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

Mirrors and Lenses, I dont understand anything. Please explain the whole le...

I dont understand anything. Please explain the whole lesson

Objectives safe disposal methods of biological materials, Objectives Af...

Objectives After completing this exercise you will be able to: 1. Sterilize and dispose off microbial cultures, 2. Dispose off the carcass of laboratory animals and the e

Curing methods in iron age, Curing methods: The most impbrtant  curing ...

Curing methods: The most impbrtant  curing methods were classified under five heads, namely, inducing vomiting, giving purgative, enem;,  oily enema and nasal  therapy. Specifi

Explain the disorders of the female reproductive system, Explain the Disord...

Explain the Disorders of the Female Reproductive System Over the last decade, there has been a growing concern regarding the prevalence and extent of reproductive tract infecti

The ventricular system, The ventricular system While the ventricular syste...

The ventricular system While the ventricular system is naturally not involved in cognitive processing since it consists of cavities filled with cerebrospinal fluid, it is good to

Experiment of simple hydraulic press, Simple hydraulic press The princi...

Simple hydraulic press The principle of the hydraulic press is illustrated by the following model. Half fill a cylindrical jar with water. Pour melted paraffin wax on the su

Experiments with man in space, Experiments with man in space: We have a...

Experiments with man in space: We have already discussed  the usefulness of space  flights in Blocks 3&4. One is able to make astronomical observations from satellites; get met

SZXDASDas, AskDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD question #MinaDASDDimum 100 ...

AskDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD question #MinaDASDDimum 100 words accepted#

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