07-27-04 22:18
No 522051
SWIW has found Oxone OTC. The label says, "Active ingredent : Potassium peroxymonosulfate", I am reading it right now just to make sure I am not mispelling anything wrong.
I know also that the guys who sell this product get the Oxone from DuPont. From the label, I believe it is the only active ingredient. Now, I have no idea of what the concentration is.
Can I titrate this with HCl to find out ? Is it mole / mole or something more complicated ?
(Hive Bee)
07-27-04 22:29
No 522052
Check here for the information .....
TABLE I
DuPont Oxone® Physical Properties and Typical Analysis
Molecular Weight (triple salt)
614.7
Active Oxygen
% min.
% average analysis
% theoretical (triple salt)
4.5
4.7
5.2
Active Component
% KHSO5, min.
42.8
Bulk Density
g/cm3 (Mg/m3)
lb/ft3
1.15-1.30
72-81
Particle Size
through USS Sieve #20, %
through US Sieve #200, % min.
(also see Table II)
100
10
pH
at 25°C (77°F)
1% solution
3% solution
2.3
2.0
Solubility
g/L, H2O, 20°C (68°F)
(also see Table III)
256
Moisture Content
% max.
0.1
Stability
% active oxygen loss/month
<1
Standard Electrode
Potential (Eo)
V
-1.44
Heat of Decomposition
kJ/kg
Btu/lb
251
108
Thermal Conductivity
W/m·K
Btu·ft/h·ft2·F
0.161
0.093
.....read more here,......java
http://www.dupont.com/oxone/techinfo/
Just hold on to the thread...that keeps us going
http://www.chiapaslink.ukgateway.net/
(Hive Bee)
07-27-04 22:40
No 522055
To java : The reference by DuPont shows how to titrate it to determine the concentration, thank you. I have looked at this before, but at the time I did not have a strong interest in Oxone and I have not bookmarked it.
Also, I though the pH would be BASIC, but from the technical info it is acidic ( pH = 2 to 3 listed there ) so it obviously can't be titrated with HCl.
(Hive Bee)
07-28-04 02:12
No 522076
I tried a fast pH test on the Oxone. Measured 2.0 g of Oxone, dissolved in 200 ml H2O, purified water ( de-ionized, reverse osmosis ) bought at local grocery store.
Well, I expected to see a low pH, since this would correspond to a 1 % percent solution, right ? According to the DuPont MSDS, the pH should be around 2.0.
I measured the water pH first , to be sure, used my electronic pH meter which I trust, never had problems with before.
Well, water pH = 7.3 - 7.4
After adding the Oxone ( tried it twice, washed everything just to be sure )
With Oxone added, ph = 9.5 once, 9.8 second try.
Is it right ? Is the Oxone old ( possible ) or has it some other stuff added ? Why is the pH basic ?
(Hive Bee)
07-28-04 03:41
No 522099
From the DuPont info sheet :
Since Oxone® is acidic, it is usually blended with sufficient alkaline salts to buffer it to near-neutral or slightly alkaline pH when compounded into cleaners.
I would say it is possibly what is causing the high pH. I will try to find out from the manufacturer. The product I bought is a pool shock, I guess who made it could have added something to raise the pH. Not the slightest mention of this in the product label though. If someone knows for sure please post.