Is Methylene Chloride dangerous?

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Discussion Overview

The discussion centers on the potential dangers of methylene chloride, particularly in relation to accidental inhalation and its carcinogenic properties. Participants explore safety protocols, personal experiences, and the implications of exposure in both laboratory and general use contexts.

Discussion Character

  • Debate/contested
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • One participant expresses concern about inhaling methylene chloride after an accident, questioning whether they should be worried about cancer risks.
  • Another participant suggests consulting the Material Safety Data Sheet (MSDS) for methylene chloride, affirming its potential carcinogenicity.
  • A participant emphasizes the importance of reporting the incident to a supervisor and considering medical advice.
  • There is a recommendation for proper safety equipment, such as gloves and goggles, and the use of a fume hood when working with methylene chloride.
  • A participant shares findings from a lab safety study, indicating that methylene chloride is considered highly hazardous and should be used with caution.
  • Some participants argue that while methylene chloride is a known carcinogen, significant cancer risks are primarily associated with long-term exposure rather than a single incident.
  • One participant compares the risk of a single exposure to that of a person who has smoked only one cigarette, suggesting that the risk of cancer from a single exposure is minimal.
  • Concerns are raised about the MSDS being more focused on legal protection than providing practical safety information.
  • Another participant notes that while methylene chloride can cause various health issues, including skin irritation and liver effects, the risk of cancer from short-term exposure is considered low.

Areas of Agreement / Disagreement

Participants express differing views on the level of risk associated with a single exposure to methylene chloride, with some downplaying the cancer risk while others emphasize the need for caution and adherence to safety protocols. No consensus is reached regarding the immediate health implications of the incident described.

Contextual Notes

Participants highlight the importance of understanding safety data and protocols related to methylene chloride, but there are unresolved questions about the adequacy of the MSDS and the actual risk levels associated with different exposure scenarios.

tankarish
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I accidently dropped a vial of it, thus inhaling some of it. My friend told me it can cause cancer. Should I be worried?
 
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You should Google "Methylene Chloride MSDS", and read one of the MSDS's that come up. And yes, it can cause cancer. What are you going to do about it now? You can't unbreathe it.
 
Vanadium 50 said:
You should Google "Methylene Chloride MSDS", and read one of the MSDS's that come up. And yes, it can cause cancer. What are you going to do about it now? You can't unbreathe it.
Not much I guess, thanks though.
 
tankarish said:
I accidently dropped a vial of it, thus inhaling some of it. My friend told me it can cause cancer. Should I be worried?
Was this at work? Or at a school lab? In general you need to report this accident to your supervisor, and find out if you should see a doctor about it.
 
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tankarish said:
I accidently dropped a vial of it, thus inhaling some of it. My friend told me it can cause cancer. Should I be worried?
Gloves, goggles, fume-hood!
 
In general, you should familiarize yourself with the safety of such substances (e.g. read their MSDS) before you begin working with them.
 
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I recently did a lab ventilation safety study for a major pharma company: methylene chloride was the most hazardous "normal" chemical they were using in their labs. Per their standards it should only be used in a fume hood.
 
While methylene chloride is a proven cancerogenic, its effect were only observed in workers being exposed to its vapours for many years. So maybe you could compare your risk to that of a person who smoked one cigarrette in his life as compared to a heavy smoker.
 
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tankarish said:
I accidently dropped a vial of it, thus inhaling some of it. My friend told me it can cause cancer. Should I be worried?
You are unlikely to the extreme to get cancer from single exposure to methylene chloride.
Inhaling it daily for years to the point where you feel affected would make these odds significant.
Methylene chloride is main component of many paint strippers and lay workers carelessly working with these are not facing cancer epidemics.
On the other hand MSDS is document meant more to cover corporate legal ass than provide you with useful information.
Saying all that I would not work with methylene chloride recklessly.
It can cause skin irritation, allergic skin reactions with ulcerations, can affect liver and yes, after decades of exposure there is a slightly higher than normal risk of certain cancers.
 
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