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.
Specifications
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
- Application : Chemical Derivatives|Chemical Milling|Glass Etching/Frosting|Metal Pickling|Quartz Purification|Rare Metal Processing
- Synonyms : Aqueous HF|HF|HF Acid
- Performance Function : Feedstock
- Grade : Aqueous 49% Solution
- Concentration : 49.00% acid|51.00% water
- CAS Number : Hydrofluoric Acid: 7664-39-3|Water: 7732-18-5
- pH : 3.4|Acidic
- Vapor Pressure : 101 hPa at 50°C (122°F)
- Solubility in Water : Completely miscible
- Physical form : Liquid
- Odor : Sharp stinging
- Melting Point/Range : -35 °C
- Formula : HF
- Flashpoint : Not flammable
- Density : 1.17 g/cm3 at 20 °C
- Color : Colorless
- Chemical Composition : 49% HF in H2O by weight
- Boiling Point/Range : 105 °C at 1,013 hPa
- Incompatible Materials : See SDS
- Ignition Temperature : Not applicable
- Evaporation Rate : Not applicable
- Corrosivity : Corrosive to metals
- Chemical Stability : Stable under normal conditions
- UN Number : 1790
- Packing Group : II
- Chemical Class : 8 (6.1)
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
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 65.2 KB
5/2/2026
65.2 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
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 65.2 KB
5/2/2026
65.2 KB
Hands-on HF Capping Kit Training Provided by Solstice
application/pdf 1.25 MB
5/2/2026
1.25 MB
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
