The journey of chemistry is 
long overdue.People have using 
chemistry for better life.you know
chemistry is inextricably linked
with our lives.
We can understand that if we
notice a little and look around.
Just as chemistry has given us many 
advantages, it also has many
disadvantages.Let's just talk about
this before entering the world of
chemistry. 

As i am a university student and studying chemistry so i thought i should write about chemistry and i am a bit expert in it.we will start with some signs of chemistry used for chemicals to indicate their identity.

Before using any chemical, we need to know the nature of the chemical. Is it explosive or combustible or radioactive? A symbol is used on the label of a chemical bottle or container to indicate that. A conference on environment and development was held at the initiative of the United Nations with a view to introducing a Globally Harmonized System. In this conference, universal symbols were determined to indicate the risks and levels of risk of various substances.

There are symbols which explains about a chemical. These are Explosive substance, Flammable substance, Toxic substance, Irritant substance, Health risk substance, Radioactive substance, Dangerous for environment, Corrosive.

Let's explain risks, levels of risk and precautions of tokenized substances one by one.

Explosive substance

Be very careful with this marked substance. The use of these substances should be kept in mind that in case of injury or fire, these substances can cause severe explosions, which can cause serious damage to the body and the laboratory. So these products have to be handled very carefully. TNT, organic peroxide, nitroglycerin etc. are such explosives. So be careful!

Flammable substance

Alcohol, ether etc. are flammable substances. These substances can catch fire quickly. So they should be kept away from fire or heat all the time. Keep it in mind!

Toxic substance

This marked substance is toxic in nature. So if it enters the body or enters the body through breathing, various types of damage can be done to the body. Such substances as benzene, chlorobenzene, methanol. Aprons, hand gloves, safety goggles etc. should be used while using such materials.

Irritant substance

Stimulants like cement dust, mild acid, alkali, nitrous oxide etc. damage the skin, eyes, respiratory system etc. So when using such materials, aprons, hand gloves, safety goggles should be used.Remember that.

Health risk substance

Such substances can cause short-term or long-term damage to the body if inhaled or inhaled. If they enter the body, they can cause serious diseases like cancer or damage to the respiratory system. Examples of such substances are benzene, toluene, xylene, etc.So you have to keep them alert and wear aprons, hand gloves, safety goggles later.

Radioactive substance

Harmful rays are emitted from these substances which can cause death like cancer or cripple one. Therefore, special care needs to be taken while using these substances. Such as uranium, radium, etc. radioactive substances.

Dangerous for environment

These marked substances are harmful to the environment. That is, it is dangerous for both plants and animals. Examples of such substances are lead, mercury, etc. So you need to be careful while using them. After re-use, it should be kept in a certain place without throwing it away. Try to recover and reuse these substances as much as possible. Then they will not be able to spread easily in the environment.

Corrosive

If this marked substance gets in the body, it causes wounds in the body. Inhalation can also damage internal organs. Examples of such substances are concentrated solutions of hydrochloric acid, sulfuric acid, sodium hydroxide

If you want to know more, there you can read "Authoring Services for Safety Data Sheets (MSDS / SDS / eSDS) and Product labels | Multilanguage Authoring of Safety Data Sheets (SDS / MSDS) | Authoring of Extended Safety Data Sheets (eSDS) | Multilanguage Generation / Printing of Product Labels | Translations or Updating of Existing MSDS and Obsolete Product Labels | B-Lands Consulting" https://www.reachteam.eu/web/english/services/EU/sds/sds-msds-labelling-authoring.html?gclid=Cj0KCQjwyZmEBhCpARIsALIzmnJwRdyxZZf_YfrdqVRWrPyEEWNYdL4i5zGeUO2ijuARQHVDgAzFcLMaAilHEALw_wcB

So we all should know before we work with chemicals.and we all should know becuase we might use this someday.if we don't know about this then there can be happened a massive loss of us that we can't regain.this is highly important to know for a chemist and also i bit kess important for general people in the daily activities.

At last, i hope this reading will be useful for you. I will write more about chemistry and it's advantages and disadvantages because chemistry is every where that is so related to our lives. we should know..

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