Where can I find alum in powder form?
824855
if you find it difficult to find alum in powder form gett the crystal form from the chemist and crush it and pulverise it into a powder
1178077
Scientists suspected that an unknown metal existed in alum as early as 1787, but they did not have a way to extract it until 1825. Hans Christian Oersted, a Danish chemist, was the first to produce tiny amounts of aluminum.\n\nDuring that time, the method to extract aluminum was so costly that aluminum once was considered more precious than gold. \n\nThe plant, owned by J.G. Neher & Sons (aluminum manufacturers) started in 1886 in Schaffhausen, Switzerland, at the foot of the Rhine Falls - capturing the falls’ energy to produce aluminum. Neher's sons together with Dr. Lauber discovered the endless rolling process and the use of aluminum foil as a protective barrier. From there began the wide use of aluminum foil in the packaging of chocolate bars and tobacco products. Processes evolved over time to include the use of print, color, lacquer, laminate and the embossing of the aluminum. \n\nAlthough the technology to extract aluminum improved greatly, it still is a energy extensive process.  If you, as a chemist can figure out a way to reduce the amount of energy needed to extract aluminum even by 1%, your method can make you a millionaire overnight.  There is a thought to motivate you to study Chem.  =)
230380
um i don't know if this site has it, but you might want to try chemguide.co.uk :) it's a pretty good site.
208085
http://www.chemicool.com/
378996
go to london metals exchange\nhttp://www.lme.co.uk/
834757
You can get it from Sigma-Aldrich.\nCheck their website for a provider / agent near your location. And probably you will not get it if you are going to use it for some private use.
496880
Try WW Grainger.  If they don't have them they will point you in the right direction.
35890
Unfortunately, a lot of substances are a mixture of metals and nonmetals. But here are a few suggestions:\n\n-Aluminum foil. Need I say more?\n-Dry ice, carbon dioxide, is made up of two nonmetals\n-Potassium is a metal you should be able to find as a vitamin. They also make iron and calcium supplements.\n-You might be able to find a mercury thermometer.\n-Helium balloons. \n-Gold, silver, and copper jewelry (although most jewelry will actually be alloys of a few metals)\n\nI hope that helped.
817601
try the local chemist....
447091
sodium aluminum sulfate (alum)- ingredient in baking powder.\n\n\nGarnets!\nIncluding the stuff on sandpaper.\n\ningredients in antiperspirant that makes it work: \nAluminum chloride, Aluminum zirconium tricholorohydrex glycine, Aluminum chlorohydrate, Aluminum hydroxybromide
625685
Aluminium has a valanly of 3 Oxgygen has 2\nSo\n4Al + 3O2   -> 2Al2O3
366793
lots of materials' properties can be found. you can try this link..
8289
If you check at any good natural foods store with\na personal care products section, you should be able\nto find a large number of products that do not contain aluminum. Read the labels carefully!  Another\nalternative is a crystal deodorant stone, which you\nsimply wet and apply to the underarm.  I use one \nand like it a lot -- it's quite effective and about\nas basic as you can get in the way of ingredients --\njust minerals.
579735
Guess a group 3 metal such as boron or Aluminium
327571
I would think the best way to do this is to dry the sample and then turn it into a powder.  You could then perform an extraction of the metals possibly with Conc. HCL or HNO3.  There may be an organic solvent that could do this extraction but many of these solvents are not compatible with the plastics in AAS autosamplers.  Preparing the blanks would be the same as any other AAS standards.  Prepare an acid solution to match that of your sample and determine if and how much of each metal is present in your acid.  It is also good just for reference to run a blank of the water you are using.  When preparing the standards for the individual metals read some of the literature to determine the best method (ashing temp, atomization temps. etc.).  In many cases better results are obtained with the use of a matrix modifier.  I would read some literature and there should be many examples of this type of work.
844501
call a ronald mcdonald  house and find out - I once called a dialysis center because i had always heard to colect them for dialysis patients - the center didn't know anything unless people were selling them for aluminum
281985
http://www.garp.com/frmexam/BuyStudyMaterials.asp