H335May cause respiratory irritation

The GHS hazard statement for specific target organ toxicity, single exposure, category 3 (respiratory tract irritation). 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 respiratory irritation.
HAZARD CLASS
Specific target organ toxicity, single exposure
CATEGORY
Category 3 (respiratory tract irritation)
SIGNAL WORD
Warning

What it means

Effects on a specific organ or body system from a single exposure. Categories 1 and 2 cover significant organ damage (proven or presumed vs. suspected); Category 3 covers transient effects — airway irritation or drowsiness/dizziness — that pass after exposure ends.

Precautionary statements paired with H335

When the engine writes SDS Section 2 or a container label for a product carrying H335, these are the P-codes it assigns, in the official Annex 3 groups:

Substances that carry H335

308 of the 4,228 substances in our database carry H335 when classified in pure form — recognizable examples:

hydrogen peroxide solution
CAS 7722-84-1
Hydrochloric acid
CAS 7647-01-0
formaldehyde
CAS 50-00-0
glutaral
CAS 111-30-8
SAME HAZARD CLASS:H336H370H371

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.