[maxvortex]

The subject says it all :-)
I need to make nickel oxide but am not quite sure how to make the heating part.
As far as i know i need to dissolve it in nitric acid to get the nitrate and then heat to decompose nickel nitrate to nickel oxide. OK, but to heat this solution, at what temperature, how long etc.

Regards !

[curiouscat]

The Nitrate decomposes at ≈260°C initially forming the nitrite which also decomposes at about the same temperature.

[maxvortex]

Hmmm. how to make such temperature in some basic/home conditions...

[curiouscat]

Hmmm. how to make such temperature in some basic/home conditions...

What's the temperature of a regular stove / propane flame? 260°C shouldn't be hard.

[Arkcon]

A hot plate, dedicated to just chemistry uses, and never for cooking food, and used out of doors should be OK.

You can probably find a reasonably cheap earthenware dish, to slowly evaporate the concentrated solution, and then roast the salt.  Pyrex glass would be ideal.  Again, dedicated to chemistry, not for cooking.

I'd be a little leery of someone roasting a nitrate to decomposition.  But perhaps there are references tat say that the decomposition of nickel nitrate isn't likely to explode.  But that's all the more reason to go with an electric hot plate, away from structures, instead of an open flame.

[billnotgatez]

http://www.sciencelab.com/msds.php?msdsId=9926215
Here is a MSDS
http://en.wikipedia.org/wiki/Nickel%28II%29_nitrate
Here is the WIKI
http://www.chemicalland21.com/industrialchem/inorganic/NICKEL%20NITRATE.htm
Here is a site that mentions cancer

Outside may be OK but a hood would be better
Hotplates are usually safer that open flame

Heating Nitric acid sounds like you should pay attention to the possible dangers
It is not like heating water.