Sciencemadness Discussion Board

What'd i do?

rivetboi - 30-5-2011 at 15:04

This will be the general title of many of my posts. Not that i am being random and just mixing things. No, i actually usually think i know what i am doing...

i will start with what i hope is an easier cosmetic product question. i am very fond of Betadine Surgical Scrub as only a borderline OCD subject can be. But in the past several years, its pricing has gone from trivial to insanity. Strangely, the non-surgical scrub Betadine (povidone iodine solution) has stayed in the trivial price range. But it doesn't lather; it just drips.

So i figured that mixing some generic povidone solution with some generic castille soap might give me the bubbles and the sterilizing. Which i think it does. Only i have a question about the color changes.

Povidone is the standard iodine brown. The castille soap is a golden tawny. Mixed they become opaque white. But they dry to the yellowish brown iodine stain we all know an love so much. Any ideas what is going in this chromological mystery?

turd - 30-5-2011 at 22:25

Psychotherapy may come cheaper in the long run. :P If that doesn't help, buy a kg of KMnO4 - it will last a lifetime.

hissingnoise - 31-5-2011 at 01:05

I thought this was another spambot - sans links . . .:D

The WiZard is In - 31-5-2011 at 09:18

Quote: Originally posted by rivetboi  

i will start with what i hope is an easier cosmetic product question. i am very fond of Betadine Surgical Scrub as only a borderline OCD subject can be. But in the past several years, its pricing has gone from trivial to insanity. Strangely, the non-surgical scrub Betadine (povidone iodine solution) has stayed in the trivial price range. But it doesn't lather; it just drips.

Betadine's Surgical Scrub's MSDS sez.

May contain either or both of the following:

ammonium nonoxynol-4-sulfate 9051-57-4
nonoxynol-9 26027-38-3

They do be :— Surfactants.

Just use whatever clear liquid hand soap/cleaner you prefer.

The regular stuff contains glycerin rather then surfactants.

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djh
----
The study of well-being [Book review.]
Strength in a smile
A new discipline moves to centre-stage
The Economist May 12th 2011 | from the print edition

Flourish: A Visionary New Understanding of Happiness and Well-Being.
By Martin Seligman. Free Press; 368 pages; $26.
Nicholas Brealey Publishing.

Mr Seligman’s book is, in effect, an attempt to add
dashes of both Aristotelian wisdom and Nietzschean grit
to the stock of Benthamite utilitarianism that underlies
much of the newer work in this field. Mr Seligman says
he now rejects the Aristotelian view that all human action
aims at happiness. But Aristotle’s term, eudaimonia,
usually rendered in English as “happiness,” actually
translates better as “flourishing”. Moreover, Mr
Seligman’s emphasis on “good character” is reminiscent
of the Aristotelian virtues (and chimes with recent work
carried out in British think-tanks). As for Nietzsche,
whose ironic writings seem to occupy another universe
from Mr Seligman’s empirically grounded
“positive psychology”, his idea that the “will to power”
drives much human action finds ready approval here.

hissingnoise - 31-5-2011 at 11:28

'Sorry rivetboi, the OCD reference didn't register when I read your post . . .


rivetboi - 1-6-2011 at 00:25

i figured castille soap would be an acceptable surfactant but the color change has me wondering. Any other suggested surfactants?

@Turd: i just so happened to pick up 940 grams of green sand (Pot Perm) today at Grainger where they have it on clearance. What were you suggesting i do with it?