The skull-and-crossbones GHS pictogram, widely known as the toxic symbol, represents chemicals with the highest levels of acute toxicity. That means these chemicals have an immediate and severe (even lethal) effect on human health.

There are thousands of hazardous chemicals used and transported for commercial purposes. The GHS standard streamlines all this information by grouping chemicals into classes. There are 29 GHS hazard classes that describe the hazard type and sometimes a chemical's current state (liquid, solid, or gas).

When you see this symbol, disposal of the substance may require a specific method. You also need to take precautions against release into the environment during use or transportation.

Hazardsymbol

Containers with this hazard symbol may explode if heated. It's best not to even touch these containers until you know more because some require special handling precautions.

The explosive pictogram means you need more information before you come anywhere near that container. Different chemicals can be set off under different conditions, including friction or mechanical shock – even bumping these containers with another object may be dangerous.

Warning signs alert you to conditions ahead. These signs are usually diamond-shaped and warn you about road hazards, construction sites, schools or other situations that require your special attention. While most warning signs are yellow, some Illinois communities may have fluorescent yellow-green pedestrian and school signs. Construction and maintenance warning signs are orange.

Toxicsymbol

GHS pictograms are designed to draw your attention to a certain type of risk. They provide important, instantly recognizable information, but you may notice that some very different hazards get grouped together below.

OSHA requires HazCom training for workers who will be exposed to hazardous chemicals under normal working conditions. They need to learn what the pictograms mean, where to find important label information, what you can learn from a Safety Data Sheet, and the properties of chemicals in the hazard classes they're likely to encounter.

Healthhazardsymbol

Hazard classes are broken down into three main types: physical hazards (17 classes), health hazards (10 classes), and environmental hazards (2 classes).

Corrosive symbol

GHS pictograms are just one aspect of OSHA's Hazard Communication Standard. Hazardous symbols and their meanings can't keep you safe by themselves. You need complete GHS labels, Safety Data Sheets, HazCom training, and more.

All of the health hazard symbols mean you need to keep containers tightly closed until you've read more information and taken the recommended precautions.

Other parts of standardized GHS container labels provide information that's immediately useful to someone handling a chemical. That includes signal words, hazard statements (like Fatal if Swallowed), and recommended safety measures for prevention, response, storage, and disposal. Safety Data Sheets are even more detailed, with sections that provide instructions during an emergency.

Multiple hazard pictograms can appear on a label when they apply. GHS pictograms may also be used on hazard signs to encourage caution in a specific storage or work area.

Depending on the chemical, exposure may occur by inhaling, ingesting, or making skin contact with the substance. You'll find the particular exposure route(s) elsewhere on the label.

Since there are only 9 GHS pictograms for 29 classes, not every hazard class has its own symbol. Instead, the GHS pictograms represent multiple hazard classes with a similar type and level of risk.

A driver must always obey the posted work zone speed limit. Standard speed limits may be reduced due to the presence of workers or because normal driving conditions do not exist in a work zone. There may be narrow lanes, drop-offs between lanes or at the edge of pavement, lane closures, or construction equipment or obstructions near open lanes of traffic. The speed limit may be further reduced when workers are present.

The environmental hazard GHS pictogram indicates that a chemical is toxic to aquatic wildlife. This is the only GHS symbol that's not mandatory.

There are seven basic shapes of signs, each with a special purpose. Other shapes may be used for special purposes. For example, various shields may be used as route markers, while two crossed panels may be found at railroad crossings.

These systems exist to ensure that people recognize any hazardous chemicals in their workplace, understand the dangers they face, and know the precautions they need to take.

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The oxidizing GHS pictogram is used for oxidizing solids, liquids, and gases. These chemical classes, when exposed to oxygen, help ignite substances that wouldn't otherwise combust and/or make fires burn hotter and longer.

There are five GHS symbols used to warn about physical hazards, which are characteristics that can put both property and human safety at risk.

hazardsymbols意思

The flammable GHS pictogram is used on chemicals that emit flammable gas or could self-ignite when exposed to water or air.

That's because hazard symbols never stand alone. They're just one part of a standardized GHS label that provides more details about how to safely handle each substance.

Hazardsymbols and meanings

There are eight basic colors on signs, each of which has a special meaning. It is important that you memorize the meanings of the colors.

The GHS pictogram with an exclamation mark is used on substances that are harmful or irritating. The health effects are acute (set in quickly), but they're less severe than something marked with the toxic symbol.

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This pictogram means you should leave the container tightly closed and away from any sources of heat until you know more. You also need to be careful about changing any storage conditions, including what other substances or materials get placed near these containers.

The reduced speed in work zones is for the safety of both motorists and workers. Slower speeds give drivers more time to safely negotiate work zones. About 85 percent of work zone fatalities are motorists.

As an international standard, GHS uses hazard symbols to convey information without relying on a specific language. Let's look at these hazard pictograms' meanings.

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Like the flammable symbol, this pictogram also means you should leave the container tightly sealed until you know more. Don't change storage conditions or put other materials near these containers until you know what's safe.

In 2012, OSHA revised its Hazard Communication Standard (HCS) to be compatible with the United Nations' Globally Harmonized System of Classification and Labeling of Chemicals (GHS).

The GHS label will specify which materials or exposure routes can be corroded by a substance. Like all health hazard symbols, you should leave the container tightly sealed until you know more. Also, you'll need to consider the types of tools or containers you can safely use.