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It depends on how pure you want it to be, and what you want to do with it. If, say, you are looking for a cheap source of water-soluble boron (for mixing into a formula for killing ants), you can probably pick up a 2 kg box of "20 Mule Team" Borax for about US$2.00 at your local supermarket. Borax should be about 11 % B.
You could probably buy a small bottle of Boric Acid, U.S.P. (a compound meeting all the
purity tests specified in the United States Pharmacopeia) for about US$5.00 at your local pharmacy. Boric Acid is used (diluted in lots of water) as an eye-wash for sore eyes, and the Anhydrous (without any combined water) Boric Acid should be about 17 % B.
If you want the C.P. (chemically pure, "technical" grade), 99.0+% elemental B, 1 g is
offered for sale at US$30.00 here:
https://www.e-reagent.com/cgi-bin/gx.cgi/AppLogic+ufg280disp_pr.ufg280disp_Main?code=W01W0102-0725&next=3&mode=2
Using the Chemical Abstracts Service registration number for Boron, CAS 7440-42-8 to search may help you find a better deal for your purposes.
If you want really, really, really pure Boron, similar to the purity of Silicon used to make
computer chips (before they are "doped" with tiny traces of other elements in specific places to make the transistors), you may be able to find a source who will make it for you for only a few US$100,000.00. Getting the last few impurities out of anything -
even a large single crystal of an element - becomes ridicuously expensive. Any sample of Boron big enough to see will have many atoms of other elements as impurities - most likely a layer of Oxygen from the air on the surface - even if it is "high purity".
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How much is a pound of boron worth?
the average cost of crystalline boron is $5/g.
Is boron is shiny?
Pure boron (a metalloid) is not found in nature. Boron will be combined with something else. Pure boron could be shiny, but will usually be a brown powder when combined with carbon.
Is boron a pure substance or mixture?
pure, its an element
How do you make a pure sample of boron?
you don't. it's boron and nothing else. :)
What shape is a pure boron molecule?
it is round
How much is a pound of boron worth?
the average cost of crystalline boron is $5/g.
Is boron is shiny?
Pure boron (a metalloid) is not found in nature. Boron will be combined with something else. Pure boron could be shiny, but will usually be a brown powder when combined with carbon.
Is boron a pure substance or mixture?
pure, its an element
How do you make a pure sample of boron?
you don't. it's boron and nothing else. :)
Is element boron a pure substance?
no
What is boron's pure element form?
The "pure element form" of boron is a meteorite. Boron isn't very reactive...but since it's formed by cosmic rays it isn't very abundant either.
What are the chemicals of boron?
Boron is a pure element with symbol B and atomic number 5.
What shape is a pure boron molecule?
it is round
Is boron corrosive?
boron gets highly corrosive at high temperatures that's the reason why we easily don't get 100%pure boron
What is the correct formula for boron?
Boron is an element, #5 on the periodic chart....so the formula then for pure Boron would be its chemical symbol "B."
Is boron shiny or dull?
Pure boron (a metalloid) is not found in nature. Boron will be combined with something else. Pure boron could be shiny, but will usually be a brown powder when combined with carbon.
How is boron trifluoride formed?
By the reaction of Pure Boron with Fluorine:2 B + 3 F2 ----> 2 BF3
