What are Some Strong-Smelling Chemicals Used in a Laboratory?

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Discussion Overview

The discussion revolves around identifying strong-smelling chemicals commonly used in laboratory settings, particularly those that should be handled under a chemical hood for safety reasons. Participants share their experiences and knowledge regarding various chemicals and their odors, as well as safety considerations related to inhalation of chemical vapors.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant lists several strong-smelling chemicals, including Glacial Acetic Acid, Chloroform, and Hydrogen sulfide, suggesting they should be used under a chemhood.
  • Another participant adds Carbon disulfide, putrecine, and skatole to the list of strong-smelling chemicals.
  • A participant emphasizes the importance of not inhaling any chemical vapors, regardless of their smell, suggesting that compiling lists may be problematic.
  • One participant shares a personal anecdote about the temptation to smell chemicals and mentions historical practices of tasting them.
  • A reference to a Wikipedia page about stink bombs is made, noting that many sulfur or ammonium compounds are notably odorous.
  • Concerns are raised about the limitations of lists of smelly chemicals, particularly regarding odorless but dangerous substances like hydrogen sulfide, which can mask danger at high concentrations.
  • Another participant recounts a dangerous incident involving nitrogen in a lab setting, highlighting the risks associated with chemical handling.

Areas of Agreement / Disagreement

Participants express a mix of agreement on the need for safety precautions in handling chemicals, but there is no consensus on the efficacy or completeness of compiling lists of smelly chemicals. Some emphasize the dangers of odorless chemicals, while others focus on the strong-smelling ones.

Contextual Notes

There are limitations in the discussion regarding the completeness of the list of chemicals, the potential for odorless toxic substances, and the varying personal experiences with chemical odors. The discussion does not resolve the complexities of chemical safety and the nuances of odor perception.

nbgoku
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Hi there

Do you all have any chemicals that you can think of in a laboratory that give off a very strong smell and should be used under the chemhood

I just used Glacial Acetic Acid today and I had no idea how strong the smell was . from now on I am using it under the chemhood

I have created a list so far, if anyone has anything else I can add that would be great:
* Acetic Acid (Glacial Acetic Acid)
* Acetonitrile
* Ammonia
* Beta-mercaptoethanol
* Cadaverine
* Chloroform
* Formaldehyde
* Hydrogen sulfide
* Methanol
* N-Butanol
* Oleum
*Paraformaldehyde
* Sulfuric acid
*Trimethylamine
*Virkon

Thanks!
 
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Carbon disulfide. putrecine, skatole (3-methyl indole).
 
It's probably a good idea in the chem lab, as a general safety rule, not to inhale any chemical vapors, even the ones with inoffensive aromas.

That way, you don't need to run around compiling lists, which are going to be problematic to check in a given situation.
 
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As a chemist, I could never resist getting a good whiff of something I'd never smelled before. Chemists years ago used to taste them as well. I used to wash my hands with carbon tetrachloride. And oh, Tester's glue :wideeyed:
 
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The problem with making lists of smelly chemical vapors is that it ignores any which might be odorless but nevertheless still dangerous or toxic.

In particular, hydrogen sulfide has the odor of rotten eggs at low concentrations, but this chemical is notorious for paralyzing the olfactory nerves when inhaled at high concentrations. You literally cannot smell it any longer and think you are no longer in danger, when precisely the opposite is true.

The chem hoods are put in labs for a reason, and not just to satisfy the safety boffins. Use them.
 
Here is a list of them too. I believe all of us have enjoyed the smell of hydrogen sulfide at least once in our lives.
One of the most common smells we always find interesting but is less known or cared about by many is that of the rain, which is caused by an organic compound called geosmin produced a type of soil-dwelling bacteria named actinomycetes.
 
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SteamKing said:
The problem with making lists of smelly chemical vapors is that it ignores any which might be odorless but nevertheless still dangerous or toxic.

In particular, hydrogen sulfide has the odor of rotten eggs at low concentrations, but this chemical is notorious for paralyzing the olfactory nerves when inhaled at high concentrations. You literally cannot smell it any longer and think you are no longer in danger, when precisely the opposite is true.

The chem hoods are put in labs for a reason, and not just to satisfy the safety boffins. Use them.

When I was a research assistant with the Organic Geochemistry Group at FAU, my boss dang near killed himself with nitrogen. He was evaporating down a sample under the hood with a nitrogen blanket over the sample. The flow rate was stepped up, surpassing the hood's capability to evacuate. After a while, his knees buckled and he passed out.
 
Thanks for the suggestion.
 

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