What is Boric acid?
{{Chembox | Watchedfields = changed | verifiedrevid = 476995365 | ImageFileL1_Ref = {{chemboximage|correct|??}} | ImageFileL1 = Boric-acid-2D.png | ImageSizeL1 = 100px | ImageNameL1 = Structural formula | ImageFileR1 = Boric-acid-3D-vdW.png | ImageSizeR1 = 120px | ImageNameR1 = Space-filling model | ImageFile2 = Boric acid.jpg | ImageSize2 = 150px | ImageName2 = Boric acid crystals | IUPACName = Boric acid<br />Trihydrooxidoboron<!-- This second IUPAC name has not been validated --> | OtherNames = Orthoboric acid,<br/>Boracic acid,<br/>Sassolite,<br/>Optibor,<br/>Borofax,<br/>Trihydroxyborane | Section1 = {{Chembox Identifiers | ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} | ChemSpiderID = 7346 | PubChem = 7628 | SMILES1 = B(O)(O)O | ChEMBL_Ref = {{ebicite|correct|EBI}} | ChEMBL = 42403 | StdInChI_Ref = {{stdinchicite|correct|chemspider}} | StdInChI = 1S/BH3O3/c2-1(3)4/h2-4H | StdInChIKey_Ref = {{stdinchicite|correct|chemspider}} | StdInChIKey = KGBXLFKZBHKPEV-UHFFFAOYSA-N | CASNo = 10043-35-3 | CASNo_Ref = {{cascite|correct|CAS}} | ChEBI_Ref = {{ebicite|correct|EBI}} | ChEBI = 33118 | SMILES = OB(O)O | UNII_Ref = {{fdacite|correct|FDA}} | UNII = R57ZHV85D4 | KEGG_Ref = {{keggcite|correct|kegg}} | KEGG = D01089 | InChI=1/BH3O3/c2-1(3)4/h2-4H | InChIKey = KGBXLFKZBHKPEV-UHFFFAOYAI | EINECS = 233-139-2 }} | Section2 = {{Chembox Properties | H = 3 | B = 1 | O = 3 | Appearance = White crystalline solid | Density = 1.435 g/cm<sup>3</sup> | Solubility = 2.52 g/100 mL (0&nbsp;°C) <br> 4.72 g/100 mL (20&nbsp;°C) <br> 5.7 g/100 mL (25&nbsp;°C) <br> 19.10 g/100 mL (80&nbsp;°C) <br> 27.53 g/100 mL (100&nbsp;°C) | SolubleOther = Soluble in lower [[alcohol]]s <br> moderately soluble in [[pyridine]] <br> very slightly soluble in [[acetone]] | Solvent = other solvents | MeltingPtC = 170.9 | BoilingPtC = 300 | pKa = 9.24 (''see text'') }} | Section3 = {{Chembox Structure | MolShape = Trigonal planar | Dipole = Zero }} | Section7 = {{Chembox Hazards |