Boric Acid
Dongguan Weiqi Chemical Co., Ltd. was established in March 2019, at a time when China's chemical industry was undergoing rapid growth, with increasing demand for chemical products across various sectors. Founded by industry veterans with extensive experience in chemistry, the company is located in Qiaotou Town, Dongguan City, Guangdong Province. Qiaotou's dynamic industrial ecosystem and convenient transportation facilitate raw material procurement and product distribution.
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Boric Acid 25kgAs a trusted global chemical supplier, we offers 25kg Boric Acid, a 99.5%+ pure, white crystalline powder with mild odor, engineered for pest control, wood preservation, flame retardancy, and...read more
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Boric Acid PowderWe proudly offers 25kg boric acid powder, a ultra-pure, versatile chemical engineered for homeowners, manufacturers, and eco-conscious professionals. With its 99.5%+ purity, fine-grain texture,...read more
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Acid BoricWe delivers premium acid boric powder, a safe, high-purity chemical that tackles pests, fire risks, and pH imbalances while keeping costs low and the planet safe.read more
Why choose us
Strict Quality Control
Regular sampling and testing during production help identify any potential quality deviations. Final products undergo rigorous performance and safety tests before delivery. All measures adhere to international quality management standards, ensuring that customers receive only first-class chemical products.
Advanced Facilities
A dedicated R&D laboratory is equipped with sophisticated analytical instruments, enabling our R&D team to conduct in-depth research, develop new formulas, and optimize existing products.
Certificates and Documents
- SGS (Swiss General Standards)
- Hazardous Chemicals Business License
- Non-pharmaceutical Precursor Chemicals Business Filing Certificate (Ether, Acetic Anhydride, Bromine)
- Non-pharmaceutical Precursor Chemicals Business Filing Certificate (Acetone, Toluene, Sulfuric Acid, Potassium Permanganate)
Our Services
We offer free returns and exchanges for quality issues within 30 days, provide SGS inspection reports, and offer long-term discounts to loyal customers.

Boric acid, also called hydrogen borate, boracic acid, orth0boric acid and acidum boricum, is a weak acid of boron often used as an antiseptic, insecticide, flame retardant, neutron absorber, or precursor to other chemical compounds. It has the chemical formula H3BO3 (sometimes written B(OH)3), and exists in the form of colorless crystals or a white powder that dissolves in water. When occurring as a mineral, it is called sassolite.
Appearance: Colourless or white odourless crystalline solid
CAS: 11113-501
MF: Bh3o3
MW: 61.83
Melting point: 160 °C (dec.) (lit.)
Boiling point: 219-220 °C (9.7513 mmHg)
Density: 1.440 g/cm3
Storage temp.: Store at +5°C to +30°C.
|
Item |
Index |
|
|
First grade |
Second grade |
|
|
Boric acid(%) |
≥99.5% |
≥96.5% |
|
Water insolubles(%) |
≤0.05% |
≤0.15% |
|
Sulfate(SO4)(%) |
≤0.10% |
≤0.40% |
|
Chloride(CL)(%) |
≤0.01% |
≤0.05% |
|
Iron(Fe)(%) |
≤0.003% |
≤0.005% |
Application
Glass and fiberglass: Used for the production of optical glass, acid-resistant glass, organoborate glass and other advanced glass and glass fiber, can improve the heat resistance and transparency of glass, improve mechanical strength, shorten the melting time.
Enamel and ceramics: Enamel, ceramic industry for the production of glaze, can reduce the thermal expansion of glaze, reduce the curing temperature of glaze, so as to prevent cracking and deglazing, improve the luster and fastness of products.
Pharmaceutical industry: Used in the production of boric acid ointment, disinfectant, astringent, preservative and so on.
Flame retardant: Adding borate to celluloid material can change its oxidation reaction and promote the formation of "carbonization". It is therefore flame retardant. Boric acid, alone or in combination with borax, has a special effect on reducing the flammability of celluloid insulation, wood, and cotton tires in mattresses.
Metallurgy : It is used as additive and cosolvent in the production of boron steel to make the boron steel have high hardness and good rolling ductility. Boric acid can prevent the surface oxidation of metal welding, brazing and casing welding. It is also the raw material of ferroboron alloy.
Leather: It is used to remove dust from the surface of bare skin and prevent gray spots from occurring on the surface of leather after retanning.
Rust-proof : Boric acid can be used as rust inhibitor, lubricant and thermal oxidation stabilizer. It is added to lubricants, brake fluids, metalworking fluids, water treatment agents and fuel additives.
Binding agent: Boric acid is one of the components in the manufacture of corrugated paper binders, and it is also the adhesive solvent for the manufacture of coolin and dextrin binders. Boric acid greatly improves the strength of wet glue by crosslinking hydroxyl groups.
Nuclear industry : Boron-10 isotope is a highly efficient thermal neutron absorber. It is therefore essential for safety and control systems in nuclear power plants. Special grade (SQ) boric acid is used in the nuclear industry to increase the boron-10 ratio.
Chemical industry: Used in the production of various borates, such as ammonium hydrogen borate, cadmium borotungstate, and so on.
Packaging & Shipping
25kg pp bag, 25 MT/20'FCL .
Also be packed according to customer's needs.
Store closed containers in a cool, dry, well-ventilated area. Avoid exposure to direct sunlight.
Certificates and Documents




As one of the leading boric acid manufacturers and suppliers in China, we warmly welcome you to wholesale bulk boric acid for sale here and get pricelist from our factory. All chemicals are with high quality and low price.
boric acid for sale