From what i know is boric acid -------->methanoic acid------>borin oxide.

 

But what is the condition and reagents are needed?

 

Pls help me, if can in details~

I encountered this a while back whislt trying to Isolate Boron the element from boric acid.

this is how: "The oxide is made by melting boric acid, B(OH)3"

taken from: http://www.webelements.com/webelements/elements/text/B/key.html

 

hope that helps a little

ya just melt it. and wen its melted u can make like fibers out of it

The boric acid will change into several different acids although fizzy the whole time. The sparkling action is the boric acid freeing the moisture from itself. Whatever used to boric acid will finally down to form a clear liquid glass at about 700c.

 

If you have a strong torch you can heat it and melt it. It will form a hard, glassy substance. Which is your boric oxide. Then if you crush it, you can mix it with Mg or Al and make a thermite for isolating Boron.