- Tianqiao District, Jinan City, Shandong Province, China
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Boric acid (MF: BH₃O₃, MW: 61.83) is an important inorganic oxygen-containing acid, occurring naturally in borate minerals such as borax and hard boracite. Industrially, it is predominantly prepared through mineral processing. Its chemical reactivity centres on the hydroxyl group (-OH) and the central boron atom, exhibiting both weak acidity and distinctive chemical activity. It can undergo weak acid reactions, coordination reactions, and more. As a key raw material in inorganic chemistry, it finds extensive applications in glass manufacturing, pharmaceuticals, agriculture, flame retardants, and other fields.
| Item | Specification |
| Melting point | 169°C (dec.) (lit.) |
| Boiling point | 219–220°C (9.7513 mmHg) |
| Density | 1.440 g/cm³ |
| Bulk density | 400–600 kg/m³ |
| Vapor pressure | 2.6 mmHg (20°C) |
| Refractive index | n20/D 1.330–1.340 |
| Acidity coefficient (pKa) | 8.91±0.43 (Predicted) |
| Specific gravity | 1.435 |
| APHA | ≤10 |
| PH | 3.8–4.8 |
| Solubility | Freely soluble in hot water, glycerol, ethanol, methanol and other polar solvents; slightly soluble in diethyl ether, benzene and other non-polar solvents; insoluble in concentrated nitric acid or concentrated sulphuric acid. |
| Stability | Stable at ambient temperature and under dry conditions; resistant to oxidation or decomposition; exhibits slight hygroscopicity. |
Glass and Ceramics Industry:
– Used in manufacturing heat-resistant, hardened glassware such as beakers, test tubes, coffee pots, and microwave-safe tableware.
– Employed in producing high-precision optical components including camera lenses, telescope lenses, and optical prisms.
– Serves as a fluxing agent and network-forming agent in ceramic glazes.
Pharmaceutical and Cosmetic Applications:
– Employed for cleansing and disinfecting skin and mucous membranes, treating minor burns, scalds, eczema, and oral ulcers.
– For chronic skin ulcers and pressure sores, providing dual moisturising and antibacterial effects;
– As an adjunct treatment for otitis externa and otitis media, inhibiting bacterial growth in the ear canal.
Household Care and Preservation:
– For preserving indoor furniture and wooden flooring;
– For flame-retardant treatment of cotton and linen fabrics.
As a water-soluble boron fertiliser, used in agriculture to prevent boron deficiency in crops;
Chemical and Metallurgical Applications:
– As a raw material for synthesising boron compounds such as sodium borohydride, zinc borate, and boron nitride;
– Boric acid solutions serve as fluxing agents in metal welding;
– Used to adjust pH levels in electroplating solutions.
Jinan Jinbang Chemical Co., Ltd., strategically located within the New Materials Industrial Park in Tianqiao District, Jinan City, Shandong Province, stands as a prominent chemical innovator since its establishment in 2015. Operating from a modern, expansive 37,500 m² manufacturing facility, we are dedicated to the research & development, production, and global distribution of high-performance chemical solutions.
We are always committed to delivering optimal chemical solutions for all application scenarios.
