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LED Dangers - Unbelievable Paranoia!
[rquote=201417&tid=15492&author=Regolith]When California falls into the sea the entire north ... |
12-2-2011 at 06:18
by: metalresearcher |
LED Dangers - Unbelievable Paranoia!
[rquote=201375&tid=15492&author=Xenoid] Have you ever broken a LED, they are almost indestru ... |
11-2-2011 at 14:37
by: metalresearcher |
LED Dangers - Unbelievable Paranoia!
What a banana jounalism !
Of course, the used elements are an environmental hazard but, as said e ... |
11-2-2011 at 14:29
by: metalresearcher |
KNO3 + sugar does not keep itself burning : ratio ?
Thanks for the tip.
The reason I assume 7:1 is the reaction:
24 KNO3 + C12H22O11 => 24 KN ... |
10-2-2011 at 13:26
by: metalresearcher |
KNO3 + sugar does not keep itself burning : ratio ?
Yesterday I tried to mix KNO3 with sugar. I mixed 1g KNO3 with 0.14g sugar (7:1) and another try wi ... |
9-2-2011 at 23:38
by: metalresearcher |
NaOH in hotel swimming pool ?
During my holiday in a hotel in La Palma (Canary Islands) I watched what pool chemicals thy used: I ... |
7-2-2011 at 11:18
by: metalresearcher |
Why is lava black ?
Many oxides occurring in lava (SiO2, Al2O3, CaO, MgO) are white, so why is lava always black ? |
27-1-2011 at 14:19
by: metalresearcher |
Test purity homemade KClO3
Currently I am making KClO3 (see www.metallab.net/KClO3.php#exp201101 ) and it seems to go well 
... |
17-1-2011 at 14:02
by: metalresearcher |
How much harm does 2400 tons H2SO4 in the Rhine ?
@garagechemist:
Exactly the *diluted* acid is much more reactive to the steel tanks. Moreover when ... |
17-1-2011 at 05:26
by: metalresearcher |
How much harm does 2400 tons H2SO4 in the Rhine ?
Last week a ship with 2400 tons of H2SO4 toppled but did not lose its content. But the ship has yet ... |
16-1-2011 at 23:49
by: metalresearcher |
Passivation of MMO anode?
I can't wait for the delivery of the MMO anode so I started another attempt of making KClO3 which ap ... |
15-1-2011 at 11:32
by: metalresearcher |
SO3 from CaSO4 is it possible ?
But with NaHSO4, the same issues appear: require quartz tubing but at a lower temperature.
Accord ... |
14-1-2011 at 13:28
by: metalresearcher |
SO3 from CaSO4 is it possible ?
There is a thread running in this forum about SO3 from NaHSO4. But when I heat CaSO4 to yellow hot, ... |
14-1-2011 at 12:04
by: metalresearcher |
Best/worst countries for home chemistry
What I miss in the document is :
mixed lighter alkanes (aka gasoline) and propane. These substance ... |
14-1-2011 at 01:14
by: metalresearcher |
Passivation of MMO anode?
@woelen:
Thanks. I already have a knifetip of K2Cr2O7 (in 300ml) in the solution so the color is ... |
12-1-2011 at 07:01
by: metalresearcher |
Passivation of MMO anode?
[rquote=198196&tid=15243&author=Xenoid]Industrial users can get 10 year lifetimes only by ti ... |
12-1-2011 at 02:45
by: metalresearcher |
Passivation of MMO anode?
Here a test run still with graphite rod (MMO anode not received yet).
It is a 300ml "Calvé Pinda ... |
11-1-2011 at 10:36
by: metalresearcher |
Passivation of MMO anode?
Another option is putting the cell into the fridge (or in the freezer). Of course after running the ... |
11-1-2011 at 09:26
by: metalresearcher |
Why does caulk smell like acetic acid ?
When sing a caulking gun for sealing Ismell a strong acetic acid smell. It is special sanitary caulk ... |
10-1-2011 at 12:23
by: metalresearcher |
Sulfur trioxide from sodium hydrogen sulfate
What about the 'Haldenwanger' porcelain crucibles (with a lid glued with the abovementioned kit or ' ... |
10-1-2011 at 09:54
by: metalresearcher |
Large fire in chemicals depot in the Netherlands
Last Wednesday night a large fire occurred in a [url=www.chemiepack.nl]chemicals packaging depot [/u ... |
9-1-2011 at 11:16
by: metalresearcher |
Passivation of MMO anode?
This layer is MMO, deliberately deposited on the anode before you purchased it I think.
I think @wo ... |
9-1-2011 at 11:03
by: metalresearcher |
Passivation of MMO anode?
What about using nonpolar solvents like white spirit or acetone ? |
9-1-2011 at 09:43
by: metalresearcher |
Sulfur trioxide from sodium hydrogen sulfate
Interesting. I have an electric (Kanthal) furnace which can heat till 1200oC.
Where did you buy the ... |
9-1-2011 at 08:19
by: metalresearcher |
Passivation of MMO anode?
Recently I tested a Ti anode which passivated shortly. By scouring with fine sandpaper I removed the ... |
9-1-2011 at 06:57
by: metalresearcher |
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