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96454

Sigma-Aldrich

Zinc

purum, powder

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Synonym(s):
Zn
Empirical Formula (Hill Notation):
Zn
CAS Number:
Molecular Weight:
65.39
MDL number:
UNSPSC Code:
12352300
PubChem Substance ID:
NACRES:
NA.22

vapor pressure

1 mmHg ( 487 °C)

Quality Level

grade

purum

form

powder

reaction suitability

core: zinc
reagent type: catalyst

resistivity

5.8 μΩ-cm, 20°C

bp

907 °C (lit.)

mp

420 °C (lit.)

density

7.133 g/mL at 25 °C (lit.)

SMILES string

[Zn]

InChI

1S/Zn

InChI key

HCHKCACWOHOZIP-UHFFFAOYSA-N

Application

Zinc powder is generally used as a reagent for the Clemmensen reduction of ketones.
It can also be used as a:
  • Reducing agent in the preparation of graphene from graphene oxide using ultrasonication method.
  • Reducing agent in the oxidation of benzene to phenol by vanadium substituted heteropolyacid catalyst and oxygen oxidant.
  • Reactant in the preparation of alkyl zinc reagents by direct insertion of zinc powder into unactivated alkyl bromides and chlorides.
  • Catalyst in selective Fries rearrangement of acetylated phenols.

Other Notes

Reagent for the Clemmensen reduction of ketones and the Reformansky reaction

Pictograms

Environment

Signal Word

Warning

Hazard Statements

Precautionary Statements

Hazard Classifications

Aquatic Acute 1 - Aquatic Chronic 1

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Zinc

Zinc powder as an effective reducing reagent during liquid-phase oxidation of benzene to phenol using molecular oxygen over V-substituted heteropoly acid catalysts.
Sumimoto S, et al.
Industrial & Engineering Chemistry Research, 45(22), 7444-7450 (2006)
Selective Fries rearrangement catalyzed by zinc powder.
Paul S and Gupta M
Synthesis, 2004(11), 1789-1792 (2004)
M.W. Rathke
Org. React., 22, 423-423 (1975)
Ultrasonication-assisted ultrafast reduction of graphene oxide by zinc powder at room temperature.
Mei X and Ouyang J
Carbon, 49(15), 5389-5397 (2011)
One-pot reductive cleavage of exo-olefin to methylene with a mild ozonolysis-Clemmensen reduction sequence.
Xu S, et al.
Tetrahedron Letters, 51(34), 4534-4537 (2010)

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