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Preparation of ionic nitrites
After "bad" news from fx... and that is possible that I do not have any nitrite, performed the follo ...
28-5-2024 at 07:27
by: RU_KLO
Diethylether (sulfuric acid saving method)
[rquote=693243&tid=160329&author=Rainwater][rquote=693234&tid=160329&author=Mateo_sw ...
27-5-2024 at 09:26
by: RU_KLO
Preparation of ionic nitrites
Im trying to make NaNO2 for first time.

I choose NO2+NO bubbling in NaOH.

So I made a 4M NaOH ...
27-5-2024 at 06:46
by: RU_KLO
Sulphuric acid from nitric acid
[rquote=693235&tid=160344&author=Chemgineer]Thanks, it seems this breaks down into nitrogen ...
24-5-2024 at 05:46
by: RU_KLO
Diethylether (sulfuric acid saving method)
[rquote=693176&tid=160329&author=bnull]
Good Lord! I'm glad you asked before proceeding. Fe ...
22-5-2024 at 06:22
by: RU_KLO
Diethylether (sulfuric acid saving method)
[rquote=693102&tid=160329&author=clearly_not_atara][quote]The best catalyst was ferric sulfa ...
22-5-2024 at 05:10
by: RU_KLO
Simple way to differentiate MEK and THF
from another post:
http://www.sciencemadness.org/talk/viewthread.php?tid=68973&goto=search& ...
14-5-2024 at 12:04
by: RU_KLO
Simple way to differentiate MEK and THF
[rquote=693058&tid=160314&author=bnull][rquote=693050&tid=160314&author=RU_KLO]The P ...
14-5-2024 at 05:26
by: RU_KLO
Simple way to differentiate MEK and THF
Tried the bisulfite method, first by making it.

in a testube added 3 or 4 gr sodium sulfite, adde ...
13-5-2024 at 07:41
by: RU_KLO
Meniscus in volumetric measurement of mercury
Maybe:
Add water till you transform the negative mercury meniscus to positive water meniscus.
the ...
10-5-2024 at 07:08
by: RU_KLO
Simple way to differentiate MEK and THF
[rquote=692929&tid=160314&author=bnull][rquote=692919&tid=160314&author=RU_KLO]Is th ...
7-5-2024 at 05:14
by: RU_KLO
Simple way to differentiate MEK and THF
Hi, I extracted from PVC glue - used to glue PVC white pipes - a solvent which has Acetone smell.
I ...
6-5-2024 at 12:15
by: RU_KLO
Synthesis of KOH
[rquote=692764&tid=160302&author=MrFormula]I am going to try to make activated charcoal and ...
30-4-2024 at 09:15
by: RU_KLO
Do i have Potassium Chromate?
well still in the getting chromate/dichromate.

Here are pictures of the precipitates of the 2 pro ...
19-4-2024 at 04:42
by: RU_KLO
Metal+phosphate products?
Probably a mixed salt of unknown constitution.
or
maybe: Calcium Aluminum Phosphate, CaAlH(PO4)2 - ...
11-4-2024 at 11:15
by: RU_KLO
Low solubility tin salts?
if it is "whitish" insoluble, probably tin oxide (SnO2).
9-4-2024 at 07:36
by: RU_KLO
Do i have Potassium Chromate?
thanks for the information and the pics.
It seems that I was using persulfate in excess.

for exa ...
5-4-2024 at 06:56
by: RU_KLO
Do i have Potassium Chromate?
Long post, but will try to explain everything that I made, so you can find where I screw up....

T ...
2-4-2024 at 13:45
by: RU_KLO
Extracting chromates from stainless steel
[rquote=691963&tid=160242&author=chornedsnorkack]
Carbonate solutions can go beyond pH 11.
...
26-3-2024 at 16:25
by: RU_KLO
Extracting chromates from stainless steel
Found this very good read to understand Hydroxide ph precipitation.

https://nvlpubs.nist.gov/nist ...
26-3-2024 at 08:42
by: RU_KLO
Extracting chromates from stainless steel
[rquote=691942&tid=160242&author=j_sum1][rquote=691938&tid=160242&author=Rainwater]3 ...
26-3-2024 at 01:47
by: RU_KLO
Do i have Potassium Chromate?
this weekend did a lot of tests.

First the hydroxides precipitation with NaOH went smoothly.
Tak ...
25-3-2024 at 12:26
by: RU_KLO
Concentration of BaCl2 by Common ion efect
Im converting PbSO4 into H2SO4 by HCl as an experiment.

As I have the PbSO4 and HCl mixing and he ...
21-3-2024 at 15:30
by: RU_KLO
Do i have Potassium Chromate?
[rquote=691822&tid=159882&author=fx-991ex]You need to oxidize the Cr(OH)3 to the chromate be ...
21-3-2024 at 15:05
by: RU_KLO
Do i have Potassium Chromate?
[rquote=691814&tid=159882&author=bnull]Chromium (III) hydroxide is soluble in sodium hydroxi ...
21-3-2024 at 07:13
by: RU_KLO
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