H300 — Fatal if swallowed
The GHS hazard statement for acute toxicity, oral, categories 1 and 2. Here is what it means, the label elements that travel with it, and the substances that carry it.
What it means
Serious harm — up to and including death — from swallowing a single dose or several doses within 24 hours. Categories 1 (most severe) onward are set from acute toxicity estimates (ATE) per GHS Chapter 3.1.
Precautionary statements paired with H300
When the engine writes SDS Section 2 or a container label for a product carrying H300, these are the P-codes it assigns, in the official Annex 3 groups:
Substances that carry H300
154 of the 4,228 substances in our database carry H300 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.