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Topic: Can flash made from KMno4 and Al cause blindness?  (Read 9234 times)

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Offline Basha

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Can flash made from KMno4 and Al cause blindness?
« on: November 11, 2009, 09:10:35 AM »
Can flash made from KMno4 and Al in ratio 3:2 (saw from distance about 0,7 m, less than 5g) cause blindness? (we set it on fire by Mg, because this is not a really good ratio) If it is stupid Question, or in bad category sorry. Thanks for all answers. (and i know pyrotechniks are dangerous)
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Offline Borek

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Re: Can flash made from KMno4 and Al cause blindness?
« Reply #1 on: November 11, 2009, 09:46:05 AM »
Question is not stupid, but impossible to answer. Depends on zillions of unpredictable factors.

0.7m sounds dangerously close, but I had similar mixture exploding in plastic tube I held in my hand - and I am not blind nor fingerless, so obviously if you are lucky you can survive intact. But that was a stupid mistake on my side and a lesson that I remember very well, I would not try the same for the second time.

Please read forum rules before posting more.
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Offline Basha

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Re: Can flash made from KMno4 and Al cause blindness?
« Reply #2 on: November 11, 2009, 10:01:12 AM »
Thank you for answer. I am happy i am not blind  :D
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Offline BetaAmyloid

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Re: Can flash made from KMno4 and Al cause blindness?
« Reply #3 on: November 11, 2009, 10:50:42 PM »
If you ever did, you would want to wear a mask with dark contrast.

:rarrow: Flash Blindness :larrow:
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Offline Basha

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Re: Can flash made from KMno4 and Al cause blindness?
« Reply #4 on: November 12, 2009, 10:13:47 AM »
I know I should wear mask with dark contrast. I forgot only.
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Offline BetaAmyloid

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Re: Can flash made from KMno4 and Al cause blindness?
« Reply #5 on: November 12, 2009, 04:37:05 PM »
Quote from: Basha on November 12, 2009, 10:13:47 AM
I forgot only.

Its usually good to not forget lab safety.  :P haha
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Offline 408

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Re: Can flash made from KMno4 and Al cause blindness?
« Reply #6 on: November 12, 2009, 06:24:36 PM »
Mg based flashes do emit UV, so it is not likely good for your eyes.
I was temporarily blinded( 30s or so) by a strontium nitrate and Mg flash made many years ago.
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Offline BetaAmyloid

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Re: Can flash made from KMno4 and Al cause blindness?
« Reply #7 on: November 12, 2009, 10:52:45 PM »
How long was your temporary blindness?
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Offline Borek

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Re: Can flash made from KMno4 and Al cause blindness?
« Reply #8 on: November 13, 2009, 02:47:36 AM »
Quote from: 408 on November 12, 2009, 06:24:36 PM
I was temporarily blinded( 30s or so)

Quote from: The Cancer Curer on November 12, 2009, 10:52:45 PM
How long was your temporary blindness?

Reading comprehension...
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Offline BetaAmyloid

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Re: Can flash made from KMno4 and Al cause blindness?
« Reply #9 on: November 13, 2009, 06:28:59 AM »
Quote from: Borek on November 13, 2009, 02:47:36 AM
Reading comprehension...

Oh is that what they call it?

I thought he meant his age. I thought he meant he was in his "30's or so."

Thanks for the help Borek - great guy.

:)
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Offline 408

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Re: Can flash made from KMno4 and Al cause blindness?
« Reply #10 on: November 13, 2009, 10:27:08 AM »
Quote from: Borek on November 13, 2009, 02:47:36 AM
Quote from: 408 on November 12, 2009, 06:24:36 PM
I was temporarily blinded( 30s or so)

Quote from: The Cancer Curer on November 12, 2009, 10:52:45 PM
How long was your temporary blindness?

Reading comprehension...

Thank-you, Borek for clearing that up before I was online again.

The blindness was likely not the result of the mass of flash, which was only a few grams, non stoichiometric as I wanted longer red light emission, not an explosion, but the fact that it burned faster than anticipated for a nonstoichiometric mix, and this occured less than a meter from me.  Lesson learned: use an ignition method that gives you some distance from what you are testing.
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