Hydrogen Fluoride (HF)
Hydrofluoric acid
Aqueous 49% Solution
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
- CAS Number : Hydrofluoric Acid – 7664-39-3|Water – 7732-18-5
- Grade : Aqueous 49% Solution
- Application : Chemical Derivatives|Chemical Milling|Glass Etching/Frosting|Metal Pickling|Quartz Purification|Rare Metal Processing
- Formula : HF
- Color : Colorless
- Density : 1.17 g/cm3 at 20 °C
- Solubility in Water : Completely miscible
- Physical Form : Liquid
- Odor : Sharp stinging
- Flashpoint : Not flammable
- Chemical Composition : 49% HF in H2O by weight
- Boiling Point/Range : 105 °C at 1,013 hPa
- Vapor Pressure : 101 hPa at 50°C (122°F)
- pH : 3.4|Acidic
- Melting Point/Range : -35 °C
- Incompatible Materials : See SDS
- Ignition Temperature : Not applicable
- Evaporation Rate : Not applicable
- Corrosivity : Corrosive to metals
- Chemical Stability : Stable under normal conditions
- Packing Group : II
- UN Number : 1790
- Chemical Class : 8 (6.1)
- Performance Function : Feedstock
- Concentration : 49.00% acid|51.00% water