Metal Toxicity: Handling Cobalt and Tungsten Safely without Gloves

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Discussion Overview

The discussion centers on the safety of handling pure cobalt and tungsten metals without gloves, as well as the toxicity of cadmium and other metals. Participants explore the potential health effects and risks associated with direct contact with these materials, considering both chemical properties and practical handling scenarios.

Discussion Character

  • Debate/contested
  • Conceptual clarification
  • Technical explanation

Main Points Raised

  • One participant questions the safety of handling pure cobalt and tungsten without gloves, asking about long-term effects.
  • Another participant raises concerns about cadmium, noting its poisonous nature and inquiring about the consequences of touching it.
  • Some participants argue that while cadmium salts are highly toxic, metallic cadmium is relatively safe, suggesting that physical danger may arise more from its use as a weapon than from chemical exposure.
  • There is a mention of specific handling precautions for dangerous metals like thallium, which are marked with warnings and unusual shapes.
  • A later reply references Oliver Sacks' memoir, suggesting that the historical use of tungsten in light bulbs implies it is benign, as no significant toxicity has been reported among workers in that industry.

Areas of Agreement / Disagreement

Participants express differing views on the safety of handling cobalt and tungsten without gloves, and there is no consensus on the toxicity of cadmium. The discussion remains unresolved regarding the long-term effects of handling these metals.

Contextual Notes

Participants' claims depend on various assumptions about toxicity, historical usage, and the nature of the metals discussed. The discussion does not resolve the uncertainties surrounding the safety of handling these materials.

Calpalned
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Is it safe to not use a glove to handle a small block of pure cobalt metal? Is a pure tungsten rod safe too? Are there any long term effects?

Thank you so much.
 
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I just came across this picture of a guy holding a rod of pure cadmium metal.
cadrod.jpg

http://unitednuclear.com/index.php?main_page=product_info&cPath=89&products_id=959

Isn't cadmium very poisonous? What are the consequences of touching it?
 
Salts are highly toxic, but metallic cadmium is relatively safe.

That is, rod as the one shown on the picture is much more dangerous when used as a club than because of its chemical properties.
 
Borek said:
That is, rod as the one shown on the picture is much more dangerous when used as a club than because of its chemical properties.
:DD
 
Toxic metals, such as thallium, that are dangerous to handle are usually "flagged" with unusual shapes, triangular cross-section rods for thallium, as well as being in containers with "Do not breathe dust! Do not dispose of in fire!" warnings all over them.
 
Calpalned said:
Is it safe to not use a glove to handle a small block of pure cobalt metal? Is a pure tungsten rod safe too? Are there any long term effects?

Thank you so much.

If you read Oliver Sacks memoir, "Uncle Tungsten," there is a nice story of young Oliver handling tungsten at his uncle's factory. Given that tungsten was used for years and years and years as the filament in incandescent light bulbs, I expect we would have found out about any minor toxicity of the metal coming from workers in light bulb factories. In the US, you would also be seeing commercials on late night television asking: "Have you or a loved one worked in the lightbulb industry? If so, you may be entitled to a large cash award..." Since none of this is happening, I expect it is safe to assume that tungsten is benign...
 

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