Miscellaneous dangerous substances , Science

Assignment Help:

Miscellaneous Dangerous Substances : This was introduced in the United Kingdom to identify other hazardous substances and consists of a black exclamation mark on a white background.

 1116_UN Hazard class symbols.png

 Charts showing UN Hazard class symbols on transportation of hazardous goods.

Besides the above recognised classes for hazardous chemicals, there is another very important class of compounds which you should be aware of. 'These are called carcinogens. These are the substances which cause cancer. There are a number of substances which are known to induce cancer many months or years after the initial exposure. Some substances which are known or suspected carcinogens are aniline, chloroform, benzyl chloride, chromates of lead and zinc, hydrazine etc. Ninhydrin - the reagent used in biological and biochemical tests for the presence of amino acids and proteins, is also thought to be a possible carcinogen, but this has yet to be confirmed. Similarly some stains like fusion used in biology lab also belong to this category and extreme care should be exercised in their use. The examples given here are very few, however more and more substances are being shown to be carcinogenic and the fact that even quite common substances may have some carcinogenic activity emphasizes the necessity of consulting reference literature before starting work with materials when you are ignorant of their potential hazards.

Before proceeding further you can try to answer the following question based on the nature of hazardous substances.


Related Discussions:- Miscellaneous dangerous substances

Archaeological evidence, Archaeological Evidence: The study of human ...

Archaeological Evidence: The study of human antiquities, especially of prehistoric period is known as archaeology. The biological and cultural evolution of man proceeded side

Cleavage, what does occur chemiial changes during cleavage?

what does occur chemiial changes during cleavage?

Define the factors that are affecting colour perception, Define the Factors...

Define the Factors That Are Affecting Colour Perception The two most important factors which influence colour perception include: Temperature, and Humidity How do these factors

Enviromental, what is the structure of the ecosystem

what is the structure of the ecosystem

Copernican revolution , The Copernican Revolution: It was right in the ...

The Copernican Revolution: It was right in the midst of these developments in the fifteenth century, that there came the first major break from the whole system of ancient thou

Introduction to disposal of chemical wastes, INTRODUCTION : In this activi...

INTRODUCTION : In this activity, your Counsellor will perform some experiments illustrating the principles behind some of the disposal procedures. These principles are given below

Nutrition, 1. A patient with Chronic Kidney Disease (Stage IV), who ma...

1. A patient with Chronic Kidney Disease (Stage IV), who makes very little urine, presents to the hospital with severe nutritional deficiencies.  You are starting her

Ecology, what are relations of ecology with other sciences?

what are relations of ecology with other sciences?

Explain the term - ants, Explain the term - Ants  Ants are the most wid...

Explain the term - Ants  Ants are the most widespread species of insects in soil and consume plant residues, but are more active in humifying insects than plants.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd