H311 — Toxic in contact with skin
The GHS hazard statement for acute toxicity, dermal, category 3. Here is what it means, the label elements that travel with it, and the substances that carry it.
At a glance
| Official statement | Toxic in contact with skin. |
| Hazard class | Acute toxicity, dermal |
| Category | Category 3 |
| Signal word | Danger |
| Pictogram |  GHS06 — Skull and crossbones |
What it means
Serious harm from skin contact over a single short exposure. Categories are set from acute toxicity estimates (ATE) per GHS Chapter 3.1.
Precautionary statements paired with H311
When the engine writes SDS Section 2 or a container label for a product carrying H311, these are the P-codes it assigns, in the official Annex 3 groups:
| Prevention | P280 | Wear protective gloves/protective clothing/eye protection/face protection. |
| Response | P302 | IF ON SKIN: |
| P312 | Call a POISON CENTER or doctor if you feel unwell. | |
| P321 | Specific treatment (see supplemental first-aid instructions on this label). | |
| P361 | Take off immediately all contaminated clothing. | |
| P363 | Wash contaminated clothing before reuse. | |
| Storage | P405 | Store locked up. |
| Disposal | P501 | Dispose of contents/container in accordance with local/regional/national/international regulations. |
Substances that carry H311
4 of the 4,225 substances in our database carry H311 when classified in pure form — recognizable examples:
- Methanol — CAS 67-56-1
- allyl methacrylate — CAS 96-05-9
- di-n-butylamine — CAS 111-92-2
- triethylamine — CAS 121-44-8
The engine writes these for you.
When SDS HQ authors an SDS or a container label, it assigns the hazard statements, signal word, pictograms, and precautionary statements from these same tables — automatically, with the calculation shown.