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695068

Sigma-Aldrich

Hydrofluoric acid

ACS reagent, 48%

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Synonym(s):
HF
Empirical Formula (Hill Notation):
HF
CAS Number:
Molecular Weight:
20.01
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

grade

ACS reagent

Quality Level

vapor density

1.27 (vs air)

vapor pressure

25 mmHg ( 20 °C)

Assay

48%

form

liquid

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

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This Item
339261
Hydrofluoric acid ACS reagent, 48%

Sigma-Aldrich

695068

Hydrofluoric acid

Hydrofluoric acid 48 wt. % in H2O, ≥99.99% trace metals basis

Sigma-Aldrich

339261

Hydrofluoric acid

vapor density

1.27 (vs air)

vapor density

1.27 (vs air)

vapor pressure

25 mmHg ( 20 °C)

vapor pressure

25 mmHg ( 20 °C)

assay

48%

assay

≥99.99% trace metals basis

form

liquid

form

liquid

density

1.15 g/mL at 25 °C (lit.)

density

1.15 g/mL at 25 °C (lit.)

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.
It can also be used as a catalyst for the amidation of carboxylic acids with amines to synthesize amides.

Pictograms

CorrosionSkull and crossbones

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 1 Dermal - Acute Tox. 2 Inhalation - Acute Tox. 2 Oral - Eye Dam. 1 - Skin Corr. 1A

Storage Class Code

6.1A - Combustible, acute toxic Cat. 1 and 2 / very toxic hazardous materials

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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