These include acetone, ethyl ether, acetylene and cyclohexane. Flammability may be the single most hazardous characteristic, causing more injuries and damage than any of the other properties in the diamond.

The number corresponds to the level of danger a chemical poses. The lower the number, the lower the hazard. The numbers range from zero to four, with zero representing no hazard at all, and four representing an extreme hazard. Each number also has a specific meaning based on which diamond it is in.

special precautions

The nine hazard classes are as follows:

• Class 1: Explosives.
• Class 2: Gases.
• Class 3: Flammable and Combustible Liquids.
• Class 4: Flammable Solids.
• Class 5: Oxidizing Substances, Organic Peroxides.
• Class 6: Toxic Substances and Infectious Substances.
• Class 7: Radioactive Materials.
• Class 8: Corrosives.

The color bar is not for emergencies and is used to convey broader health warning information. The four bars are color coded, using the modern color bar symbols with blue indicating the level of health hazard, red for flammability, orange for a physical hazard, and white for Personal Protection.

Hazard pictograms (symbols)

• Explosive (Symbol: exploding bomb)
• Flammable (Symbol: flame)
• Oxidising (Symbol: flame over circle)
• Corrosive (Symbol: corrosion)
• Acute toxicity (Symbol: skull and crossbones)
• Hazardous to the environment (Symbol: environment)

Physical Hazards

Hazard symbols or warning symbols are recognisable symbols designed to warn about hazardous or dangerous materials, locations, or objects, including electric currents, poisons, and radioactivity. The use of hazard symbols is often regulated by law and directed by standards organizations.

Orange or red. Square or diamond. They are hazard symbols given to chemicals and substances that are hazardous to health….Flammable

• Extremely flammable gas.
• Flammable gas.
• Extremely flammable aerosol.
• Flammable aerosol.
• Highly flammable liquid and vapour.
• Flammable liquid and vapour.
• Flammable solid .

Most warning signs are yellow and diamond-shaped with black letters or symbols. Some common warning signs are shown on the next slides. This sign warns you that the road ends ahead. Slow down and prepare to safely turn left or right.

Explosive Signs and Labels Identify where a blast might occur and where substances that might cause them are stored or used.

The presence of this symbol (a magenta or black propeller on a yellow background) on a sign denotes the need for caution to avoid contamination with or undue exposure to atomic radiation. The wording on the sign varies with the level of potential radiation in the area.

TNT is an example of a relatively powerful explosive that is oxygen deficient. Some explosives are mixtures of chemicals that do not react and are known as composites….

explosion hazard: chemicals which have a. mass explosion hazard but are so insensitive. that there is very little probability of initiation or. of transition from burning to detonation under. normal conditions.

The aim of this guide is to help you understand the different categories of hazards, so you can confidently identify them in your workplace.

• Biological Hazards.
• Chemical Hazards.
• Physical Hazards.
• Safety Hazards.
• Ergonomic Hazards.
• Psychosocial Hazards.

An explosion is a sudden and rapid increase in volume and release of energy in an extreme manner. This is usually accompanied by the generation of high temperatures and release of gases caused by changes in pressure, temperature and phase. In mining, explosives are the most obvious form of explosion hazard.

A toxic hazard may be defined as any substance which has the ability to cause harm or damage to living organisms.

Health hazards are chemical, physical or biological factors in our environment that can have negative impacts on our short- or long-term health. Exposure can occur through touch, inhalation, and ingestion. Understanding the risks of these hazards can help us to take action to avoid or mitigate these risks.

People are generally concerned about chemicals like polychlorinated biphenyls (PCBs) and dioxin which can be found at some hazardous waste sites. Products that we use daily, such as household cleaners, prescription and over-the-counter drugs, gasoline, alcohol, pesticides, fuel oil and cosmetics, can also be toxic.