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cleaning engine used oil..
I was under the impression that [i]used[/i] engine oil was carcinogenic due to the fact that most of ...
21-12-2005 at 03:21
by: DrP
How disolve this?
[quote]
but what about POLYVINYL CHLORIDE RESIN and CYLCLOHEXANONE what happens with them in the wh ...
21-12-2005 at 01:20
by: DrP
THF in general synthesis.
THF is a much better solvent than mineral oil. It's a much more polar molecule. Thus the reaction ...
21-12-2005 at 01:09
by: DrP
How disolve this?
The PVC resin won't go accross in the distillation - it will stay behind as solid gunk at a guess (d ...
20-12-2005 at 01:52
by: DrP
magnitude of the particle in chemistry
Hmm - sorry to drag this up as it's an old thread, but I found it amusing reading... ;)


Anyway ...
19-12-2005 at 08:47
by: DrP
Cleaning Glassware
Never tried salt and acetone - think I might next time I get something stuck in some glassware.

W ...
16-12-2005 at 08:11
by: DrP
Cooling during separation?
Sounds like your on the right track with the seperating funnel. Keep it cool if your worried about ...
15-12-2005 at 03:23
by: DrP
Forum upgraded!
I agree with Chemoleo on this one - Seperate serious discussion from general chat. Also makes it pr ...
9-12-2005 at 04:00
by: DrP
Composition of "Ni99" welding rods.
Hi JP Smith - I thought your question was quite clear.

Just out of interest - why do you need k ...
9-12-2005 at 03:11
by: DrP
Any soil scientists out there?
Hi Tacho,

Sorry for the delay in the reply - been busy. Im pretty sure the names are fairly inter ...
25-11-2005 at 07:47
by: DrP
dH20 UK
I get 25 kg bottles of distilled water from Univar. Likely they just sell B2B though - Give them ...
24-11-2005 at 08:56
by: DrP
Any soil scientists out there?
[quote]
When I think of a spectrophotometer analisys I think of adding a few drops of a specific re ...
22-11-2005 at 03:35
by: DrP
Question About Cheap Digital pH Meters
I was given some cheap plastic pH meters. First I was pleased the freebies, however, I found I had ...
21-11-2005 at 08:53
by: DrP
Composition of "Ni99" welding rods.
I personally have no idea. Have you tried posting on a weilding forum?
http://www.aws.org/cgi-b ...
17-11-2005 at 06:13
by: DrP
Woodpaint
For a waterbased basic white formulation try:

75% Acrylic Binder in water emulsion (50%)
15 - 20 ...
14-11-2005 at 06:10
by: DrP
Woodpaint
What's the application (internal / external; decorative / protective)? - how much do you need ...
14-11-2005 at 01:32
by: DrP
Titanium Dioxide
I have about a tonne of TiO2 at work - we use it as a white pigment in paint.

- This is probab ...
11-11-2005 at 08:00
by: DrP
Urea Phosphate
I found some sodium citrate and disolved it in water - it gives a pH of around 8. This seems to bri ...
7-11-2005 at 08:15
by: DrP
how to make Polypropylene in lab?
Dr. Beaker, Can it be done by ATRP? or is this just for the block copolymers. Surley it would be an ...
4-11-2005 at 01:55
by: DrP
how to make Polypropylene in lab?
Here you are:

https://www.chem.ubc.ca/faculty/wassell/CHEM415MANUAL/Experiment9/Experiment9.htm
3-11-2005 at 09:25
by: DrP
how to make Polypropylene in lab?
Take your Ziegler-Natta catalyst, usually TiCl3 or TiCl4, along with an aluminum based co-catalyst, ...
3-11-2005 at 07:31
by: DrP
UREA FORMALDEHYDE
I have a solution of Urea Formaldehyde polymer in water (there may be some surfactants and stabilize ...
3-11-2005 at 02:47
by: DrP
aged formaldehyde soln. precipitate
http://publish.uwo.ca/~jkiernan/formglut.htm

Don't know what it is myself, but this site rec ...
2-11-2005 at 09:16
by: DrP
Short Time Distillation
Could mean at reduced presure?? No other way to make it faster.

Who suggested it in the first pl ...
14-10-2005 at 08:10
by: DrP
Interesting?
Hi,

I don't know if this is interesting or not but this guy has been working to replicate io ...
14-10-2005 at 02:56
by: DrP
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