Ammonium Bifluoride
White needle-like crystals, deliquescent and prone to caking; soluble in water, slightly soluble in alcohol. The aqueous solution is acidic and attacks glass. Decomposes into ammonia and hydrogen fluoride on heating.
Ammonium bifluoride is ANFA's traditional export flagship, produced to HG/T 3586. Export grade assay is held consistently above 98% with loss on drying below 1.5%, shipping regularly to Southeast Asia, the Middle East, Europe and South America. It serves as a key fluorinating agent in glass etching, metal surface treatment, boiler cleaning and rare earth extraction.
International trade names: Bifluoruro de amonio (Spanish), Bifluoreto de amônio (Portuguese), Бифторид аммония (Russian). Overseas buyers frequently search for this product under these local-language names.
Specification (HG/T 3586)
| Item | Export | Premium | Grade A |
|---|---|---|---|
| NH₄HF₂ content (dry basis) | ≥ 98.0% | ≥ 97.0% | ≥ 95.0% |
| Loss on drying | ≤ 1.5% | ≤ 3.0% | ≤ 5.0% |
| Residue on ignition | ≤ 0.2% | ≤ 0.2% | ≤ 0.2% |
| Sulphate (as SO₄) | ≤ 0.1% | ≤ 0.1% | ≤ 0.1% |
| Ammonium fluosilicate | ≤ 2.0% | ≤ 2.0% | ≤ 4.0% |
Typical values, configurable on request
Safety & handling
Class 8 corrosive; releases HF on contact with acids or heat. Store cool and dry, away from glass and bare metal containers.
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