Description

Product Overview

1,5-Dibromopentane (also known as Pentamethylene dibromide or 1,5-Pentane dibromide) CAS No.: 111-24-0 , with the chemical formula C₅H₁₀Br₂ and a molecular weight of 229.94 g/mol. It is a clear colorless to yellow-brown liquid. This compound belongs to the class of alkyl halides and is primarily used in organic synthesis and as a reagent, though it is subject to safety regulations due to its irritant properties.

Properties

1,5-Dibromopentane exhibits the following key physical and chemical properties:

• Physical State: Liquid.
• Appearance: Clear colorless to yellow-brown liquid.
• Odor: Not specified.
• Melting Point: -34 °C (lit.).
• Boiling Point: 110 °C/15 mmHg (lit.); approximately 224 °C at normal pressure.
• Density: 1.688 g/mL at 25 °C (lit.).
• Solubility: Soluble in chloroform and methanol (sparingly), insoluble in water.
• Stability: Stable under normal conditions; incompatible with strong oxidizing agents.
• Toxicity: Moderately toxic; causes skin and eye irritation; signal word “Warning”.

Applications

The primary applications of 1,5-dibromopentane include:

• Organic Synthesis Intermediate: Used in the preparation of 1,5-di-Grignard reagent and novel spirocyclic pyrrolidones; synthesis of N-alkylated piperidine and tetrahydrothiopyran; derivatives of 5-pyrazolones; O-alkylated phloroglucinol derivatives for dendrimers; intermediate for dezocine.
• Growth Supplement: Acts as a growth supplement for Yarrowia lipolytica 3589, a tropical marine yeast.
• Other: Used in various chemical reactions and as a reagent in laboratory settings.

Classification

The following table outlines the classification of 1,5-dibromopentane based on chemical properties, uses, and regulations: