Boric Acid
Technical-grade Boric Acid (CAS 10043-35-3), min. 99.5%, supplied wholesale by Zyntex. Boron source for glass fiber, ceramics and enamels, flame retardants, nickel electroplating and micronutrient fertilizers. CoA and SDS with every lot.
Description
Boric Acid Product Overview
Boric acid (H3BO3) is a white, odorless crystalline powder or granule. It dissolves moderately in cold water and much better in hot water. Most of the world’s supply comes from boron minerals mined in Türkiye and the United States.
The largest use of it is in glass. Producers of textile and insulation glass fiber, borosilicate glass and LCD glass add it to lower melting temperature and improve thermal and chemical resistance. Ceramic and enamel producers also use it in glazes and frits. In addition, it protects cellulose insulation and wood against fire, fungi and insects, and boron flame retardants such as Zinc borate build on the same chemistry.
In metal finishing, it buffers nickel electroplating baths. Nuclear power plants add it to cooling water as a neutron absorber, and fertilizer producers use it as a boron micronutrient. Because it is classified as toxic for reproduction in the EU, buyers should check the rules for their application.
Key Applications of Boric Acid
Main application areas:
🧪 Glass and Glass Fiber
Boron source for glass fiber, borosilicate and display glass.
🏺 Ceramics and Enamels
Fluxing agent in glazes, frits and enamels.
🔥 Flame Retardants
Fire and pest protection for cellulose insulation and wood.
⚡ Electroplating
pH buffer in nickel electroplating baths.
Boric Acid Technical Specifications
| Parameter | Standard Value |
|---|---|
| Product Name | Boric Acid (Orthoboric Acid) |
| CAS Number | 10043-35-3 |
| EC Number | 233-139-2 |
| Molecular Formula / Weight | H3BO3 / 61.83 g/mol |
| Assay / Purity (H3BO3) | Min 99.5% (Industrial Pure Grade) |
| Appearance | White granular or crystalline powder |
| Sulfate (SO4) Impurity | Max 0.1% |
| Density | 1.435 g/cm³ |
| Documents | CoA and SDS with every lot |
⚠️ Safety & Handling: May damage fertility or the unborn child (EU classification Repr. 1B). Avoid dust formation and ingestion, and wear gloves, eye protection and dust protection. Store in tightly closed bags in a dry place, away from strong bases and reducing agents. Not for consumer products where restricted. Always consult the Safety Data Sheet (SDS) for full classification and handling instructions.
Frequently Asked Questions
Is boric acid restricted in the EU?
It is classified as toxic for reproduction and is on the REACH Candidate List. Industrial use is allowed with proper controls, but some consumer uses are restricted.
What is the difference between granular and powder grades?
Both have the same chemistry. Granular grades flow better and create less dust, while powder grades dissolve faster.
How can I get a price and documents?
Prices depend on quantity, packaging and destination. Contact us with your required volume to receive a quotation together with the CoA and SDS.
