Description

15-Crown-5 is a versatile macrocyclic polyether, or crown ether, specifically designed to selectively complex with sodium ions. This compound matters for its critical role in phase-transfer catalysis, ion transport studies, and as a key reagent in organic synthesis and materials science. Industries that need it include pharmaceutical intermediates, specialty chemical manufacturing, and academic research laboratories developing new separation technologies or sensor materials.

Application

• Phase-Transfer Catalyst (PTC): Facilitates reactions between reagents in immiscible phases, particularly useful for nucleophilic substitutions and polymerizations.
• Sodium Ion Selective Complexation: Used in ion-selective electrodes (ISEs), membrane transport studies, and separation science for sodium ion recognition.
• Organic Synthesis Reagent: Enhances reactivity and solubility of alkali metal salts in nonpolar organic solvents for various coupling and condensation reactions.
• Polymer & Materials Science: Serves as a building block or templating agent for creating functional polymers, supramolecular assemblies, and advanced materials.
• Analytical Chemistry: Employed in chromatographic separations and as an additive in spectroscopic analysis to modify solubility and interaction properties.
• Electrolyte Additive: Investigated for use in battery systems to improve ion conductivity and electrode stability.

Basic Information

Item	Detail
Product Name	15-Crown-5
CAS No.	33100-27-5
Molecular Formula	C10H20O5
Molecular Weight	220.26 g/mol
Synonyms	1,4,7,10,13-Pentaoxacyclopentadecane; 15-Crown-5 Ether; Pentaglyme; Cyclic Pentaethylene Glycol Ether; 1,4,7,10,13-Pentaoxacyclopentadec-5-ene (common misnomer); 15C5; Pentaethylene Glycol Cyclic Ether
EINECS	251-375-4

Quality Control

Our 15-Crown-5 is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including assay by GC or HPLC, water content determination (Karl Fischer), and identity confirmation (IR, NMR) to ensure high purity and consistency. Certificates of Analysis (COA) detailing all specifications and test results are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic nature, keep the container tightly sealed when not in use to prevent moisture absorption.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC/HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.