Industrial, Optical & Pharmaceutical Grade Boron Oxide (Boric Anhydride) CAS 1303-86-2 Diboron Trioxide Glass Flux, Ceramic Additive & Boron Compound

Boron Oxide (Also known as Boric Anhydride, CAS:1303-86-2,EINECS:215-125-0, HS Code:2810001000) is white crystalline powder or glassy solid. We provide industrial, ceramic and laboratory reagent grades complying with relevant industry standards. The product features strong hygroscopicity, soluble in hot water, ethanol and acids. With excellent fluxing and heat-resistant properties, it is widely used as key raw material for glass, ceramics, metallurgy, chemical synthesis and electronic materials.

Applications
Glass & Ceramic Industry (Core Application)
It serves as high-efficiency flux to lower melting point of raw materials, improve product gloss, hardness and thermal stability. Widely used for producing heat-resistant glass, optical glass, ceramic glazes and refractory ceramics.
Metallurgical Industry
Applied as auxiliary additive in metal smelting and welding. It purifies molten metal, removes impurities and enhances surface performance of metal products. Also used in boron alloy manufacturing.
Chemical Synthesis
Key raw material for producing boric acid, borate salts and boron-containing compounds. Acts as catalyst and reaction auxiliary in fine chemical and organic synthesis processes.
Electronic Industry
Used for manufacturing electronic ceramics, insulating materials and semiconductor auxiliary materials. It ensures stable insulation and reliable performance of electronic components.
Flame Retardant Materials
Added to plastics, coatings and rubber products to endow materials with good flame resistance and smoke suppression effect.
Laboratory & Other Fields
Standard analytical reagent for chemical testing. Also applied in thermal insulation materials, paint additives and pharmaceutical intermediates production.

Product Advantages
✅ Multiple grade options: Meet demands of ceramics, metallurgy, lab and general industrial use
✅ Outstanding fluxing property: Effectively reduce melting temperature and save energy
✅ Low impurity content: Strict quality control for high-end ceramic and electronic applications
✅ Strong hygroscopicity: Good matching performance in compound formulation
✅ Stable chemical property: Inert under normal conditions, not easy to deteriorate
✅ Complete documents: COA, MSDS and relevant certificates provided for export

Packaging & Storage
Standard packaging: 25kg woven bags with inner PE liner or sealed fiber drums. The product is highly hygroscopic. Store in a cool, dry and well-ventilated warehouse. Keep containers tightly sealed to prevent moisture absorption and caking. Keep away from strong acids, alkalis and humid environment. Shelf life is 24 months under proper storage.
Safety Information
Classified as non-hazardous goods for transportation. Fine powder may cause mild irritation to skin, eyes and respiratory tract. Wear dust mask and protective gloves during handling. In case of contact, rinse immediately with plenty of clean water. Complete MSDS and qualification certificates are available upon request.
Customer Inquiry Email

1. 1.A 70,000 ㎡ warehouse (20,000 MT capacity) with moisture-proof and temperature-controlled systems, enabling efficient fulfillment of large-volume orders.
2. 2.Free samples (Ship within 3-7 days) to let you test products at zero trial cost.
3. 3.Transparent lead time for hazardous chemicals: 45–60 days, with clear delivery schedules.
4. 4.Certified with a Hazardous Chemical Business License and ISO certification, ensuring smooth customs clearance.
5. 5.6 packaging options with customizable logos to minimize product loss during transportation.
6. 6.Over 400 chemical SKUs available for one-stop procurement, helping you reduce sourcing costs.