Names
IUPAC namesBoric acid
Trihydrooxidoboron
Other names
Orthoboric acid,
Boracic acid,
Sassolite,
Optibor,
Borofax,
Trihydroxyborane,
Boron(III) hydroxide,
Boron Trihydroxide
Identifiers
CAS Number: 10043-35-3
JSmol: Interactive image
ChEBI: CHEBI:33118
ChEMBL: ChEMBL42403
ChemSpider: 7346
ECHA InfoCard: 100.030.114
EC Number: 233-139-2
E number: (preservatives)
KEGG: D01089
PubChem: 7628
UNII: R57ZHV85D4
Properties
Chemical formula: BH3O3
Molar mass: 61.83 g·mol
Appearance: White crystalline solid
Density: 1.435 g/cm
Melting point: 170.9 °C (339.6 °F; 444.0 K)
Boiling point: 300 °C (572 °F; 573 K)
Solubility in water: 2.52 g/100 mL (0 °C)
4.72 g/100 mL (20 °C)
5.7 g/100 mL (25 °C)
19.10 g/100 mL (80 °C)
27.53 g/100 mL (100 °C)
Solubility: alcohols
log : -0.29
K: 9.24, 12.4, 13.3
Magnetic susceptibility: -34.1·10 cm/mol−63
Structure
Molecular shape: Trigonal planar
Dipole moment: Zero
Pharmacology
ATC code: WHOS02AA03
Hazards
Safety data sheet: See:
EU classification:
R-phrases: R60 R61
S-phrases: S53 S45
NFPA 704:
Flash point: Non-flammable
LD
median dose: 2660 mg/kg, oral (rat)
Related compounds
Related compounds: Boron trioxide
Supplementary data page
Structure and
properties: n
Thermodynamic
data: Phase behaviour
Spectral data: UV
Except where otherwise noted, data are given for materials in their(at 25 °C [77 °F], 100 kPa).Except where otherwise noted, data are given for materials in their(at 25 °C [77 °F], 100 kPa).