Catalog Number
ACM10043353
Category
Ceramic Materials; Electronic Materials
Description
Boric acid is an odorless white solid. Melting point 171°C. Sinks and mixes with water. (USCG, 1999);DryPowder; Liquid; OtherSolid; OtherSolid, Liquid; PelletsLargeCrystals;PelletsLargeCrystals;Colourless, odourless, transparent crystals or white granules or powder; slightly unctuous to the touch; occurs in nature as the mineral sassolite;Solid;ODOURLESS COLOURLESS CRYSTALS OR WHITE POWDER.;Odorless white solid.
Molecular Weight
61.84g/mol
InChI
InChI=1S/BH3O3/c2-1(3)4/h2-4H
InChI Key
KGBXLFKZBHKPEV-UHFFFAOYSA-N
Boiling Point
572 °F at 760 mm Hg (decomposes) (NTP, 1992);572°F
Solubility
water, 2.117e+005 mg/L @ 25 °C (est)
Appearance
Colourless or white odourless crystalline solid
Color/Form
Colorless, transparent crystals or white granules or powder;Colorless triclinic crystals;White waxy triclinic solid plates
Covalently-Bonded Unit Count
1
EC Number
233-139-2;233-139-2;234-343-4
Log P
log Kow = 0.175;0.18;-1.09
MeSH Entry Terms
boric acid;boron oxide hydroxide;orthoboric acid
Monoisotopic Mass
62.017524g/mol
Other Experimental
Slightly unctuous to touch; volatile with steam; solubility in water increased by hydrochloric, citric or tartaric acids;Loses 1.5H₂O at 300 °C;Standard enthalpy of formation: -1094.3 kJ/mol (crystal); -994.1 kJ/mol (gas);pH at 20 °C: 6.1 (0.1% solution); 5.1 (1.0% solution); 3.7 (4.5% solution);Boric acid will form soluble salts with monovalent cations (e.g. Na2B407.1OH20, 6% in water) and insoluble salts with divalent cations (e.g. CaB407.6H20, almost insoluble in cold water).;Henry's Law constant = 2.6X10-12 atm-cum/mole at 25 °C, based on measured water solubility and vapor pressure;Hydroxyl radical reaction rate constant = 4.2X10-13 cu cm/molecule-sec at 25 °C (est)
Stability
Stable at room temperature in closed containers under normal storage and handling conditions.
Storage Conditions
Store at RT.
Vapor Pressure
1.6X10-6 mm Hg at 25 °C (2.136X10-4 Pa); log P (in Pa) = 26.83 - 9094/T where T is deg K;Vapor pressure at 20 °C: negligible