■ PHYSICAL PROPERTIES
NO. | Item | Properties |
1 | Chemical name | Hydrofluoric Acid |
2 | Molecular formula | HF |
3 | Molecular weight | 20.01 |
4 | Boiling point,℃ | 19.50 |
5 | Melting point,℃ | -83.60 |
6 | Vapor pressure | 53.32 |
7 | Critical temperature,℃ | 188.00 |
8 | Critical pressure,Kpa | 6.48 |
| 9 | Critical density,g/cm3 | 0.29 |
■ TECHNICAL INDEX
NO. | Item | Excellent Grade | First Grade | Qualified | ||||
1 | F-40 | F-40 | F-55 | F-60 | F-40 | F-55 | F-60 | |
2 | Purity | ≥40% | ≥40% | ≥55% | ≥60% | ≥40% | ≥55% | ≥60% |
3 | H2SiF6 | ≤0.02% | ≤0.02% | ≤0.5% | ≤0.5% | ≤0.6% | ≤1% | ≤1% |
4 | Nonvolatile acid [based on H2SO4] | ≤0.02% | ≤0.05% | ≤0.08% | ≤0.1% | ≤0.6% | ≤0.8% | ≤1% |
6 | Fe | ≤0.005% | ≤0.01% | ── | ── | ── | ── | ── |
■ APPLICATION
1.Glass etchant.
2.Metal-clean.
3.The treatment of the surface of metal.
■ PACKING AND STORAGE
25kg drum, 230kg steel drum or IBC. As customer’s requirement
Stored in a storehouse with shed, and kept away from sunlight. Strictly forbid storing it with combustibles and
explosives together.