A key ingredient in aluminium brazing and soldering fluxes. Also used in abrasive wheel manufacturing as a grinding aid and in sand-casting foundry operations. Provides controlled fluoride release at elevated temperatures.

| Purity | 98%+ |
| Appearance | White powder |
| Melting Point | 530°C |
| IUPAC Name | Potassium tetrafluoroborate |
| Molecular Weight | 125.90 g/mol |
| Grades Available | Technical / Abrasives-Grade |
| HS Code (Export) | 28269080 |
| SB Chemicals SKU | SBF-1058 |
Fluxes, bath additives, grain refiners for primary and secondary aluminium production
Flux formulations for aluminium brazing, soldering, and welding electrode coatings
Grinding aids, filler materials, and refractory components
Independent verification of Potassium Fluoborate on third-party scientific databases:
Abrasives-grade KBF₄ is supplied at 98% min KBF₄, water-insoluble matter < 0.5%, free fluoride < 0.1%, particle size D50 ≈ 5–10 µm (fine, free-flowing). Each batch ships with a particle-size distribution and bulk density report.
Yes. Our aluminium-grade KBF₄ is used together with K₂TiF₆ in the manufacture of Al-Ti-B master alloys for foundry grain refinement. Both feedstocks are sized to controlled particle distributions for in-melt dissolution efficiency.
Potassium Fluoborate is supplied in HDPE woven bags with inner LDPE liner (25 kg / 50 kg net), HDPE drums (25 / 50 / 250 kg), and FIBC jumbo bags (500 / 1000 kg) for solid grades. Liquid grades ship in HDPE-lined steel drums (250 kg) or 1000 L IBC totes. Custom packaging — including nitrogen-blanketed, moisture-tight, or food-grade containers — is available on request.
Standard MOQ is 1 metric tonne for solid grades and 200 kg for liquid grades; pilot quantities of 5–25 kg are available for R&D qualification. Stock items dispatch within 7–10 working days from confirmed PO. Made-to-order grades and large export consignments require 3–4 weeks. Indian deliveries by road typically reach 4–7 days; export FCL shipments depend on destination port.
Yes. A 16-section GHS-format SDS is dispatched with every shipment and is also available in advance from marketing@sbfluorochem.com. A batch-specific COA accompanies every consignment and is emailed before dispatch for goods-receipt verification. Test methods follow IS / ASTM / USP / IP / EP as applicable.
SB Chemicals exports to over 35 countries across South-East Asia, the Middle East, Africa, Europe, and the Americas. We hold IEC, GST, and APEDA registrations. Shipments move CIF / FOB / CFR / FCA / EXW from Mundra, Nhava Sheva (JNPT), or Hazira ports. Letter of Credit (LC), TT, and DA terms are accepted subject to credit approval.
Yes. SB Chemicals operates an ISO 9001:2015 certified Quality Management System at the GIDC Vapi facility. Every batch undergoes raw-material testing, in-process control, and final QC release before despatch. Clients are welcome to schedule a third-party audit of the plant.