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Merck
CN

47590

Sigma-Aldrich

Hydrofluoric acid

puriss. p.a., ≥40%

Synonym(s):

HF

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About This Item

Empirical Formula (Hill Notation):
HF
CAS Number:
Molecular Weight:
20.01
MDL number:
UNSPSC Code:
12352106
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vapor density

1.27 (vs air)

vapor pressure

25 mmHg ( 20 °C)

grade

puriss. p.a.

Assay

≥40% (acidimetric)
≥40%

ign. residue

≤0.0005% (as SO4)

density

1.15 g/mL at 25 °C (lit.)

anion traces

chloride (Cl-): ≤1 mg/kg
hexafluorosilicate (SiF62-): ≤50 mg/kg
phosphate (PO43-): ≤0.5 mg/kg
sulfate (SO42-): ≤2 mg/kg
sulfite (SO32-): ≤2 mg/kg

cation traces

Ag: ≤0.02 mg/kg
Al: ≤0.05 mg/kg
As: ≤0.05 mg/kg
Ba: ≤0.1 mg/kg
Bi: ≤0.1 mg/kg
Ca: ≤0.5 mg/kg
Cd: ≤0.01 mg/kg
Co: ≤0.02 mg/kg
Cr: ≤0.02 mg/kg
Cu: ≤0.02 mg/kg
Fe: ≤0.2 mg/kg
K: ≤0.1 mg/kg
Li: ≤0.02 mg/kg
Mg: ≤0.2 mg/kg
Mn: ≤0.05 mg/kg
Mo: ≤0.05 mg/kg
Na: ≤0.2 mg/kg
Ni: ≤0.02 mg/kg
Pb: ≤0.05 mg/kg
Sr: ≤0.02 mg/kg
Tl: ≤0.05 mg/kg
Zn: ≤0.05 mg/kg

SMILES string

[H+].[F-]

InChI

1S/FH/h1H

InChI key

KRHYYFGTRYWZRS-UHFFFAOYSA-N

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Packaging

in plastic bottles

Other Notes

A -D suffix exists for administrative purposes only.
All -D packages are 100% the same product, same quality, same specification as the package sizes previously sold without a -D.

Reagent for the decomposition of silicates

Pictograms

Skull and crossbonesCorrosion

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

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

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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R. Bock
Aufschlussmethoden der anorg. & org. Chemie (1972)
Z. Sulcek et al.
Methods of Decomposition in Inorganic Analysis (1989)
Mette Holme Jung et al.
European journal of heart failure, 16(4), 403-408 (2014-01-28)
Continuous-flow left ventricular assist device (CF-LVAD) implantation is associated with improved quality of life, but the effect on exercise capacity is less well documented. It is uncertain whether a fixed CF-LVAD pump speed, which allows for sufficient circulatory support at
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
Denise C Jarrin et al.
Pediatric cardiology, 36(1), 41-48 (2014-07-25)
Heart rate variability (HRV) is a non-invasive quantitative marker of cardiac autonomic function derived from continuous electrocardiogram (ECG) recordings. Normative HRV values and development factors have not been established in pediatric populations. The objective was to derive referent time- and

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