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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 Organic Synthesis Reagent/Solvent 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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