| Classification | Halide (Except Chloride) |
| Type | Ammonium Bifluoride |
| CAS No. | 1341-49-7 |
| Place of Origin | Shandong, China (Mainland) |
| Grade Standard | Reagent Grade |
| Purity | 98% |
| colour | colorless or white |
Molecular formula:NH4HF2
| Ammonium hydrogen fluoride | ||
| Molecular formula:NH4HF2 | ||
| Molecular weight:57.04 | ||
| Physicochemical properties: | ||
| This product is rhombic or flake crystal of white or colorless,and its relative density is 1.52.At -14.8-126.1,there isn't hydrate in NH4HF2-H2O system.It is acidy and easy to deliquesce in the air,and it slightly dissolves in alcohol. It easily dissolves in cold water and resolves in hot water.It's aqueous solution is acidic.It can sublimate in high temperature and corrode glass. It is poisonous and corrosive to the skin. | ||
| Technical specifications: | ||
| Chemical reagent NH4HF2 GB/T1278-1994 | ||
| ITEM | A.P | C.P |
| (NH4HF2)content % ≥ | 98.0 | 97.0 |
| Ignition residue (sulphate)% ≤ | 0.01 | 0.05 |
| Chloride(CL) % ≤ | 0.001 | 0.005 |
| Sulphate(SO4) % ≤ | 0.005 | 0.01 |
| Fluosilicate(SiF6) % ≤ | 0.2 | 0.5 |
| Fe % ≤ | 0.001 | 0.005 |
| heavy metal (Pb) % ≤ | 0.002 | 0.005 |
| Industry NH4HF2 Q/01GJH009-2001 | ||
| ITEM | INDEX | |
| Premium Grade | First Grade | |
| (NH4HF2) content % ≥ | 97.0 | 95.0 |
| Loss on drying % ≤ | 3.0 | 5.0 |
| Ignition residue % ≤ | 0.2 | 0.2 |
| Sulphate(SO4) % ≤ | 0.1 | 0.1 |
| Ammonium fluorosilicate (NH4)2Si6F % ≤ | 2.0 | 4.0 |
| Package ,Storage and Transportation: | ||
| This product is packaged in plastic bottles or solid material bags lined with polyethylene plastic film.It should be stored in dry warehouses,and the temperature shouldn't exceed 50.It must avoid breakage, contamination and moisture.In the transport, we must take measures to prevent rain and snow and thermal insulation. | ||
| Appliction: | ||
| chemical reagent,glass etchant(usually used with HF),hakko kogyo disinfectant and antiseptic,oxidation of ammonium and ammonium solvent and silicon steel surface treatment agent.It's also used for manufacturing ceramics and magnesium alloy. | ||