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339261

Sigma-Aldrich

Hydrofluoric acid

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

Synonyme(s) :

HF

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About This Item

Formule empirique (notation de Hill):
HF
Numéro CAS:
7664-39-3
Poids moléculaire :
20.01
Numéro MDL:
MFCD00011346
Code UNSPSC :
12352106
ID de substance PubChem :
329754538
Nomenclature NACRES :
NA.21

Densité de vapeur

1.27 (vs air)
1.27 (vs air)

Niveau de qualité

200

Pression de vapeur

25 mmHg ( 20 °C)

Pureté

≥99.99% trace metals basis

Forme

liquid

Concentration

48 wt. % in H2O

Densité

1.15 g/mL at 25 °C (lit.)

Chaîne SMILES 

[H+].[F-]

InChI

1S/FH/h1H

Clé InChI

KRHYYFGTRYWZRS-UHFFFAOYSA-N

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Catégories apparentées

Description générale

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.

Pictogrammes

Skull and crossbonesCorrosion
GHS06,GHS05

Mention d'avertissement

Danger

Mentions de danger

H300 + H310 + H330,H314

Classification des risques

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

Code de la classe de stockage

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

Classe de danger pour l'eau (WGK)

WGK 2

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Certificats d'analyse (COA)

Recherchez un Certificats d'analyse (COA) en saisissant le numéro de lot du produit. Les numéros de lot figurent sur l'étiquette du produit après les mots "Lot" ou "Batch".

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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)
Francesca Monticelli et al.
Dental materials : official publication of the Academy of Dental Materials, 22(7), 602-609 (2005-11-18)
To verify the influence of different etching procedures of the post-surface on microtensile bond strength values between fiber posts and composite core materials. 60 DT Light Posts were divided into 10 subgroups using five different chemical surface treatments and two
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)
Eagleson M.
Concise Encyclopedia Chemistry, 508-508 (1994)
Barry Greenberg et al.
JACC. Heart failure, 2(1), 84-92 (2014-03-14)
Impaired cardiac isoform of sarco(endo)plasmic reticulum Ca(2+) ATPase (SERCA2a) activity is a key abnormality in heart failure patients with reduced ejection fraction. The CUPID 2 (Calcium Up-Regulation by Percutaneous Administration of Gene Therapy in Cardiac Disease Phase 2b) trial is
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