4-Chloro-1-butene (CAS NO.: 927-73-1)

CAS NO.: 927-73-1

Content:98.00%

Application: Used as an intermediate in the synthesis of pharmaceuticals and active pharmaceutical ingredients (APIs).

Product Overview

4-Chloro-1-butene (also known as 1-Chloro-3-butene, 3-Butenyl chloride, or Allylcarbinyl chloride) CAS No.: 927-73-1 , with the chemical formula C₄H₇Cl and a molecular weight of 90.55 g/mol. It is a clear colorless to light yellow liquid. This compound belongs to the class of alkyl halides (chloroalkenes) and is primarily used in organic synthesis and as a reagent, though it is subject to safety regulations due to its flammable and irritant properties.

Properties

4-Chloro-1-butene exhibits the following key physical and chemical properties:

• Physical State: Liquid (at room temperature).
• Appearance: Clear colorless to light yellow liquid.
• Odor: No information available.
• Melting Point: -96 °C (estimate).
• Boiling Point: 73-75 °C.
• Density: 0.896-0.921 g/mL (at 25 °C).
• Solubility: No specific data available; likely insoluble in water and soluble in organic solvents like ethanol and ether.
• Stability: Stable under normal conditions; incompatible with strong oxidizing agents; hazardous decomposition may produce toxic fumes.
• Toxicity: Moderately toxic; harmful if swallowed (acute oral toxicity Category 4); may cause skin and eye irritation, headache, dizziness, nausea, and vomiting upon inhalation.

Applications

The primary applications of 4-chloro-1-butene include:

• Organic Synthesis Intermediate: Used as an intermediate in the synthesis of pharmaceuticals and active pharmaceutical ingredients (APIs).
• Reagent: Employed in organic synthesis to introduce chlorine into molecules and in various chemical reactions.
• Other: Involved in the production of agrochemicals and fine chemicals.

Classification

The following table outlines the classification of 4-chloro-1-butene based on chemical properties, uses, and regulations: