695068
Hydrofluoric acid
ACS reagent, 48%
Synonym(s):
HF
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About This Item
Empirical Formula (Hill Notation):
HF
CAS Number:
Molecular Weight:
20.01
NACRES:
NA.21
PubChem Substance ID:
UNSPSC Code:
12352106
EC Number:
231-634-8
MDL number:
Assay:
48%
Form:
liquid
Grade:
ACS reagent
grade
ACS reagent
Quality Level
vapor density
1.27 (vs air)
vapor pressure
25 mmHg ( 20 °C)
assay
48%
form
liquid
impurities
≤0.5 ppm As (Arsenic), ≤0.5 ppm Pb (Lead)
density
1.15 g/mL at 25 °C (lit.)
anion traces
chloride (Cl-): ≤5 ppm, phosphate (PO43-): ≤1 ppm, sulfate, sulfite (as SO42-): ≤5 ppm
cation traces
As: ≤0.05 ppm, Cu: ≤0.1 ppm, Fe: ≤1 ppm, heavy metals (as Pb): ≤0.5 ppm
SMILES string
[H+].[F-]
InChI
1S/FH/h1H
InChI key
KRHYYFGTRYWZRS-UHFFFAOYSA-N
General description
Hydrofluoric acid is a solution of hydrogen fluoride (HF) in water. It is composed of hydrogen and fluoride. Hydrofluoric acid is a colorless and highly corrosive liquid. It is commonly used in the manufacture of hydrocarbons and polishing and conditioning glass. Additionally, it is used as a catalyst and in the synthesis of fluoride-containing compounds, and semiconductors.
Application
Hydrofluoric acid solution can be used as a reagent to synthesize:
- Cyanohydrin alkyl ethers via chiral Bronsted acid-mediated hydrocyanation of vinyl ethers with silyl cyanides.
- N, N-Dimethylaniline hydrochloride salts via Pd-catalyzed Buchwald-Hartwig amination of aryl triflates with dimethylamines.
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signalword
Danger
hcodes
Hazard Classifications
Acute Tox. 1 Dermal - Acute Tox. 2 Inhalation - Acute Tox. 2 Oral - Eye Dam. 1 - Skin Corr. 1A
wgk
WGK 2
flash_point_f
Not applicable
flash_point_c
Not applicable
Storage Class
6.1B - Non-combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials
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Hydrofluoric acid
DW Jr S, et al.
Elsevier's Integrated Review Biochemistry (Second Edition) null
Hydrofluoric acid burns
M H, et al.
Burns : Journal of the International Society For Burn Injuries, 30, 156-159 (2004)
Highly-ordered TiO2 nanotube arrays up to 220μm in length: use in water photoelectrolysis and dye-sensitized solar cells.
Shankar K, et al.
Nanotechnology, 18(6), 065707-065707 (2007)