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Documenti fondamentali

40211

Sigma-Aldrich

Hydrofluoric acid

40-41%

Sinonimo/i:

HF

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About This Item

Formula empirica (notazione di Hill):
HF
Numero CAS:
Peso molecolare:
20.01
Numero CE:
Numero MDL:
Codice UNSPSC:
12352300
ID PubChem:
Prezzi e disponibilità al momento non sono disponibili

Densità del vapore

1.27 (vs air)

Tensione di vapore

25 mmHg ( 20 °C)

Saggio

40-41%

CdA

specification on request

Densità

1.15 g/mL at 25 °C (lit.)

Stringa SMILE

[H+].[F-]

InChI

1S/FH/h1H
KRHYYFGTRYWZRS-UHFFFAOYSA-N

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Descrizione generale

HF is a colorless inorganic acid. Hydrogen fluoride may be formed by reacting calcium fluoride and sulfuric acid at 200oC. The fluoride in the acid has very high affinity to silicon, making it useful in etching or removal of silicon.[1]

Applicazioni

Industrial uses of HF include etching or polishing glass, ceramics and silicon surfaces.[1] HF may be used to etch silica capillaries for it behave as a filter and an integrated nanofluidic device for the stacking of DNA and proteins.[2] Dentin and ceramic inlays may be etched with HF for better adhesive bonding.[3][4] Nanohydroxyapatite was etched with 0.5%HF prior to measuring its morphological and mechanical properties.[5]

Pittogrammi

Skull and crossbonesCorrosion

Avvertenze

Danger

Indicazioni di pericolo

Classi di pericolo

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

Codice della classe di stoccaggio

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

Classe di pericolosità dell'acqua (WGK)

WGK 2

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable


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Ian Ford et al.
International journal of cardiology, 184, 163-169 (2015-02-24)
We identified easily obtained baseline characteristics associated with outcomes in patients with chronic heart failure (HF) and elevated heart rate (HR) receiving contemporary guideline-recommended therapy in the SHIFT trial, and used them to develop a prognostic model. We selected the
Faiez Zannad et al.
European journal of heart failure, 17(7), 735-742 (2015-04-29)
Thrombin is a critical element of crosstalk between pathways contributing to worsening of established heart failure (HF). The aim of this study is to explore the efficacy and safety of rivaroxaban 2.5 mg bid compared with placebo (with standard care) after
Philip J Millar et al.
Circulation, 131(5), 459-468 (2014-12-04)
Muscle sympathetic activation in heart failure with reduced ejection fraction (HFrEF) has been attributed, on the basis of multiunit recordings, to attenuated inhibitory feedback from stretch-sensitive cardiopulmonary mechanoreceptors. However, such preparations integrate 2 populations of single units exhibiting directionally opposite
Nicolas Vodovar et al.
JACC. Heart failure, 3(8), 629-636 (2015-08-08)
This study sought to hypothesize that elevated B-type natriuretic peptide (BNP) could act as an endogenous neprilysin inhibitor. A hallmark of acute decompensated heart failure (ADHF) is the overproduction of natriuretic peptides (NPs) by stretched cardiomyocytes. Various strategies have been
Zhi-Yong Wu et al.
Analytical chemistry, 84(16), 7085-7091 (2012-08-03)
Better understanding of the mechanism is important for exploring the potentials of a preconcentration method. In this work, we show for the first time that the HF etched porous junction on a fused silica capillary behaves not only as a

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