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#Post#: 794--------------------------------------------------
Chemical awareness
DIR By: Shiva
Date: October 2, 2012, 7:53 am
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I'm writing this one to create awareness among students and
those who are working with chemicals in the lab or at your home.
Even teachers and schools allow some very toxic and dangerous
compounds (like lead & cadmium salts) for practicals which
should be avoided. These chemicals possess extreme environmental
hazard unlike moderately toxic chemicals like Zinc and Copper
compounds, Ammonia, sulfur dioxide etc.. which are moderately
toxic and those can be manageable if you are not exposed
yourself too much to such chemicals. But the below ones are not.
I strongly recommend avoiding the below chemicals unless you are
an expert in chemistry and having sufficient lab facilities to
handle these chemicals.
1. Lithium compounds (cause nerve disorder on chronic exposure)
2. Beryllium and its compounds (Extremely toxic and
carcinogenic)
3. Nitrogen halides (very sensitive explosives)
4. Fluorine and its compounds (Fluorine is the most reactive
element and reacts almost with every element violently and
Fluorides (its compounds) liberate hydrofluoric acid on adding
strong acids which is extremely corrosive and toxic)
5. Sodium metal (Violently reacts with water)
6. Phosphorus and its compounds
7. Oxides of chlorine, chlorates, chlorites, perchlorates,
chloric & perchloric acid (sensitive explosives, & very
reactive)
8. Potassium (reacts with water explosively)
9. Vanadium and its compounds (extremely toxic)
10. Hexavalent chromium compounds such as chromates,
dichromates, chromic acid, chromium trioxide (Carcinogens)
11. Cobalt compounds (an animal carcinogen and very harmful to
the environment)
12. Nickel compounds (Carcinogenic)
13. Arsenic and its compounds (Extremely toxic and carcinogenic)
14. Bromine (Highly toxic and corrosive)
15. Rubidium metal (reacts with water explosively)
16. Cadmium and its compounds (Extremely toxic and carcinogenic)
17 Antimony and its compounds (Extremely toxic even on short
exposure)
18.Caesium metal (reacts with water explosively)
19. Barium and its compounds (Very toxic and will cause
baritosis) Exception is Barium sulfate which is safe and
non-toxic.
20. Mercury and its compounds (Extremely toxic and cumulative
poison)
21. Lead and its compounds (Extremely toxic and cumulative
poison)
22. Sulfur trioxide (Extremely corrosive)
You can post any questions regarding handling chemicals,
reactivity, hazards etc... I hope this is very helpful.
Thank you,
Shiva
#Post#: 811--------------------------------------------------
Re: Chemical awareness
DIR By: LikeCrazy
Date: October 5, 2012, 12:08 pm
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Thanks for informing us!
#Post#: 1688--------------------------------------------------
Re: Chemical awareness
DIR By: Michel
Date: December 26, 2012, 7:16 am
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I was just thinking about gallium and its compounds...how common
are they, and are they also toxic? the only Ga compound that
readily comes to my mind is Gallium nitrate. i think its used in
pharmacy..drug compounding or thereabout :/
#Post#: 1689--------------------------------------------------
Re: Chemical awareness
DIR By: Shiva
Date: December 26, 2012, 7:28 am
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Nope, Gallium and its compounds are not considered toxic in
general. However, oral toxicity of Gallium compounds are very
similar to Bismuth toxicity. On ingestion (especially in
excess), they may affect our kidneys. So, you can handle Gallium
compounds without any problem. I do not have any Gallium
compounds and did not see them either so far. But, I have two
Bismuth compounds - Bismuth carbonate & Bismuth sulfate.
Shiva
#Post#: 2691--------------------------------------------------
Re: Chemical awareness
DIR By: Marie Curiana
Date: August 7, 2013, 2:29 am
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Typically, organic compounds are more subtle and dangerous
regarding toxicity. be careful when handling organometallics,
and shun benzene and its derivatives as much as possible, don't
attempt storing ethers, except you seriously know what you're
doing. avoid inhaling fumes of compounds and don't try to
recognise any compounds by their smell! Be generally careful and
cautious as much as possible in the lab
#Post#: 2694--------------------------------------------------
Re: Chemical awareness
DIR By: la-toya
Date: August 25, 2013, 6:08 pm
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hey guys i found this great site that may be helpful
You can check it out, and see if the resources are beneficial.
HTML http://highschoolchemistryguide.com/
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