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A comment on Phosphine detected in the atmosphere of Venus – an indicator of possible life?. Parent comment

Re:Phosphine detected in the atmosphere of Venus – an indica... by metalliqaz on Monday September 14, 2020 @10:42AM (#24470703)
that is true although there is also a ton of acid up there
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Re:Phosphine detected in the atmosphere of Venus – an indica... by Symmetry on Monday September 14, 2020 @12:41PM (#24472191)
At 50 km up only 7 ppm

https://selenianboondocks.com/2013/11/venus-isru-what-do-we-...

Which as far as I can tell isn't terrible if you don't breath it in and if you do the official allowed exposure time is 10 minutes for 5 ppm. I would recommend you wear goggles in addition to breathing equipment, though.

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Re:Phosphine detected in the atmosphere of Venus – an indica... by dragonwriter on Monday September 14, 2020 @06:17PM (#24475788)
> Which as far as I can tell isn't terrible if you don't breath it in and if you do the official allowed exposure time is 10 minutes for 5 ppm.

Presumably that's 5ppm under terrestrial conditions, Venus at 40km has substantially higher pressure, more than is explained by the higher temperature alone, so any given ppm is a greater number of molecules per cm³, right?

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Re:Phosphine detected in the atmosphere of Venus – an indica... by kortex on Monday September 14, 2020 @04:20PM (#24474663)
7 ppm of atomized H2SO4 will definitely sting a bit. That's roughly 7 g/m^3, TLV for sulfuric acid mist is 1 mg/m^3. Survivable but you would want to minimize time in it.
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