Every chemical must be labeled with a proper Chemical Safety Signs as they possess inherent hazardous properties of toxication or explosion. Throughout life, every person comes in contact with various Chemicals everywhere.

Safety Signs are: “Information or instructions about health and safety on labels or on signboards with a specific color, an illuminated sign or acoustic signal.”


The Health and Safety Signs & Signals Regulations

  • Companies must provide and cater safety signs to employees where there is considerable risk to health and safety.
  •  Signs are self-descriptive, illuminated, and deliver safety messages at a glimpse.
  •  Specific colors, shapes, and symbols can appropriately convey information and alerts.
  •  Safety signs are independent of languages. Mostly universal graphical images are used.


There are two types of Chemical Safety Signs

  1. Signs for Hazard  Communication
  2. Informative Signs for Safety Instructions.






1) Sign One:

Property – Flammable Chemical

Potential Hazard/ Warning – Flame signals are slightly different according to the intensity of hazard.


flammable chemicals sign - KEN Institute

2) Sign Two: 

Property – Flammable Gases

Potential Hazard/ Warning – Able to ignite a combust

flammable gases sign - KEN Institute

3) Sign Three: 

Property – Flammable Liquid

Potential Hazard/ Warning – Can explode on reaction with some other chemicals.

flammable liquid sign - KEN Institute

4) Sign Four: 

Property – Chemicals Reactive to Water

Potential Hazard/ Warning – Emits toxic gases on reaction with water. 

Chemicals reactive to water sign - KEN Institute

5) Sign Five: 

Property – Self-reactive, Explosive, Flammable Solid

Potential Hazard/ Warning – Liabto ignite fire or explosion to 

flammable solid sign - KEN Institute

6) Sign Six: 

Property – Oxidizers, Pyrophoric in Nature

Potential Hazard/ Warning – Immediately ignite spontaneously on contact with air.

Oxidizers in Nature sign - KEN Institute

7) Sign Seven: 

Property – Organic Peroxides

Potential Hazard/ Warning – Highly reactive chemicals. They can trigger fire or explosion on reaction with other Chemicals or even on friction.

Organic Peroxides Sign - KEN Institute

8) Sign Eight: 

Property – Highly Hazardous Chemicals

Potential Hazard/ Warning – Liable to impulsive combustion. Burn or explode even on a little change in certain conditions of temperature and pressure.

Highly Hazardous Chemicals sign - KEN INSTITUTE



1) Cylinder:

Property – The cylinder is filled with compressed, liquified, or dissolved gas under pressure. Generally, the pressure is more than 28 pounds per sq. inch.

Potential Hazard/ Warning – Slight change in pressure can liable to explosion

cylinder Chemicals sign

2) Skull and Crossbones:

Property – Acute Toxic Chemical

Potential Hazard/ Warning – Exposure or Swallowing of a small amount of such chemical is lethal.

Skull and Crossbones sign

Property – Toxic Chemical 

Potential Hazard/ Warning – Inhalation of fumes of this chemical causes death. 

Skull and Crossbones inhalation hazard sign


3) Exclamation Mark

Property – Self-reactive Chemical

Potential Hazard/ Warning – Able to trigger catastrophic fire or explosion on a slight increase in temperature or pressure.

Exclamation mark sign

4) Corrosion: 

Property – Chemical oxidize metals and corrode them

Potential Hazard/ Warning – Cause damage to containers. There may leakage of chemicals responsible for skin burn and other hazards on contact.

Corrosion sign

5) Exploding Bomb: 

Property – Self-reactive Chemical

Potential Hazard/ Warning – able to trigger catastrophic fire or explosion on a slight increase in temperature or pressure.

exploding bomb sign

6) Irritant: 

Property – Health Hazardous.

Potential Hazard/ Warning – Cause irritation to skin and eyes, damage to organs, and narcotics effects on exposure.

irritant sign

7) Radioactive: 

Property – Clearly indicates that the chemical emits radiation.

Potential Hazard/ Warning – Radioactive radiation is carcinogenic and mutagenic for living organisms. 

radioactive sign

8) Miscellaneous Hazardous

Property – Uncertain Hazardous chemical

Potential Hazard/ Warning – Uncertain Hazardous Chemicals 

Miscellaneous Hazardous sign


1) Health Hazardous

Property – Severe Health Hazardous Chemicals

Potential Hazard/ Warning – Exposure to them is with the potential of acute hazards such as germ cell mutation, organ toxicity, carcinogenicity, and respiratory disorder.

Health Hazardous sign

2) Environment Hazardous

Property – Harmful to Ecological System

Potential Hazard/ Warning – Leakage of the chemical toxicate the aquatic bodies, air, and soil.

environmental hazard sign

3) Bio Hazardous

Property – Spread Infections

Potential Hazard/ Warning – Spread infectious diseases in living organisms on exposure or on contact. 

bio hazard sign


Besides these Chemical Safety Signs, the following mandatory signs are for individual safe practice.

mandatory sign


Every employer should install Chemical Safety Signs and labels at appropriate places and on containers. They should be proper combinations of shape, color, Symbol, or pictogram and with supportive text, if required. Signs must be easily perceptible by sufficient lighting. Ensure that every person using or handling the chemicals should aware of indications of signs.

Safety Signs play a vital role in sustaining a safe environment at work Places.

Respect them, Apply them!


In continuation to action join us for more details at info@keneducation.in

or visit our website www.keneducation.in or call

 on +917569034271


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  • Thank you for sharing information about chemical safety sign

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    • Thanks for the comment. We are glad that you felt it is useful.

  • Very good and important post regarding safety signs. The topic of the post is unique. Safety signs are not only for providing information but they also warn about dangers and safety measures to be taken.

  • Thank you for this reminder.

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