258202

Sigma-Aldrich

Hafnium(IV) chloride

98%

Linear Formula:
HfCl4
CAS Number:
Molecular Weight:
320.30
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.23
Pricing and availability is not currently available.

Quality Level

vapor pressure

1 mmHg ( 190 °C)

assay

98%

form

powder

mp

432 °C (lit.)

solubility

H2O: decomposes(lit.)

SMILES string

Cl[Hf](Cl)(Cl)Cl

InChI

1S/4ClH.Hf/h4*1H;/q;;;;+4/p-4

InChI key

PDPJQWYGJJBYLF-UHFFFAOYSA-J

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Application

Hafnium (IV) chloride can be used to catalyze the direct ester condensation of carboxylic acids with alcohols effectively.

Packaging

10, 50 g in glass bottle

Pictograms

Corrosion

Signal Word

Danger

Hazard Statements

Precautionary Statements

Hazard Codes

C

Risk Statement

34

Safety Statement

26-36/37/39-45

RIDADR

UN 3260 8 / PGII

WGK Germany

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis
Certificate of Origin
Direct condensation of carboxylic acids with alcohols catalyzed by hafnium (IV) salts.
Ishihara K, et al.
Science, 290.5494, 1140-1142 (2000)
Visualization of the cytoskeletal elements in tissue culture cells by bloc-staining with hafnium chloride after rapid freezing and freeze-substitution fixation.
T Hatae et al.
Journal of electron microscopy, 33(2), 186-190 (1984-01-01)
Guoguang Liu et al.
Biomacromolecules, 9(3), 949-953 (2008-02-15)
The feasibility of a previously established method based on ozonolysis and hydrogenation reactions for the production of 9-hydroxynonanoic acid from oleic acid has been demonstrated. Metal catalyzed lactonization conditions have been used to convert 9-hydroxynonanoic acid into 1,11-dioxacycloicosane-2,12-dione, which is...
Lutz Ackermann et al.
Organic & biomolecular chemistry, 5(12), 1975-1978 (2007-06-07)
Two distinct economical catalysts for intramolecular hydroaminations of electronically unactivated alkenes with basic amines are described, which are based on (a) group 4 metal halides under basic reaction conditions or (b) Brønsted-acid organocatalysts.
Articles
In the last two decades, a new method termed solid-state metathesis (SSM) has been developed to synthesize compounds that are often difficult to produce conventionally.
Read More

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