Description

1,4-Dithia-18-Crown-6 is a sulfur-containing macrocyclic polyether, commonly known as a thiacrown ether. This compound is valued for its unique ability to selectively bind and transport soft metal ions, particularly silver(I), mercury(II), and lead(II), due to the presence of sulfur donor atoms within its cavity. It is a critical reagent for researchers and manufacturers in analytical chemistry, metal ion separation processes, and the development of chemical sensors and catalysts.

Application

• Selective Ion Transport & Separation: Used in liquid membranes and extraction systems for the selective separation and recovery of soft metal ions like Ag⁺, Hg²⁺, and Pb²⁺ from complex mixtures.
• Chemical Sensor Development: Serves as an ionophore in the fabrication of ion-selective electrodes (ISEs) and optical sensors for detecting specific heavy metal ions in environmental and industrial samples.
• Catalysis & Synthesis: Acts as a phase-transfer catalyst or a ligand in organometallic chemistry to facilitate reactions involving soft metal cations.
• Analytical Chemistry: Employed as a complexing agent in spectrophotometry, chromatography, and other analytical techniques to enhance the detection and quantification of target metal ions.
• Fundamental Research: A key tool in supramolecular and coordination chemistry studies for investigating host-guest interactions and the thermodynamics of cation binding.

Basic Information

Product Name	1,4-Dithia-18-Crown-6
CAS No.	52559-80-5
Molecular Formula	C₁₂H₂₄O₄S₂
Molecular Weight	296.44 g/mol
Synonyms	1,4,10,13-Tetraoxa-7,16-dithiacyclooctadecane; 7,16-Dithia-1,4,10,13-tetraoxacyclooctadecane; 18-Crown-6, 1,4-dithia derivative; Dithia-18-crown-6; 1,4-DT18C6; Thiacrown ether; DT18C6
EINECS	258-023-7

Quality Control

Our 1,4-Dithia-18-Crown-6 is manufactured under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including identification (IR, NMR), purity assay (HPLC, GC), and determination of residual solvents to ensure it meets the high standards required for research and industrial applications. A detailed Certificate of Analysis (COA) is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	98 - 102 °C
Loss on Drying	≤ 0.5 %
Residue on Ignition	≤ 0.1 %

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