Hydrogen Fluoride (HF)
Hydrofluoric acid
Aqueous 49% Solution
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The 49% solution is highly hazardous and needs to be handled and used with rigorous safety precautions. Liquid exposure can cause severe burns to all parts of the body. Specialized medical treatment is required for any exposure to 49% HF.
General Information
- Application
- Chemical Derivatives
- Chemical Milling
- Glass Etching/Frosting
- Metal Pickling
- Quartz Purification
- Rare Metal Processing
- CAS Number
- Hydrofluoric Acid: 7664-39-3
- Water: 7732-18-5
- Concentration
- 49.00% acid
- 51.00% water
- Grade
- Aqueous 49% Solution
- Performance Function
- Feedstock
- Synonyms
- Aqueous HF
- HF
- HF Acid
Physical Properties
- Boiling Point/Range
- 105 °C at 1,013 hPa
- Chemical Composition
- 49% HF in H2O by weight
- Color
- Colorless
- Density
- 1.17 g/cm3 at 20 °C
- Flashpoint
- Not flammable
- Formula
- HF
- Melting Point/Range
- -35 °C
- Odor
- Sharp stinging
- pH
- 3.4
- Acidic
- Physical Form
- Liquid
- Solubility in Water
- Completely miscible
- Vapor Pressure
- 101 hPa at 50°C (122°F)
Safety Information
- Chemical Stability
- Stable under normal conditions
- Corrosivity
- Corrosive to metals
- Evaporation Rate
- Not applicable
- Ignition Temperature
- Not applicable
- Incompatible Materials
- See SDS
International Transportation
- Chemical Class
- 8 (6.1)
- Packing Group
- II
- UN Number
- 1790
General Information
- Application
- Chemical Derivatives
- Chemical Milling
- Glass Etching/Frosting
- Metal Pickling
- Quartz Purification
- Rare Metal Processing
- CAS Number
- Hydrofluoric Acid: 7664-39-3
- Water: 7732-18-5
- Concentration
- 49.00% acid
- 51.00% water
- Grade
- Aqueous 49% Solution
- Performance Function
- Feedstock
- Synonyms
- Aqueous HF
- HF
- HF Acid
Physical Properties
- Boiling Point/Range
- 105 °C at 1,013 hPa
- Chemical Composition
- 49% HF in H2O by weight
- Color
- Colorless
- Density
- 1.17 g/cm3 at 20 °C
- Flashpoint
- Not flammable
- Formula
- HF
- Melting Point/Range
- -35 °C
- Odor
- Sharp stinging
- pH
- 3.4
- Acidic
- Physical Form
- Liquid
- Solubility in Water
- Completely miscible
- Vapor Pressure
- 101 hPa at 50°C (122°F)
Safety Information
- Chemical Stability
- Stable under normal conditions
- Corrosivity
- Corrosive to metals
- Evaporation Rate
- Not applicable
- Ignition Temperature
- Not applicable
- Incompatible Materials
- See SDS
International Transportation
- Chemical Class
- 8 (6.1)
- Packing Group
- II
- UN Number
- 1790
- Synonyms : Aqueous HF|HF|HF Acid
- Grade : Aqueous 49% Solution
- CAS Number : Hydrofluoric Acid: 7664-39-3|Water: 7732-18-5
- Application : Chemical Derivatives|Chemical Milling|Glass Etching/Frosting|Metal Pickling|Quartz Purification|Rare Metal Processing
- Vapor Pressure : 101 hPa at 50°C (122°F)
- Chemical Composition : 49% HF in H2O by weight
- pH : 3.4|Acidic
- Melting Point/Range : -35 °C
- Boiling Point/Range : 105 °C at 1,013 hPa
- Color : Colorless
- Odor : Sharp stinging
- Flashpoint : Not flammable
- Density : 1.17 g/cm3 at 20 °C
- Physical Form : Liquid
- Formula : HF
- Solubility in Water : Completely miscible
- Corrosivity : Corrosive to metals
- Evaporation Rate : Not applicable
- Chemical Stability : Stable under normal conditions
- Incompatible Materials : See SDS
- Ignition Temperature : Not applicable
- Packing Group : II
- UN Number : 1790
- Chemical Class : 8 (6.1)
- Concentration : 49.00% acid|51.00% water
- Performance Function : Feedstock