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| Hydrofluoric acid - Datasheet
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Physical properties
values from literature
| Molecular weight: |
20.01 |
| Appearance: |
colourless liquid |
| Density (20 °C): |
| 71/75 % |
g/m3 |
1.23 |
| Boiling point |
| 71/75 % |
°C |
above 60 |
| When heated, hydrofluoric acid in the higher concentration range separates hydrogen fluoride fumes until azeotropic point at a concentration of 38.2 % HF and a temperature of 112.2 °C is reached, more dilute HF separates water vapor until the azeotropic point is reached. |
| Solubility in water (20 °C): |
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soluble
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Typical analysis
| HF |
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71/75 % |
| H2SO4 |
max. |
0.1 % |
| H2SiF6 |
max. |
0.1 % |
| SO2 |
max. |
0.15 % |
| Fe |
max. |
0.1 % |
| As |
max. |
0.002 % |
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