194905
Sigma-Aldrich

12-CROWN-4 98%

Empform:

C8H16O4

Synonyms English:

1,4,7,10-Tetraoxacyclododecane

Nacres: NA.22
Mdl No: MFCD00005103
Fw: 176.21
Pubchem Substance Id: 24851661
CAS Number: 294-93-9
Grouped product items
SKU Pack Size Availability Price Quantity
194905-1G 1g Estimate to ship on February 06, 2023 -
₫810,054
194905-5G 5g Estimate to ship on February 06, 2023 -
₫2,766,445
Request a Bulk Order Check Availability

Properties

Properties
assay 98%
bp 61-70 
bromine number ?C/0.5 
brush size diam. × l mmHg (lit.)
depth 1.089 
depth × h × w g/mL 
depth × overall h at 25 
depth × width ?C (lit.)
description 12-CROWN-4 98%
frame w × l liquid
inlet and outlet nptm × nptm 1S/C8H16O4/c1-2-10-5-6-12-8-7-11-4-3-9-1/h1-8H2
inlet and outlet size XQQZRZQVBFHBHL-UHFFFAOYSA-N
Need License To Purchase Temp. Regu
Check Obsolete 12/31/9999 12:00:00 AM
Temperature Control 1554
Shipping Mode DAS

Description

Application

12-Crown-4 can be used as:
  • A promoter in the synthesis of poly(diethylsiloxane) (PDES) from monomer hexaethylcyclotrisiloxane using NaOH as a catalyst via anionic ring-opening polymerization.
  • As an additive in the preparation of triarylmethane derivatives by palladium-catalyzed cross coupling reaction of aryl bromides with diarylmethane derivatives.
  • A phase transfer catalyst in organic synthesis.

General description

12-Crown-4 is a crown ether generally used as a ligand in coordination chemistry. It is also known as lithium ionophore because of its strong chelating property specific to lithium cation.

SAFETY INFORMATION

Signal Word

Danger

P304 + P340 + P310

RIDADRRIDADR

WGK Germany

WGK 3

Flash Point (F)

235.4 °F - closed cup

Flash Point (C)

113 °C - closed cup

Target Organs

Risk Statement

Supplemental Hazard Statements

DOCUMENTATION

Certificate of Analysis View Sample COA
Certificate of Origin

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