Corrosivesymbol

In addition to pictograms, labels are required to include a signal word (“danger” or “warning”), a brief hazard statement and a precautionary statement outlining ways to prevent exposure.

Irritantsymbol

Flame Over Circle: Identifies oxidizers. Oxidizers are chemicals that facilitate burning or make fires burn hotter and longer.

Exploding Bomb: Explosives, including organic peroxides and highly unstable material at risk of exploding even without exposure to air (self-reactives).

hazard symbols意思

Gas Cylinder: Gases stored under pressure, liquified gases, and dissolved gases; such as ammonia, liquid nitrogen, or acetylene.

Each pictogram covers a specific type of hazard and is designed to be immediately recognizable to anyone handling hazardous material.

Hazard symbols and meanings

The GHS system, part of OSHA's Hazard Communication Standard (HCS), consists of nine symbols, or pictograms, providing recognition of the hazards associated with certain substances. Use of eight of the nine are mandatory in the U.S., the exception being the environmental pictogram (see below).

As a result of updated OSHA chemical labeling requirements, 2016 marks the first full year of adoption of the Globally Harmonized System of Classification and Labeling of Chemicals (GHS) in the U.S.

Health Hazard: A cancer-causing agent (carcinogen) or substance with respiratory, reproductive or organ toxicity that causes damage over time (a chronic, or long-term, health hazard).

Hazard symbols

Skull and Crossbones: Substances, such as poisons and highly concentrated acids, which have an immediate and severe toxic effect (acute toxicity).

Flame: Flammable materials or substances liable to self ignite when exposed to water or air (pyrophoric), or which emit flammable gas.