Boric Acid

Boric Acid, also called hydrogen borate or boracic acid, is a white, water-soluble, mild acid with the formula of H₃B₃. It can occur naturally as the mineral sassolite, in many plants, but it is most prevalent in fruits.

Plastic
Fiberglass manufacturing companies are a major industrial consumer of boric acid.

Additional Notes:
* Insecticide: Boric acid is toxic to a number of insects, as stomach poison, but not humans (in this case), and can be used to get rid of them- check out this site to learn how to get rid of cockroaches! (link: http://pestsoff.com/how-to-get-rid-of-cockroaches/boric-acid-roaches-mistakes/ )
* When combined with methanol (methyl alcohol), the simple boric acid mixture can be set on fire to produce a vibrant green flame. In place of boric acid, some people have also used borax, sodium borate.
* Hydrofluoric acid neutralizer: HF is extremely toxic and dangerous even in small quanities; and in some instances boric acid can act as a hero by compelling the free F anions to combine into complex salts, thereby neutralizing its toxicity.