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 Post subject: KMnO4
PostPosted: Sat Jul 29, 2017 7:34 pm 
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Ok, now that zantra/Longey has gone, back to more civilised conversations

KMnO4, or Potassium Permanganate/Condy's Crystals is well known for being a useful chemical, being a strong oxidizer it works as a disinfectant, deoderiser and astringent. It can be used for all manner of first aid and survival uses.

However as we all know, it is caustic, and too much KMnO4 can be detrimental.

So, the question is put forward to the general community, I want to create a small info sheet to include with small vials of potassium permanganate so that someone who has never heard of it can use it. What does the community here use it for, and what concentration do you use?. Ideally put it down as a colour (see example)

"a really good disinfecting footbath for treatment of blisters can be made using enough water to cover one's foot and enough condy's crystals to change the water to this colour"

I'll then try to match the colours as best as I can and create a small table to accompany the vial

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 Post subject: Re: KMnO4
PostPosted: Sat Jul 29, 2017 10:30 pm 
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 Post subject: Re: KMnO4
PostPosted: Sun Jul 30, 2017 7:49 am 
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[YouTube]https://www.youtube.com/watch?v=EU5WkkhOxxM[/YouTube]

useful little video

(Note: Admin, if this topic goes more into general survival, feel free to move)

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 Post subject: Re: KMnO4
PostPosted: Sun Jul 30, 2017 11:29 am 
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taipan821 wrote:
Ok, now that zantra/Longey has gone, back to more civilised conversations

KMnO4, or Potassium Permanganate/Condy's Crystals is well known for being a useful chemical, being a strong oxidizer it works as a disinfectant, deoderiser and astringent. It can be used for all manner of first aid and survival uses.

However as we all know, it is caustic, and too much KMnO4 can be detrimental.

So, the question is put forward to the general community, I want to create a small info sheet to include with small vials of potassium permanganate so that someone who has never heard of it can use it. What does the community here use it for, and what concentration do you use?. Ideally put it down as a colour (see example)

"a really good disinfecting footbath for treatment of blisters can be made using enough water to cover one's foot and enough condy's crystals to change the water to this colour"

I'll then try to match the colours as best as I can and create a small table to accompany the vial


Okay, maybe this is a silly question, but why would you do a chart by color and not by weight/mass/volume? Weight/mass/volume is specific and I would think that for something that could potentially be harmful in higher concentrations, you would want to be specific. Color judgment/description is subjective from person to person and a large amount of individuals (particularly men due to color sightedness being an X chromosome-based trait) don't see color well at all. Some people don't even realize it. My husband didn't know he had partial color blindness until his late 20s.

Sounds like a really good idea, just questioning the accuracy of a color-based chart.

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 Post subject: Re: KMnO4
PostPosted: Sun Jul 30, 2017 1:10 pm 
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taipan821 wrote:
[YouTube]https://www.youtube.com/watch?v=EU5WkkhOxxM[/YouTube]

useful little video

(Note: Admin, if this topic goes more into general survival, feel free to move)


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 Post subject: Re: KMnO4
PostPosted: Sun Jul 30, 2017 5:57 pm 
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Ellywick wrote:

Okay, maybe this is a silly question, but why would you do a chart by color and not by weight/mass/volume? Weight/mass/volume is specific and I would think that for something that could potentially be harmful in higher concentrations, you would want to be specific.

Sounds like a really good idea, just questioning the accuracy of a color-based chart.


Its not a silly question, making up solutions by mass/volume would be more accurate and yes, colour can be subjective. However what I'm finding is that when you have to do calculations in a stressful environment the likelihood of error increases. what I might do Ellywick is find out how many individual crystals are needed to get to the intended concentration in 1 litre of water, so its easier to understand

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 Post subject: Re: KMnO4
PostPosted: Sun Jul 30, 2017 7:40 pm 
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Ellywick wrote:
taipan821 wrote:
Ok, now that zantra/Longey has gone, back to more civilised conversations

KMnO4, or Potassium Permanganate/Condy's Crystals is well known for being a useful chemical, being a strong oxidizer it works as a disinfectant, deoderiser and astringent. It can be used for all manner of first aid and survival uses.

However as we all know, it is caustic, and too much KMnO4 can be detrimental.

So, the question is put forward to the general community, I want to create a small info sheet to include with small vials of potassium permanganate so that someone who has never heard of it can use it. What does the community here use it for, and what concentration do you use?. Ideally put it down as a colour (see example)

"a really good disinfecting footbath for treatment of blisters can be made using enough water to cover one's foot and enough condy's crystals to change the water to this colour"

I'll then try to match the colours as best as I can and create a small table to accompany the vial


Okay, maybe this is a silly question, but why would you do a chart by color and not by weight/mass/volume? Weight/mass/volume is specific and I would think that for something that could potentially be harmful in higher concentrations, you would want to be specific. Color judgment/description is subjective from person to person and a large amount of individuals (particularly men due to color sightedness being an X chromosome-based trait) don't see color well at all. Some people don't even realize it. My husband didn't know he had partial color blindness until his late 20s.

Sounds like a really good idea, just questioning the accuracy of a color-based chart.

Based on that video , I don't see how you could do a weight/mass/ volume in the field. It was a single crystal for one litre of water for drinking. 2-4 for wounds.

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 Post subject: Re: KMnO4
PostPosted: Mon Jul 31, 2017 7:33 am 
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Thanks, Flybynight, video put it in perspective for me. Get why you would do by color, but at least number of crystals/seeing a general volume used is a good reference. I think it would be really easy to overshoot just based on color alone (since the amount used between the levels is so small) and then the water wouldn't be useful for anything but writing your name in the snow :D

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 Post subject: Re: KMnO4
PostPosted: Mon Jul 31, 2017 11:33 pm 
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How does one signal with a deep purple liquid? I didn't get that part of the video.

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 Post subject: Re: KMnO4
PostPosted: Mon Jul 31, 2017 11:38 pm 
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Towanda wrote:
How does one signal with a deep purple liquid? I didn't get that part of the video.


if you have snow...or, depending on the amount of crystals carried a small waterway?

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