Dear Dr Raid

Have you examined the rock salt. I see it a good solvent.

Regards

Dear Raid

MgO is slightly soluble in water to give a pH of higher than 7 due to the formation of Mg(OH)2.. It is of course soluble in acidic media but it will not be MgO anymore but Mg2+ solution.It is soluble in strong alkaline solution as ZnO and Al2O3 are.Anyhow, please see the following reference for more information.

Materials Transactions, Vol. 45, No. 8 (2004) pp. 2712 to 2718.

Good luck.

Dear Raid

Solvent mixed spray pyrolysis technique has attracted a global interest in the synthesis of nanomaterials since reactions can be run in liquid state without further heating. Magnesium oxide (MgO) is a category of the practical semiconductor metal oxides, which is extensively used as catalyst and optical material. MgO nanoparticles were successfully synthesized using a solvent mixed spray pyrolysis.

so you may see this paper

International Journal of Metals

Volume 2014 (2014), Article ID 389416, 4 pages

http://dx.doi.org/10.1155/2014/389416

Research Article

Synthesis of MgO Nanoparticles by Solvent Mixed Spray Pyrolysis Technique for Optical Investigation

K. R. Nemade and S. A. Waghuley

Best regards 

Dear colleague

I agree with the answers and explanations above.

Thank you

I'll have to defer to the other scholars' contributions here as I am not familiar with the topic.

Best regards,

Debra

Dear Saeed Al Rashid

The solvent mixed spray pyrolysis technique is a simple, useful, and an economic technique to prepare MgO nanoparticles ,but im asking about the way to soluble the nano MgO. anway I full thanks for you answer and nots.

Regards.

Dear Mohammad Kooti

may be Ill go for water becase I want to use it as anti bacterial ,

and Thanks for your time and nots.

regards

Dear Saeed Al Rashid

The solvent mixed spray pyrolysis technique is a simple, useful, and an economic technique to prepare MgO nanoparticles ,but im asking about the way to soluble the nano MgO. anway I full thanks for you answer and nots.

Regards.

Dear All

Full thanks for all the comments.

regards

Dear Dr Raid

Have you examined the rock salt. I see it a good solvent.

Regards

Dear Miqdam 

thanks for your suggestion

Regards