243469

Zinc

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

• Sinônimo(s): Zn
• Fórmula empírica (Notação de Hill): Zn
• Número CAS: 7440-66-6
• Peso molecular: 65.39
• Número CE: 231-175-3
• Número MDL: MFCD00011291
• Código UNSPSC: 12352300
• ID de substância PubChem: 24854618
• NACRES: NA.22

Propriedades

• grau: ACS reagent
• Nível de qualidade: 200
• pressão de vapor: 1 mmHg ( 487 °C)
• Ensaio: ≥99.8%
• forma: granular
• adequação da reação: core: zinc; reagent type: catalyst
• resistividade: 5.8 μΩ-cm, 20°C
• tamanho de partícula: 20-30 mesh
• pb: 907 °C (lit.)
• pf: 420 °C (lit.)
• densidade: 7.133 g/mL at 25 °C (lit.)
• traços de cátion: Fe: ≤0.01%; Pb: ≤0.01%
• adequação: passes application test for determination of arsenic (As)
• cadeia de caracteres SMILES: [Zn]
• InChI: 1S/Zn
• chave InChI: HCHKCACWOHOZIP-UHFFFAOYSA-N

Descrição

Descrição geral

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.

Aplicação

Zinc granules can be used to prepare:

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

Informações de segurança

• Pictogramas: GHS09
• Palavra indicadora: Warning
• Frases de perigo: H410
• Declarações de precaução: P273 - P391 - P501
• Classificações de perigo: Aquatic Acute 1 - Aquatic Chronic 1
• Classe de risco de água (WGK): WGK 2
• Ponto de fulgor (°F): Not applicable
• Ponto de fulgor (°C): Not applicable
• Equipamento de proteção individual: Eyeshields, Gloves, type N95 (US)