GHS REFERENCE / H-CODES / H224

H224 — Extremely flammable liquid and vapor

The GHS hazard statement for flammable liquids, 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	Extremely flammable liquid and vapor.
Hazard class	Flammable liquids
Category	Category 1
Signal word	Danger
Pictogram	GHS02 — Flame
Criteria	Flash point below 73.4 °F (23 °C) and initial boiling point at or below 95 °F (35 °C) — GHS Table 2.6.1.

What it means

Liquids whose vapor ignites readily. Categories run from 1 (most flammable) down to 4, set by flash point — the lowest temperature at which the liquid gives off ignitable vapor — together with initial boiling point.

Precautionary statements paired with H224

When the engine writes SDS Section 2 or a container label for a product carrying H224, these are the P-codes it assigns, in the official Annex 3 groups:

Prevention	P210	Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
	P233	Keep container tightly closed.
	P240	Ground and bond container and receiving equipment.
	P241	Use explosion-proof electrical, ventilating, lighting equipment.
	P242	Use non-sparking tools.
	P243	Take action to prevent static discharges.
	P280	Wear protective gloves/protective clothing/eye protection/face protection.
Response	P370	In case of fire:
Storage	P403	Store in a well-ventilated place.
Disposal	P501	Dispose of contents/container in accordance with local/regional/national/international regulations.

Substances that carry H224

14 of the 4,225 substances in our database carry H224 when classified in pure form — recognizable examples:

di-methylamine — CAS 124-40-3
ethanal — CAS 75-07-0
ethanethiol — CAS 75-08-1
ether — CAS 60-29-7

Same hazard class: H225 · H226 · H227

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.

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