May 08, 2014

Hazchem Symbols Guide - Class 1 To Class 9 Explained

Class 1 Explosives

Symbol

Description

 Class 1 Explosive Examples 

 Explosive Label

An explosive is any chemical or item which is created to explode. An example would be a chemical reaction that would cause a dangerous explosive release of gas or heat.

Pyrotechnics

Fireworks

Dynamite

Gun Powder

Class 2 Gases

Symbol

Description

Class 2 Gases Examples

Flammable Gas Label

A hazardous chemical gas which can catch fire and burn.

Sub Class 2.1 Flammable Gas

Methane

Propane

Butane

Hydrogen

Non flammable compressed gas label

A compressed gas which is stored in a pressured container. Due to the high pressure of some containers, these gases can be very harmful if the container is damaged or if they are subject to a fire.

Sub Class 2.2 Non-Flammable Or Non-Poisonous Compressed Gas 

Oxygen

Aerosols

Carbon dioxide

Nitrogen

Toxic Gas Label

Toxic gases can be very lethal and poisonous to humans if there is a gas leak. In the event of a leak, the gases can spread quickly which can reduce the strength of poison but can still be very dangerous.

Sub Class 2.3 Poisonous Gas

Carbon monoxide

Chlorine

Methyl Bromide

Ammonia

Class 3 Flammable Liquids / Irritants

Symbol

Description

Class 3 Flammable Liquid / Irritants Examples

Flammable Liquid Label

Combustible liquids which can be very dangerous if ignited.

They can also be irritants if they come in contact with skin.

Petrol

Kerosene

Alcohol

Diesel

Class 4 Flammable Solids

Symbol

Description

Class 4 Flammable Solids Examples

Flammable Solids Label

Combustible materials that can become reactive if they are exposed to friction. Some materials can become thermally unstable and dangerous, even with low volumes of Oxygen present.

Sub Class: 4.1 Flammable Solids

Coal

Sulfur

Sodium Sulfide

Matches

Spontaneously Combustible

These are chemicals or items which can instantly combust and can become self-reactive materials if exposed to air, this can occur without any kind of heat being applied.

Sub Class: 4.2 Spontaneously Combustible

Phosphorus

Barium

Potassium sulfide

Sodium Sulfide

Dangerous when wet

These are chemicals or substances which become flammable or emit toxic gases when they come in contact with water.

Sub Class: 4.3 Dangerous When Wet

Calcium

Sodium

Magnesium

Lithium

Class 5 Oxidising Chemicals

Symbol

Description

Class 5 Oxidising Examples

Oxidising agent 5.1 label

Oxidising agents can greatly increase the combustion of other chemicals or materials. When the oxidising material or chemical is combined with oxygen, it can enhance the combustion of different materials. This means the material has been oxidised.

Sub Class: 5.1 Oxidising Agent

Chlorine Pool Chemicals

Peroxides

Nitrates

Sodium Super Oxides

Organic Peroxide 5.2 label

Organic peroxides are a type of oxidising chemical. They have a special sub class because these particular chemicals also have explosive properties under certain circumstances. If some organic peroxides are left out to dry, they become more dangerous over a certain time period.

Sub Class: 5.2 Organic Peroxide

Some Fertilizers 

Peroxides

Ethyl Hydro Peroxide

Acetyl Acetone Peroxide

Class 6 Poisonous Chemicals and Gases

Symbol

Description

Class 6 Poisonous Chemicals and Gases Examples

Poison Label

Poisonous chemicals pose serious health hazards if exposed to humans. If these chemicals are mishandled or swallowed, they have the potential to cause serious harm or even fatalities.

Sub Class: 6.1 Poisonous / Toxic Chemicals Or Substances

Mercury

Nicotine

Chloroform

Arsenic

Poison Gas Label Sub Class: 6.1 Same health hazards as above but these are poisonous and toxic gases.

 Tear Gas

Class 7 Radioactive Chemicals and Substances

Symbol

Description

Class 7 Radioactive Chemicals and Substances Examples

Radioactive i label

Class 7 radioactive materials are extremely dangerous and contain radionuclides which emit ionising radiation. Ionising radiation can potentially cause serious risks to human health.

Class Description: Radioactive 7 i

Uranium

Medical Isotopes

Thorium

Plutonium

Radioactive II label

 

Material in which radioactive material is distributed throughout & the average specific activity is: – ≤ 10 -4 A 2/gram for solids – ≤ 10 -5 A 2/gram for liquids.

Class Description: Radioactive 7 ii

Water with tritium concentration
Radioactive iii label

Radioactive solids which are either consolidated wastes or activated materials meeting the requirements for §173.468. Radioactive radiation which is distributed throughout a solid, collection of solid objects, or solid compact binding agent (concrete, ceramic, etc). Radioactive Material is relatively insoluble or intrinsically contained in a relatively insoluble material so leaching in water will not exceed 0.1 A 2 after 7 days. Must have an average specific activity of  ≤ 2 x 10 -3 A 2/g.

Class Description: Radioactive 7 iii

Radioactive solids

Class 8 Corrosive Chemicals

Symbol

Description

Class 8 Corrosive Chemicals Examples

Corrosive label

Corrosives are types of chemicals or substances that can corrode, disintegrate or even melt different materials when they come in contact. Some corrosive chemicals have the strength to corrode some types of metal such as steel or aluminium. Class 8 corrosive chemicals can cause severe damage to humans if mishandled.

Nitric Acid

Mercury

Batteries

Hydrochloric Acid

Class 9 Miscellaneous Goods

Symbol

Description

Class 9 Miscellaneous Goods Examples

Miscellaneous Class 9 Label

Class 9 Miscellaneous goods are chemicals or substances which are not covered by the above classes. Some miscellaneous chemicals can pose serious health and safety risks when they are transported.

Asbestos

Dry Ice

Polymeric Beads

First aid Kits 

Hazchem Labels / Stickers and Hazchem Signs

Available To Purchase

Hazchem Labels

Hazchem Signs

Hazchem Labels

Hazchem Signs

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