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Hazard Symbols

The hazard symbols for chemicals are pictograms defined by the European community for labeling chemical packagings (for storage and workplace) and containers (for transportation). They are standardized currently by the CLP/GHS classification. Many countries require Hazard Symbols labeled on the containers of chemicals . These symbols have the following meanings:

Explosive-(E)

Explosive-(E)

Criteria: Chemical and preparations which may react exothermically with–out atmospheric oxygen, and which under define test conditions detonate, quickly deflagrate or explode upon heating wen partially confined.

Precaution: Avoid impact, knocks, friction, sparks, fire and heat.

Substances example: TNT, acetone peroxide, nitroglycerin, picric acid

Extremely Flammable (F+)

Extremely Flammable (F+)

Criteria: Chemical and preparations which may react exothermically with–out atmospheric oxygen, and which under define test conditions detonate, quickly deflagrate or explode upon heating wen partially confined.

Precaution: Keep away from naked flames, sparks and source of heat.

Substances examples: Hydrogen, acetylene, propane, butane, diethyl ether, carbon disulfide, ethanal

highly Flammable (F)

highly Flammable (F)

Criteria: Liquids with a flash point below 21oc that are not extremely flammable. Solid substances and preparations which on brief exposure to a source of ignition may be easily inflamed and then continue to burn or smoulder.

Precaution: Keep away from naked flames, sparks and sources of heat.

Substances examples: Ethanol, acetone, gasoline, hexamine, methanol.

Oxidizing (O)

Oxidizing (O)

Criteria: Organic peroxides which are combustible even if not in contact with combustible materials. Other substances and preparations with as a rule are not combustible themselves, but which in contact with combustible materials, mainly through oxygen evolution, considerably increase the fire hazard and the intensity of a fire.

Precaution: Avoid all contact with combustible substances.

Risk of ignition: the substance promotes fire once started and impedes fire fighting.

Substances examples: Oxygen, potassium nitrate, hydrogen peroxide, nitric acid, potassium permanganate.

Toxic (T)

Toxic (T)

Criteria: Inhalation, swallowing or absorption through the skin in small amounts can cause considerable damage to health, and may sometimes be lethal. In the event of serious evidence of severe, possibly irreversible damage to health by single, repeated or prolonged absorption, especially carcinogenic, mutagenic and reproduction-toxic effects.

Precaution: All contact with the human body must be avoided If you fell unwell, seek medical advice immediately. Particular attention is drawn to the carcinogenic, teratogenic or mutagenic risks associated with certain substances. Observe special regulations when handing these substances.

Substances examples: Sulfuric acid, TNT, Nitroglycerin, carbon disulfide, methanol, ammonia, methanal.

Very toxic (T+)

Very toxic (T+)

Criteria: Inhalation, swallowing or absorption through the skin in very small amounts can cause considerable damage to health, and may sometimes be lethal. In the event of serious evidence of severe, possibly irreversible damage to health by single, repeated or prolonged absorption.

Precaution: All contact with the human body must be avoided. If you fell unwell, seek medical advice immediately!

Substances examples: Prussic acid, nicotine, carbon monoxide, white phosphorus

Harmful (Xn)

Harmful (Xn)

Criteria: Inhalation, swallowing or absorption through the skin can cause acute or chronic damage to health. In the event of evidence of severe, possibly irreversible damage to health by single, repeated or prolong absorption, especially in suspected carcinogenic, mutagenic and reproduction toxic effects. Risk of sensitization by inhalation (classified R 42).

Precaution: All contact with the human body must be avoided. Particular attention is drawn to substances which are suspected to have a carcinogenic, mutagenic or reproduction-toxic effects.

Substances examples: Hexamine, butane, naphtha, ethanal

Irritant (Xi)

Irritant (Xi)

Criteria: Without being corrosive, immediate, prolong or repeated contact with skin or mucous membranes may cause inflammations. Risk of sensitization by skin contact (If classified R43).

Precaution: Avoid contact with eyes and skin, do not inhale Valeurs.

Substances examples: Sodium hypochlorite, acetone, ethanol.

Corrosive (C)

Corrosive (C)

Criteria: Total damage to living tissues or when this result can be predicted.

Precaution: Take special measures to protect eyes, skin and clothes.

Do not inhale vapours! In case of accident or if you fell unwell seek medical advice immediately!

Substances examples: Sulfuric acid, Nitric acid, sodium hydroxide, ammonia, White phosphorus.

Dangerous for the environment (N)

Dangerous for the environment (N)

Criteria: Liberation into aquatic and non-aquatic environments would present or may present immediate or delayed damage for once or more components of the environment may lead to immediate or delay damage of the ecological system through alteration of the natural balance. Some substances or their degradation product s may simultaneously affect different environmental compartments.

Precaution: Depending on the risk potential do not allow to enter sewerage systems, soil or environment. Observe special disposal regulation!

Substances example: Sulfuric acid, turpentine, lead, mercury.

Hazard Symbols PDF Download

Reference

1.http://en.wikipedia.org/wiki/European_hazard_symbols