202878

Boric acid

99.999% trace metals basis

• Synonym(s): orthoboric acid
• Linear Formula: H₃BO₃
• CAS Number: 10043-35-3
• Molecular Weight: 61.83
• EC Number: 233-139-2
• MDL number: MFCD00011337
• UNSPSC Code: 12352300
• PubChem Substance ID: 24852125
• NACRES: NA.23

Properties

• vapor pressure: 2.6 mmHg ( 20 °C)
• Assay: 99.999% trace metals basis
• form: crystalline powder
• mp: 160 °C (dec.) (lit.)
• solubility: water: 49.2 g/L at 20 °C
• density: 1.49 g/cm³ at 23 °C
• SMILES string: OB(O)O
• InChI: 1S/BH3O3/c2-1(3)4/h2-4H
• InChI key: KGBXLFKZBHKPEV-UHFFFAOYSA-N

Description

General description

Boric acid is a weak monobasic acid, it accepts OH^- ions, hence is a Lewis acid. In boric acid, B is sp² hybridized, forming a planar triangle structure.The principal oxide of boron, B₂O₃, is obtained as a vitreous solid by dehydration of boric acid at red heat.

Application

Boric acid can have a large scale use in glass industry as flame retardant, in buffer solutions.
Boric acid finds uses in several areas; such as

• In glass fibres, to enhance its resistance and color
• In glazing ceramic wares
• As a condensing agent, chemical intermediate and as a precursor for preparation of borates and other boron based compounds
• As a water coolant in nuclear reactors
• In electrolytic condensers and capacitors 1

Packaging

Packaged in poly bottles

Safety Information

• Pictograms: GHS08
• Signal Word: Danger
• Hazard Statements: H360FD
• Precautionary Statements: P201 - P202 - P280 - P308 + P313 - P405 - P501
• Hazard Classifications: Repr. 1B
• Storage Class Code: 6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves