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339261

Sigma-Aldrich

Hydrofluoric acid

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

Sinónimos:

HF

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About This Item

Fórmula empírica (notación de Hill):
HF
Número de CAS:
7664-39-3
Peso molecular:
20.01
MDL number:
MFCD00011346
UNSPSC Code:
12352106
PubChem Substance ID:
329754538
NACRES:
NA.21

vapor density

1.27 (vs air)
1.27 (vs air)

Quality Level

200

vapor pressure

25 mmHg ( 20 °C)

assay

≥99.99% trace metals basis

form

liquid

concentration

48 wt. % in H2O

density

1.15 g/mL at 25 °C (lit.)

SMILES string

[H+].[F-]

InChI

1S/FH/h1H

InChI key

KRHYYFGTRYWZRS-UHFFFAOYSA-N

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General description

Hydrofluoric acid (HF) is the 48% solution of HF in water. It is weakly acidic in nature. Aqueous HF is mostly used in etching silicon in semiconductors and producing inorganic fluoride compounds. HF can also be used as fluorinating and deprotecting agent. As fluorination agent it also forms complexes with organic bases.

Application

Hydrofluoric acid is used:
  • To compose the electrolyte for the synthesis of TiO2 nanotube arrays.
  • As etchant for the glass fibers.
  • As capping reagent for the synthesis of anatase TiO2 nanocrystals/nanosheets.

pictograms

Skull and crossbonesCorrosion
GHS06,GHS05

signalword

Danger

Hazard Classifications

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

Storage Class

6.1B - Non-combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

wgk_germany

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificados de análisis (COA)

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Anatase TiO2 nanosheet: an ideal host structure for fast and efficient lithium insertion/extraction.
Chen JS and Lou XW.
Electrochemical Communications, 11(12), 2332-2335 (2009)
Highly-ordered TiO2 nanotube arrays up to 220μm in length: use in water photoelectrolysis and dye-sensitized solar cells.
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Nanotechnology, 18(6), 065707-065707 (2007)
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