31146

Boric acid

puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., buffer substance, ≥99.8%

• Linear Formula: H₃BO₃
• CAS Number: 10043-35-3
• Molecular Weight: 61.83
• EC Number: 233-139-2
• MDL number: MFCD00011337
• eCl@ss: 38120104
• PubChem Substance ID: 329753669
• NACRES: NA.21

Properties

• Quality Level: 200
• grade: ACS reagent; puriss. p.a.
• Agency: USP/NF; reag. ISO; reag. Ph. Eur.
• vapor pressure: 2.6 mmHg ( 20 °C)
• assay: ≥99.8%
• form: powder or crystals
• impurities: ≤0.005% insoluble in methanol; ≤0.05% with methanol-HCl non-volat. matter
• pH: 3.6-4.0 (20 °C, 4%)
• mp: 160 °C (dec.) (lit.)
• solubility: water: soluble
• density: 1.440 g/cm³
• anion traces: chloride (Cl^-): ≤3 mg/kg; phosphate (PO₄^3-): ≤5 mg/kg; sulfate (SO₄^2-): ≤5 mg/kg
• cation traces: As: ≤5 mg/kg; Ca: ≤10 mg/kg; Cd: ≤5 mg/kg; Cu: ≤5 mg/kg; Fe: ≤1 mg/kg; Mg: ≤5 mg/kg; Pb: ≤5 mg/kg; Zn: ≤5 mg/kg
• 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 very weak acid, having pH in the range of 3.6-4.0. Coulometric method for the determination of boric acid has been reported.

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