H340 — May cause genetic defects
The GHS hazard statement for germ cell mutagenicity, category 1 (1a, 1b). Here is what it means, the label elements that travel with it, and the substances that carry it.
What it means
May cause heritable genetic damage — mutations in germ cells that can be passed to offspring (Category 1: known or presumed; Category 2: suspected).
Precautionary statements paired with H340
When the engine writes SDS Section 2 for a product carrying H340, these are the precautionary statements it assigns, with combined statements written as one line:
Substances that carry H340
427 of the 4,228 substances in our database carry H340 when classified in pure form — recognizable examples:
Reference information, not legal or professional advice. Statement texts and allocations follow 29 CFR 1910.1200 Appendix C (the GHS as adopted by OSHA HazCom 2024) 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, it assigns the hazard statements, signal word, pictograms, and precautionary statements from these same tables — automatically, with the calculation shown.