Salmon Egg wrote:
> I was just cleaning out some hydroponic pots for a new season. I am using
> hydrogen peroxide to get rid of algae and other such crap. I started using
> 35% solution. The recommended dilution was 1oz to a gallon (96oz) of water.
> This would give me an ultimate solution of about 0.35%.

> Apparently, while trying to run brushes through some of the tubing, I dipped
> my hands into the solution before it was fully diluted. The result was an
> ashy white appearance on some of my fingers. It has now been a few hours
> since that happened, and almost all that ashyness has disappeared.

> Was that truly oxidized skin or components in the skin? Is that what I
> should have expected from hydrogen peroxide? Who has had such exposure and
> what happened?

> Bill
> — Fermez le Bush–about two years to go.

You can get it from the freely available 3% solution on moderately long
exposure such as trying to clean a small wound. Net effect is minimal if
the exposure is not very protracted. Worst case for the dilute stuff is
when a bandage is slapped on a wound before the excess peroxide has
drained off. The resulting skin appearance after a couple of days is
that of a whitened mess that sloughs away after a while and normal skin
growth takes over.
FK

<Uncle…@hate.spam.net> wrote:
> Are you growing cloned Northern Lights?  All female; 30 wt-% single
> isomer /_\-9-THC.  Now tell Uncle Al why the idiots in corn, rice, and
> wheat breeding can’t get it together.

I do not indulge although I would if medical necessity arose.

My son once drove me to a relatively crowded hydroponics store. He commented
that I appeared to be the only person there who was interested in growing
tomatoes. This observation was reinforced when we noted someone paying for a
fairly expensive large plastic gismo using a wad of what appeared to be $5
bills.

Bill
— Fermez le Bush–about two years to go.

news:C229AAE8.6B265%salmonegg@sbcglobal.net…

>I was just cleaning out some hydroponic pots for a new season. I am using
> hydrogen peroxide to get rid of algae and other such crap. I started using
> 35% solution. The recommended dilution was 1oz to a gallon (96oz) of
> water.
> This would give me an ultimate solution of about 0.35%.

> Apparently, while trying to run brushes through some of the tubing, I
> dipped
> my hands into the solution before it was fully diluted. The result was an
> ashy white appearance on some of my fingers. It has now been a few hours
> since that happened, and almost all that ashyness has disappeared.

> Was that truly oxidized skin or components in the skin? Is that what I
> should have expected from hydrogen peroxide? Who has had such exposure and
> what happened?

Yup.  35% H2O2 turns skin white and itches like crazy.  Been there, done
that, got the t-shirt.
As soon as one sees the problem – loads of running water.

–
Ron Jones
Process Safety & Development Specialist
Don’t repeat history, unreported chemical lab/plant near misses at
http://www.crhf.org.uk
Only two things are certain: The universe and human stupidity; and I’m not
certain about the universe. ~ Albert Einstein

> I was just cleaning out some hydroponic pots for a new season. I am using
> hydrogen peroxide to get rid of algae and other such crap. I started using
> 35% solution. The recommended dilution was 1oz to a gallon (96oz) of water.
> This would give me an ultimate solution of about 0.35%.

> Apparently, while trying to run brushes through some of the tubing, I dipped
> my hands into the solution before it was fully diluted. The result was an
> ashy white appearance on some of my fingers. It has now been a few hours
> since that happened, and almost all that ashyness has disappeared.

> Was that truly oxidized skin or components in the skin? Is that what I
> should have expected from hydrogen peroxide? Who has had such exposure and
> what happened?

H2O2 diffuses through the dead layer of skin until it hits live meat
and catalase.  It then sub-dermally explodes into gaseous oxygen.
Nasty.

Are you growing cloned Northern Lights?  All female; 30 wt-% single
isomer /_\-9-THC.  Now tell Uncle Al why the idiots in corn, rice, and
wheat breeding can’t get it together.

–
Uncle Al
http://www.mazepath.com/uncleal/
 (Toxic URL! Unsafe for children and most mammals)
http://www.mazepath.com/uncleal/lajos.htm#a2