H290 — May be corrosive to metals

The GHS hazard statement for corrosive to metals, category 1. Here is what it means, the label elements that travel with it, and the substances that carry it.

AT A GLANCE · OFFICIAL STATEMENT
“May be corrosive to metals.”
HAZARD CLASS
Corrosive to metals
CATEGORY
Category 1
SIGNAL WORD
Warning

What it means

Chemicals that visibly corrode steel or aluminum in standard testing. This is a storage-and-container hazard — it says nothing by itself about effects on skin.

Precautionary statements paired with H290

When the engine writes SDS Section 2 for a product carrying H290, these are the precautionary statements it assigns, with combined statements written as one line:

Substances that carry H290

4 of the 4,228 substances in our database carry H290 when classified in pure form — recognizable examples:

formic acid
CAS 64-18-6
hydroxylamine [≤ 55% in aqueous solution]
CAS 7803-49-8
hydroxylamine sulfate (2:1)
CAS 10039-54-0
hydroxylammonium chloride
CAS 5470-11-1

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.