Fluoroantimonic acid
Synonym(s):Fluoroantimonic acid;Hexafluoroantimonic acid;Hexafluorostibonic acid;Monohydrogen hexafluoroantimonate
- CAS NO.：16950-06-4
- Empirical Formula: F6HSb
- Molecular Weight: 236.76
- MDL number: MFCD00011327
- EINECS: 241-023-8
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-13 11:24:35
What is Fluoroantimonic acid?
Description
Fluoroantimonic acid (HSbF6), the strongest known superacid, is made by combining HF with SbF5. It can be as much as 2 × 1019?times stronger than 100% H2SO4. However, superacids are all equally strong in aqueous solution; other solvents must be used to observe their effects.
Chemical properties
superacid; moisture sensitive [KIR78] [ALD94]
Strongest superacid known
mixture of HF and SbF5 (1:1 is strongest)
Protonate even hydrocarbons to afford carbocations and H2.
2×1019 (20 quintillion) times stronger than 100% sulfuric acid.
Ho values of -31.3
The Uses of Fluoroantimonic acid
Hydrogen hexafluoroantimonate(V) is an excellent medium for the preparation of alkylidene oxonium salts.
Preparation
Fluoroantimonic acid is produced by reacting hydrogen fluoride (HF) with antimony pentafluoride (SbF5).
SbF5+HF→SbF6+HF
General Description
HF/SbF5 may be synthesized by mixing hydrogen fluoride and antimony fluoride.1 Fluoroantimonic acid (HF/SbF5), is a combination of SbF5 and HF. It is the known strongest liquid superacid.
Properties of Fluoroantimonic acid
| Melting point: | 20°C |
| Density | 2.885 g/mL at 25 °C(lit.) |
| vapor pressure | 14 mm Hg ( 18 °C) |
| form | liquid |
| color | yellow to colorless |
| Water Solubility | It is fully miscible with water, soluble in SO2ClF, SO2. |
| Exposure limits | ACGIH: TWA 0.5 mg/m3 NIOSH: IDLH 50 mg/m3; TWA 0.5 mg/m3 |
| CAS DataBase Reference | 16950-06-4(CAS DataBase Reference) |
| EPA Substance Registry System | Antimonate(1-), hexafluoro-, hydrogen, (OC-6-11)- (16950-06-4) |
Safety information for Fluoroantimonic acid
| Signal word | Danger |
| Pictogram(s) |
 Corrosion Corrosives GHS05  Skull and Crossbones Acute Toxicity GHS06  Environment GHS09 |
| GHS Hazard Statements |
H314:Skin corrosion/irritation H411:Hazardous to the aquatic environment, long-term hazard |
| Precautionary Statement Codes |
P260:Do not breathe dust/fume/gas/mist/vapours/spray. P273:Avoid release to the environment. P280:Wear protective gloves/protective clothing/eye protection/face protection. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for Fluoroantimonic acid
New Products
Paroxetine Impurity G/Paroxetine Related Compound E 2-Amino-5-bromo-4-(trifluoromethyl)pyridine（RM for Indian lab) 1-aminocyclopentane carbonitrile, HCl H-D-TRP(FOR)-OH HCL 9-Mesityl-10-methylacridinium perchlorate 3-Amino-3-(4-fluorophenyl)propanoic acid Benzyl (3R,4S)-3-(2-bromoacetyl)-4-ethylpyrrolidine-1-carboxylate Bisacodyl Related Compound C/Bisacodyl EP Impurity C Levothyroxine Beta Hydroxy Impurity Candesartan EP Impurity-F/Candesartan Cilexetil USP Related Compound F / Candesartan Cilexetil N2-Ethyl Impurity / 2H-N2-Ethyl Candesartan Cilexetil Atorvastatin amide impurity/Atorvastatin EP Impurity F(Calcium Salt) Sumatriptan Succinate USP Related Compound C N-[(1S)-1-benzyl-2-({(1R)-3-methyl-1-[(1S,2S,6R,8S)-2,9,9-trimethyl-3,5-dioxa-4-boratricyclo[6.1.1.0~2,6~]dec-4-yl]butyl}amino)-2-oxoethyl]-2-pyrazinecarboxamide N-[4-Cyano-3-(trifluoromethyl)phenyl]-3-[(4-fluorophenyl)thio]-2-hydroxy-2-methylpropionamide L-phenylalanine methyl ester hydrochloride 2,2'-(5-Bromomethyl-1,3-phenylene)-di(2-Methylpropionitrile) tri sodium thio phosphate L-phenylalanine, N-(pyrazinyl carbonyl) methyl ester 3-chlorobenzyl cyanide 2-Chloro Benzylcyanide 3,4 Diethoxy Benzylcyanide 4-Bromo Benzylcyanide 3-Hydroxypropionitrile valeronitrileRelated products of tetrahydrofuran
![PHENYL-[M-(2-HYDROXYTETRADECYLOXY)PHENYL]IODONIUM HEXAFLUOROANTIMONATE](https://img.chemicalbook.in/CAS/GIF/139301-14-7.gif)
You may like
-
Hydrogen hexafluoroantimonate(V) CAS 16950-06-4View Details
16950-06-4 -
Fluoroantimonic acid CAS 16950-06-4View Details
16950-06-4 -
2847776-12-7 Sumatriptan Succinate USP Related Compound C NLT 95%View Details
2847776-12-7 -
1012886-75-7(HCl Salt)/69675-10-1(Freebase) Paroxetine Impurity G/Paroxetine Related Compound E NLT 95%View Details
1012886-75-7(HCl Salt)/69675-10-1(Freebase) -
93-17-4 99%View Details
93-17-4 -
1529-41-5 3-chlorobenzyl cyanide 99%View Details
1529-41-5 -
2856-63-5 99%View Details
2856-63-5 -
3,4 Diethoxy Benzylcyanide 99%View Details
27472-21-5
Statement: All products displayed on this website are only used for non medical purposes such as industrial applications or scientific research, and cannot be used for clinical diagnosis or treatment of humans or animals. They are not medicinal or edible.