Boric acid
SIGALD/31146 - puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., buffer substance, ≥99.8%
CAS Number: 10043-35-3
Empirical Formula (Hill Notation): H3BO3
Molecular Weight: 61.83
EC Number: 233-139-2
MDL Number: MFCD00011337
Linear Formula: H3BO3
Product Type: Chemical
| agency | reag. ISO |
| reag. Ph. Eur. | |
| USP/NF | |
| anion traces | chloride (Cl-): ≤3 mg/kg |
| phosphate (PO43-): ≤5 mg/kg | |
| sulfate (SO42-): ≤5 mg/kg | |
| assay | ≥99.8% |
| 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 | |
| density | 1.440 g/cm3 |
| form | powder or crystals |
| grade | ACS reagent |
| puriss. p.a. | |
| impurities | ≤0.005% insoluble in methanol |
| ≤0.05% with methanol-HCl non-volat. matter | |
| InChI | 1S/BH3O3/c2-1(3)4/h2-4H |
| InChI key | KGBXLFKZBHKPEV-UHFFFAOYSA |
| mp | 160 °C (dec.) (lit.) |
| pH | 3.6-4.0 (20 °C, 4%) |
| Quality Level | 200  |
| SMILES string | OB(O)O |
| solubility | water: soluble |
| vapor pressure | 2.6 mmHg ( 20 °C) |
| Application: | 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. |
| General description: | 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. |
| 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. |
| Symbol |  GHS08 |
| Signal word | Danger |
| Hazard statements | H360FD |
| Precautionary statements | P201 - P202 - P280 - P308 + P313 - P405 - P501 |
| Hazard Codes | T |
| Risk Statements | 60-61 |
| Safety Statements | 53-45 |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 1 |
| Purity | ≥99.8% |
| mp | 160 °C (dec.) (lit.) |
| Density | 1.440 g/cm3 |
| UNSPSC | 12352106 |