H351 — Suspected of causing cancer
The GHS hazard statement for carcinogenicity, category 2. Here is what it means, the label elements that travel with it, and the substances that carry it.
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 H351
When the engine writes SDS Section 2 or a container label for a product carrying H351, these are the P-codes it assigns, in the official Annex 3 groups:
Substances that carry H351
227 of the 4,228 substances in our database carry H351 when classified in pure form — recognizable examples:
Reference information, not legal or professional advice. Statement texts and allocations follow GHS Rev 9 / 29 CFR 1910.1200 Appendix C as implemented by our classification engine; the regulatory text and agency practice control. Claims last reviewed July 23, 2026.
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.