31146

Acido borico

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

• Formula condensata: H₃BO₃
• Numero CAS: 10043-35-3
• Peso molecolare: 61.83
• Numero CE: 233-139-2
• Numero MDL: MFCD00011337
• Codice UNSPSC: 12352106
• eCl@ss: 38120104
• ID PubChem: 329753669
• NACRES: NA.21

Proprietà

• Grado: ACS reagent; puriss. p.a.
• Livello qualitativo: 200
• agenzia: USP/NF; reag. ISO; reag. Ph. Eur.
• Tensione di vapore: 2.6 mmHg ( 20 °C)
• Saggio: ≥99.8%
• Stato: powder or crystals
• Impurezze: ≤0.005% insoluble in methanol; ≤0.05% with methanol-HCl non-volat. matter
• pH: 3.6-4.0 (20 °C, 4%)
• Punto di fusione: 160 °C (dec.) (lit.)
• Solubilità: water: soluble
• Densità: 1.440 g/cm³
• Anioni in tracce: chloride (Cl^-): ≤3 mg/kg; phosphate (PO₄^3-): ≤5 mg/kg; sulfate (SO₄^2-): ≤5 mg/kg
• Cationi in tracce: 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
• Stringa SMILE: OB(O)O
• InChI: 1S/BH3O3/c2-1(3)4/h2-4H; KGBXLFKZBHKPEV-UHFFFAOYSA-N

Descrizione

Descrizione generale

Boric acid can be used as a Lewis acid catalyst in organic synthesis to facilitate various organic reactions, including dehydration, hydrolysis, decarboxylation, and condensation reactions. It produces different borate anions and salts and can react with alcohols to produce borate esters. It is also used as a buffering agent and pH adjuster.

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.

Applicazioni

Boric acid can be used as a precursor to synthesize boron carbon oxynitride thin films by the atmospheric pressure chemical vapor deposition (APCVD) method using carbon-rich methane and nitrogen-rich ammonia.

Informazioni sulla sicurezza

• Pittogrammi: GHS08
• Avvertenze: Danger
• Indicazioni di pericolo: H360FD
• Consigli di prudenza: P201 - P202 - P280 - P308 + P313 - P405 - P501
• Classi di pericolo: Repr. 1B
• Codice della classe di stoccaggio: 6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
• Classe di pericolosità dell'acqua (WGK): WGK 1
• Punto d’infiammabilità (°F): Not applicable
• Punto d’infiammabilità (°C): Not applicable