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243469

Sigma-Aldrich

Zinc

granular, 20-30 mesh, ACS reagent, ≥99.8%

Synonym(s):

Zn

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About This Item

Empirical Formula (Hill Notation):
Zn
CAS Number:
7440-66-6
Molecular Weight:
65.39
EC Number:
231-175-3
MDL number:
MFCD00011291
UNSPSC Code:
12352300
PubChem Substance ID:
24854618
NACRES:
NA.22

grade

ACS reagent

Quality Level

200

vapor pressure

1 mmHg ( 487 °C)

Assay

≥99.8%

form

granular

reaction suitability

core: zinc
reagent type: catalyst

resistivity

5.8 μΩ-cm, 20°C

particle size

20-30 mesh

bp

907 °C (lit.)

mp

420 °C (lit.)

density

7.133 g/mL at 25 °C (lit.)

cation traces

Fe: ≤0.01%
Pb: ≤0.01%

suitability

passes application test for determination of arsenic (As)

SMILES string

[Zn]

InChI

1S/Zn

InChI key

HCHKCACWOHOZIP-UHFFFAOYSA-N

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General description

Zinc granules are pure metallic zinc in a granular form, they provide a high surface area for increased reactivity. They serve as a reducing agent, catalyst, or precursor for various chemical reactions. Zinc granules are commonly used for synthesis of organometallic compounds. It reacts with organic halides to form alkyl or aryl zinc compounds, which serve as powerful nucleophiles in carbon-carbon bond formations. This reaction, known as the Barbier reaction, enables the introduction of diverse functional groups into organic molecules.Zinc granules also find application in the synthesis of pharmaceuticals and fine chemicals. They can be employed in the reduction of functional groups like nitro, nitrile, or azide to their corresponding amines. Additionally, zinc granules are involved in other carbon-carbon bond forming reactions, such as the Reformatsky reaction and the Simmons-Smith reaction.

Application

Zinc granules can be used to prepare:

  • organozinc reagents commonly used in Negishi or Fukuyama couplings
  • Reformatsky reagents
  • Simmons-Smith reagents

Pictograms

Environment
GHS09

Signal Word

Warning

Hazard Statements

H410

Precautionary Statements

P273 - P391 - P501

Hazard Classifications

Aquatic Acute 1 - Aquatic Chronic 1

Storage Class Code

11 - Combustible Solids

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

EU REACH Annex XVII (Restriction List)

CAS No.

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Certificates of Analysis (COA)

Lot/Batch Number
MKCQ9708
MKCQ2139
MKCP7261
MKCP2016
MKCN1755

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578002

Zinc

Use of activation methods for organozinc reagents.
Erdik E
Tetrahedron, 43(10), 2203-2212 (1987)
A Convenient Procedure for the Preparation of Reactive Zinc for the Reformatsky Reaction.
Bouhel E
Synthetic Communications, 21(1), 133-136 (1991)
A scalable zinc activation procedure using dibal-h in a reformatsky reaction.
Girgis M J
Organic Process Research & Development, 13(6), 1094-1099 (2009)
Cyclopropanation of Electron-deficient Olefins with Dibromomethane by Ni (0) Complexes and Zinc.
Kanai H
Bulletin of the Chemical Society of Japan, 56(4), 1025-1029 (1983)
Cyclopropanes from an Easily Prepared, Highly Active Zinc?Copper Couple, Dibromomethane, and Olefins.
LeGoff E
The Journal of Organic Chemistry, 29(7), 2048-2050 (1964)
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