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Boric acid, also known as boracic acid or orthoboric acid, is a white, crystalline compound with weakly acidic properties. It is commonly used in the production of glass, ceramics, pesticides, fertilizers, and in medical and cosmetic applications. Alfa Chemistry's boric acid is produced to the highest standards of purity, ensuring its effectiveness and safety across diverse uses.
| Items | Specification |
| H3BO3 content | ≥ 99.99% |
| Water insoluble matters | ≤ 0.005% |
| Sulfate (as SO4) | ≤ 0.003% |
| B2O3 | ≥ 56% |
| Chlorides (as Cl) | ≤ 0.0005% |
| Fe | ≤ 0.0004% |
| Average grain size | 80-100 mesh |
Alfa Chemistry's boric acid is used in a variety of industries for different applications:
Alfa Chemistry's boric acid is a critical chemical with diverse applications. By maintaining strict quality control and ensuring proper storage and transportation conditions, Alfa Chemistry guarantees the safe and effective use of boric acid in industries ranging from agriculture to electronics and pharmaceuticals. For more information, please feel free to contact us.
Miyazaki, Tsukasa, et al. Polymer 51.23 (2010): 5539-5549.
Boric acid (BA) acts as an efficient cross-linking agent for PVA films, inhibiting recrystallization during heating and enhancing thermal stability by forming covalent bonds with PVA molecular chains in amorphous regions.
Experimental Protocol: PVA films (degree of polymerization 2400) were immersed in 0–3 wt% BA aqueous solutions for 3 min, dried at 60℃. Thermal and structural properties were characterized via DSC, simultaneous SAXS/WAXD, and ICP-MS. Melting behaviors were analyzed by heating from 50–250℃ at 10℃/min.
Performance Evaluation: BA increased PVA's glass transition temperature (Tg) from 67℃ to 80℃ (3 wt% BA) by slowing molecular motion. SAXS/WAXD confirmed BA inhibited crystallite growth (lateral size: 5.7 nm vs. 11.3 nm in neat PVA) and recrystallization during heating. Crystallinity index decreased from 33% to 20% (1 wt% BA), avoiding strain-induced crystallization. BA cross-links stabilized PVA's lamellar structure, critical for high-performance polarizers. It is a cost-effective additive for tailoring PVA film properties in optical and industrial applications.
Hernández, Maria Florencia, et al. Journal of Thermal Analysis & Calorimetry 139.3 (2020).
Boric acid (H3BO3) acts as an efficient flux agent in clay-based ceramics, reducing sintering temperature, promoting glass phase formation, and improving densification via thermal decomposition to B2O3.
Experimental Protocol: Kaolinitic clay was dry-milled with 1–5 wt% H3BO3, pressed into disks (100 MPa), and sintered at 1100–1300℃ (5℃/min, 60 min soak). Characterizations included TG-DTA, XRD-Rietveld, SEM, and Archimedes porosity/density measurements.
Performance Evaluation: H3BO3 lowered optimal sintering temperature by 100–150℃, increasing glass phase content to 70% (vs. 40% without H3BO3). 3 wt% addition reduced open porosity from 24% to 15% at 1300℃ and formed boron-mullite solid solutions. XRD confirmed quartz/cristobalite dispersion in the glass matrix. Excess (5 wt%) H3BO3 caused rehydration and porosity increase. It enables energy-efficient ceramic production, ideal for tiles and refractories with enhanced microstructure homogeneity.
Zhang, Qiang, et al. Colloids and Surfaces A: Physicochemical and Engineering Aspects 652 (2022): 129802.
The widely used Hummers method for synthesizing graphene oxide (GO) relies on sodium nitrate (NaNO3), which generates toxic nitrogen dioxide gases and leaves hard-to-remove ion residues. Furthermore, the process often leads to over-oxidation, creating excessive carbonyl and carboxyl groups that degrade the final graphene's electrical properties. This study developed a modified Hummers method by substituting sodium nitrate with boric acid (H3BO3). This simple yet strategic replacement fundamentally improved the synthesis chemistry. Boric acid acts as a moderating agent during the intense oxidation of graphite, helping to control the reaction pathway and the types of oxygenated functional groups introduced.
Key Performance Improvements
Implication: Using boric acid as a replacement for sodium nitrate presents a superior, green-chemistry approach to graphene oxide synthesis. It enhances process safety, increases efficiency, and most importantly, produces a higher-quality GO precursor with fewer defects and a more favorable functional group composition.
