243469

Zinc

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

• Synonyme(s) : Zn
• Formule empirique (notation de Hill): Zn
• Numéro CAS: 7440-66-6
• Poids moléculaire : 65.39
• Numéro CE : 231-175-3
• Numéro MDL: MFCD00011291
• Code UNSPSC : 12161600
• ID de substance PubChem : 24854618
• Nomenclature NACRES : NA.22

Propriétés

• Qualité: ACS reagent
• Niveau de qualité: 200
• Pression de vapeur: 1 mmHg ( 487 °C)
• Pureté: ≥99.8%
• Forme: granular
• Pertinence de la réaction: core: zinc; reagent type: catalyst
• Résistivité: 5.8 μΩ-cm, 20°C
• Taille des particules: 20-30 mesh
• Point d'ébullition: 907 °C (lit.)
• Pf: 420 °C (lit.)
• Densité: 7.133 g/mL at 25 °C (lit.)
• Traces de cations: Fe: ≤0.01%; Pb: ≤0.01%
• Adéquation: passes application test for determination of arsenic (As)
• Chaîne SMILES: [Zn]
• InChI: 1S/Zn
• Clé InChI: HCHKCACWOHOZIP-UHFFFAOYSA-N

Description

Description générale

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

Informations sur la sécurité

• Pictogrammes: GHS09
• Mention d'avertissement: Warning
• Mentions de danger: H410
• Conseils de prudence: P273 - P391 - P501
• Classification des risques: Aquatic Acute 1 - Aquatic Chronic 1
• Code de la classe de stockage: 11 - Combustible Solids
• Classe de danger pour l'eau (WGK): WGK 2
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable
• Équipement de protection individuelle: Eyeshields, Gloves, type N95 (US)