Shanghai Dingwujin Chemical Co., Ltd. is one of the leading manufacturers and suppliers of boric acid in China. We are committed to the chemical distribution across Central & Eastern Europe and Ukraine. We warmly welcome you to wholesale customized boric acid made in China here from our factory.
Boric Acid
Introduction
Characteristics
|
Molar Weight |
61.831 g/mol |
|
Melting Point |
170.9 °C |
|
Boiling Point |
300 °C |
|
Density |
1.014 g/cm3 |
|
Forms |
White, Crystalline |
Product Grades
Industrial Grade
Widely employed in glass, ceramics, metallurgy, and other major industries. Classified into three quality grades, with core specifications as follows:
● Premium Grade: H₃BO₃ ≥ 99.6%, water insolubles ≤ 0.01%, sulfates ≤ 0.10%, iron ≤ 0.001%.
● First Grade: H₃BO₃ ≥ 99.4%, water insolubles ≤ 0.02%, sulfates ≤ 0.20%, iron ≤ 0.002%.
● Qualified Grade: H₃BO₃ ≥ 99.0%, water insolubles ≤ 0.05%, sulfates ≤ 0.30%, iron ≤ 0.003%.
Reagent Grade
Intended for laboratory analysis and precise formulation, with purity requirements exceeding those of ordinary industrial products:
● Analytical Reagent (AR): H₃BO₃ ≥ 99.5%, water insolubles ≤ 0.005%, heavy metals (as Pb) ≤ 0.001%.
● Chemical Pure (CP): H₃BO₃ ≥ 99.0%, water insolubles ≤ 0.02%, heavy metals (as Pb) ≤ 0.003%.
High-End Specialty Grade (Electronics / Advanced Ceramics)
● Electronics/Semiconductor Grade: Purity 4N (99.99%) or 5N (99.999%). Impurities (Na, Fe, sulfates, etc.) controlled to ppm or ppb levels.
● Advanced Structural Ceramics Grade: Purity ≥ 99.9%. Strict control of low sodium, low chloride, and low magnetic impurities. Exceeds national premium-grade standards.
Uses and Applications
Key applications
- Fabric, Textile and Leather Products
- Preservative
- Agricultural
- Cosmetic Products
- Electronics
- Paint and Coatings
Industries
- Beauty & Personal Care
- Cleaning
- Agriculture
- Energy Services
- Pharma
- Polymers
- CASE & Construction
- Water Treatment
- Food & Nutrition
- Lubricants
Boric Acid Used in the Construction Industry
Boric acid regulates the setting speed of construction materials, and is widely used in cement, gypsum, and related products.
Boric Acid Used in the Glass Industry
Boric acid, added to glass to lower thermal expansion and improve heat resistance, clarity, and strength. Used in optical glass, fibreglass, and acid-resistant varieties.
Boric Acid Used in the Ceramic Industry
● Ceramic Sintering: Low-temperature flux. Lowers firing by 20–60°C. Boosts density, inhibits grain growth. For SiC, Al₂O₃, and other advanced ceramics.
● Glazes & Enamels: Enhances gloss and adhesion. Prevents crazing and chipping.
Boric Acid Used in the Medicine Industry
Boric acid is primarily used in medicine as a mild topical disinfectant and antiseptic, applied for wet compress astringency on the skin, cleansing rinses for the eyes and mucous membranes, and adjunctive antifungal therapy. It is strictly prohibited for oral administration, and both the concentration and the area of application must be carefully controlled.
Boric Acid Used in the Metalworking Fluid Industry
Boric acid as a cutting fluid additive offers lubrication, anti-rust, and antibacterial functions for metalworking fluid systems.
Boric Acid Used in the Wood and Paper Industry
● Flame Retardant: Used in wood and paper production to improve fire resistance.
● Preservative: Protects timber and other susceptible materials from corrosion and decay.
Boric Acid Used in the Agriculture Industry
Boric acid serves as a trace-element fertilizer, replenishing soil boron and enhancing plant development; however, dosage must be rigorously regulated to avoid boron toxicity.
Boric Acid Used in the Metallurgical Industry
● Boron Steel Production: Employed as both an additive and a flux, it increases hardness and rolling ductility, allowing boron steel to serve as a cost-effective alternative to nickel steel.
● Metal Welding: Inhibits surface oxidation in welding, brazing, and soldering operations, thus enhancing joint quality and processing efficiency.
Boric Acid Used in the Electronic Industry
● Flux: Lowers soldering temperature, aids metal bonding, improves quality and efficiency.
● Capacitors & Components: Used in manufacturing capacitors and electronics, boosting performance and stability.
Boric Acid Used in the Textile Industry
Boric acid is used in textile dyeing, finishing, and fireproofing. It softens fibres, boosts elasticity, and improves breathability and moisture uptake.
