Avoid skin contact and wear suitable gloves and protective clothing. Do not take contaminated work clothing home, wash it separately, and get medical attention if a rash develops.
https://pubchem.ncbi.nlm.nih.gov/ghs/ghscode_10.txt (UN GHS Revision 10, retrieved 2026-10-12)