H350 — May cause cancer
The GHS hazard statement for carcinogenicity, category 1 (1a, 1b). Here is what it means, the label elements that travel with it, and the substances that carry it.
At a glance
| Official statement | May cause cancer. |
| Hazard class | Carcinogenicity |
| Category | Category 1 (1A, 1B) |
| Signal word | Danger |
| Pictogram |  GHS08 — Health hazard |
What it means
May cause cancer (Category 1: known or presumed human carcinogen; Category 2: suspected). The category reflects strength of evidence, not potency.
Precautionary statements paired with H350
When the engine writes SDS Section 2 or a container label for a product carrying H350, these are the P-codes it assigns, in the official Annex 3 groups:
| Prevention | P201 | Obtain special instructions before use. |
| P202 | Do not handle until all safety precautions have been read and understood. | |
| P280 | Wear protective gloves/protective clothing/eye protection/face protection. | |
| Response | P308 | IF exposed or concerned: |
| P313 | Get medical advice/attention. | |
| Storage | P405 | Store locked up. |
| Disposal | P501 | Dispose of contents/container in accordance with local/regional/national/international regulations. |
Substances that carry H350
1,026 of the 4,225 substances in our database carry H350 when classified in pure form — recognizable examples:
- formaldehyde — CAS 50-00-0
- benzene — CAS 71-43-2
- (2-chloroethyl)(3-hydroxypropyl)ammonium chloride — CAS 40722-80-3
- (2-ethylhexanoato-O)(isodecanoato-O)nickel — CAS 84852-39-1
Same hazard class: H351
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.