Description
Boric Acid 99.9% Electronic Grade
Boric Acid 99.9% Electronic Grade (CAS 10043-35-3, molecular formula H3BO3) is a process chemical for electronics and metal finishing, where trace metal content and particle contamination matter as much as headline assay. China Chemicals supplies it at 99.9% min in pack sizes from 1 kg through to 1000 kg Bulk Bag, so laboratory trial quantities and full production volumes can be sourced from the same specification.
It is also traded as Orthoboric Acid, Boracic Acid, Hydrogen Borate. Every consignment ships with a batch-specific Certificate of Analysis and the current Safety Data Sheet, and material is stored and picked under stock rotation so you receive product well inside its shelf life.
Typical applications
- Buffering agent in nickel and zinc plating baths
- Borosilicate glass and glass fibre manufacture
- Flux in brazing, welding and metal casting
- Flame retardant in cellulose insulation and timber
- Neutron absorber in nuclear coolant systems
Technical specification
| Chemical name | Boric Acid 99.9% Electronic Grade |
|---|---|
| Synonyms | Orthoboric Acid, Boracic Acid, Hydrogen Borate |
| CAS number | 10043-35-3 |
| Molecular formula | H3BO3 |
| Appearance | White crystalline powder or granules |
| Assay H3BO3 | 99.9% min |
| Sulphate | 0.05% max |
| Chloride | 0.005% max |
| Iron (Fe) | 5 ppm max |
| Heavy metals as Pb | 10 ppm max |
| Water insolubles | 0.005% max |
Values above are typical and are confirmed on the Certificate of Analysis issued against each batch. Tighter specifications can be quoted where a process requires them.
Packaging and supply
Available in 1 kg, 5 kg, 25 kg Bag, 1000 kg Bulk Bag. Bulk, road tanker and export drum quantities are quoted on request, including FOB and CIF terms for international shipment. Pricing shown is per pack in USD, exclusive of freight and any applicable duties.
Handling and safety
Transport classification: Not regulated · Reproductive toxin (category 1B). Store in the original closed container in a cool, well-ventilated area away from incompatible materials, and handle using appropriate personal protective equipment. Read the Safety Data Sheet in full before use — it is issued with every order and is available on request before purchase.
Supply to industry only. Products are sold for legitimate industrial, laboratory and manufacturing use. We may request end-use details and business registration before releasing an order.
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