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1-Bromobutano (N.º CAS: 109-65-9)

1-Bromobutano (N.º CAS: 109-65-9)

N.º CAS: 109-65-9

Conteúdo:99.00%

Aplicações: Utilizado como agente alquilante na produção de produtos farmacêuticos (por exemplo, procaína e tetracaína), agroquímicos e outros compostos orgânicos; precursor de reagentes de Grignard e organometálicos como o n-butilítio.

Descrição

Visão geral do produto

1-Bromobutane (also known as n-Butyl Bromide or Butyl Bromide) CAS No.: 109-65-9 , with the chemical formula C₄H₉Br and a molecular weight of 137.02 g/mol. It is a colorless to light yellow liquid with a characteristic or pleasant odor. This compound belongs to the class of alkyl halides and is primarily used in organic synthesis and as a solvent, though it is flammable and subject to safety regulations due to its irritant and environmental properties.

Propriedades

1-Bromobutane exhibits the following key physical and chemical properties:

  • Estado físico: Líquido (à temperatura ambiente).
  • Aparência: Líquido límpido, incolor a amarelo claro.
  • Odor: Characteristic or pleasant odor.
  • Ponto de fusão: -112 °C.
  • Ponto de ebulição: 101-102 °C.
  • Densidade: 1.27 g/mL (at 25 °C).
  • Solubilidade: Slightly soluble in water (0.6 g/L); miscible with organic solvents like ethanol, ether, and chloroform.
  • Estabilidade: Stable under normal conditions; flammable with a flash point of 10-23 °C; incompatible with strong oxidants and strong bases.
  • Toxicidade: Moderately toxic; LD50 oral in rat: 2761 mg/kg; causes irritation to skin, eyes, and respiratory tract; may cause respiratory irritation, headache, nausea; toxic to aquatic life with long-lasting effects.

Aplicações

The primary applications of 1-bromobutane include:

  • Intermediário de síntese orgânica: Used as an alkylating agent in the production of pharmaceuticals (e.g., procaine and tetracaine), agrochemicals, and other organic compounds; precursor for Grignard reagents and organometallics like n-butyllithium.
  • Solvente: Employed for cleaning, degreasing, and extraction in industrial and laboratory processes.
  • Outros: Acts as a derivatization reagent for functional groups (e.g., amino acids to improve hydrophobicity); used as an internal standard in analytical techniques like gas chromatography for quantifying compounds in samples such as human urine.

Classificação

The following table outlines the classification of 1-bromobutane based on chemical properties, uses, and regulations:

Tipo de classificação Categoria específica Descrição
Classe química Halogeneto de alquilo (bromoalcano) Um alcano primário bromado, reativo em reacções de substituição nucleofílica (por exemplo, SN2).
Classe de utilização Reagente/Solvente de Síntese Orgânica Primarily an intermediate for chemical synthesis and cleaning/degreasing applications.
Classe de perigo Flammable Liquid (UN 1126); Irritant Flammable (flash point 10-23 °C); irritating to skin, eyes, and respiratory system (GHS: H225, H315, H319, H335, H411); toxic to aquatic life; packing group II.
Classe de regulamentação Produto químico controlado (REACH, TSCA) Registered under EU REACH (EC 203-691-9) and US TSCA; subject to environmental release controls and hazardous substance regulations (WGK 2 in Germany).

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