Hydrogen Fluoride (HF)
HF Aqueous 49% Solution
aqueous 49% Solution
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Overview
Our 49% is a clear, colorless, corrosive liquid with a sharp, stinging odor. It is non-fuming,
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.
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.
Typical Properties
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
- Performance Function : Feedstock
- Concentration : 49.00% acid|51.00% water
- 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
- Synonyms : Aqueous HF|HF|HF Acid
- Grade : Aqueous 49% Solution
- pH : 3.4|Acidic
- Chemical Composition : 49% HF in H2O by weight
- Solubility in Water : Completely miscible
- Melting Point/Range : -35 °C
- Boiling Point/Range : 105 °C at 1,013 hPa
- Vapor Pressure : 101 hPa at 50°C (122°F)
- Physical form : Liquid
- Flashpoint : Not flammable
- Formula : HF
- Density : 1.17 g/cm3 at 20 °C
- Color : Colorless
- Odor : Sharp stinging
- Incompatible Materials : See SDS
- Ignition Temperature : Not applicable
- Chemical Stability : Stable under normal conditions
- Evaporation Rate : Not applicable
- Corrosivity : Corrosive to metals
- Chemical Class : 8 (6.1)
- Packing Group : II
- UN Number : 1790
Sales Sheet
Name
Description
File Size
Date
Size
Solstice expertise can reduce risk, downtown, and costs
application/pdf 251.19 KB
5/2/2026
251.19 KB
For Hydrofluoric Acid Exposure
application/pdf 344.71 KB
5/21/2026
344.71 KB
Solstice expertise can help reduce the stress of transportation emergencies by supporting remediation efforts
application/pdf 1.85 MB
5/2/2026
1.85 MB
Practice HF Railcar Capping Skills Using Solstice's AHF Training Prop
application/pdf 1.45 MB
5/2/2026
1.45 MB
Our Driver Teams Use Advanced Fleet Technology
application/pdf 2.03 MB
5/2/2026
2.03 MB
Emergency Preparedness through realistic training
application/pdf 2.4 MB
5/2/2026
2.4 MB
In-Person & Online Seminars
application/pdf 3.38 MB
5/2/2026
3.38 MB
Solstice is dedicated to the safe production, handling, and transportation of hydrofluoric acid (HF)
application/pdf 2.5 MB
5/2/2026
2.5 MB
Hands-on HF Capping Kit Training Provided by Solstice
application/pdf 1.25 MB
5/2/2026
1.25 MB
Solstice offers intensive threeday HazMat emergency response training for HF customers
application/pdf 1.98 MB
5/2/2026
1.98 MB
Technical Note
Name
Description
File Size
Date
Size
Typical Alkaline Material (Bases)
application/pdf 237.93 KB
5/2/2026
237.93 KB
Data Sheet
Name
Description
File Size
Date
Size
Technical Data Sheet
application/pdf 2.86 MB
5/22/2026
2.86 MB
Technical Data Sheet
application/pdf 66.37 KB
5/22/2026
66.37 KB
Safety Data Sheet
application/pdf 236.39 KB
6/3/2026
236.39 KB
Name
Description
File Size
Date
Size
Solstice expertise can reduce risk, downtown, and costs
application/pdf 251.19 KB
5/2/2026
251.19 KB
Technical Data Sheet
application/pdf 2.86 MB
5/22/2026
2.86 MB
For Hydrofluoric Acid Exposure
application/pdf 344.71 KB
5/21/2026
344.71 KB
Solstice expertise can help reduce the stress of transportation emergencies by supporting remediation efforts
application/pdf 1.85 MB
5/2/2026
1.85 MB
Practice HF Railcar Capping Skills Using Solstice's AHF Training Prop
application/pdf 1.45 MB
5/2/2026
1.45 MB
Our Driver Teams Use Advanced Fleet Technology
application/pdf 2.03 MB
5/2/2026
2.03 MB
Emergency Preparedness through realistic training
application/pdf 2.4 MB
5/2/2026
2.4 MB
In-Person & Online Seminars
application/pdf 3.38 MB
5/2/2026
3.38 MB
Solstice is dedicated to the safe production, handling, and transportation of hydrofluoric acid (HF)
application/pdf 2.5 MB
5/2/2026
2.5 MB
Technical Data Sheet
application/pdf 66.37 KB
5/22/2026
66.37 KB
Hands-on HF Capping Kit Training Provided by Solstice
application/pdf 1.25 MB
5/2/2026
1.25 MB
Safety Data Sheet
application/pdf 236.39 KB
6/3/2026
236.39 KB
Typical Alkaline Material (Bases)
application/pdf 237.93 KB
5/2/2026
237.93 KB
Solstice offers intensive threeday HazMat emergency response training for HF customers
application/pdf 1.98 MB
5/2/2026
1.98 MB
Name
Description
File Size
Date
Size
Solstice expertise can reduce risk, downtown, and costs
251.19 KB
5/2/2026
Solstice expertise can help reduce the stress of transportation emergencies by supporting remediation efforts
1.85 MB
5/2/2026
Practice HF Railcar Capping Skills Using Solstice's AHF Training Prop
1.45 MB
5/2/2026
Solstice is dedicated to the safe production, handling, and transportation of hydrofluoric acid (HF)
2.5 MB
5/2/2026
Hands-on HF Capping Kit Training Provided by Solstice
1.25 MB
5/2/2026
Solstice offers intensive threeday HazMat emergency response training for HF customers
1.98 MB
5/2/2026
