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12-Crown-4

ALDRICH/194905 - 98%

Synonym: 1,4,7,10-Tetraoxacyclododecane

CAS Number: 294-93-9
Empirical Formula (Hill Notation): C8H16O4
Molecular Weight: 176.21
EC Number: 206-036-5
MDL Number: MFCD00005103
Linear Formula: C8H16O4
Product Type: Chemical

Catalog Number PKG Qty. Price Quantity
45-194905-1G 1 g
$62.50
1/EA
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45-194905-5G 5 g
$148.00
1/EA
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assay 98%
bp 61-70 °C/0.5 mmHg (lit.)
density 1.089 g/mL at 25 °C (lit.)
form liquid
InChI 1S/C8H16O4/c1-2-10-5-6-12-8-7-11-4-3-9-1/h1-8H2
InChI key XQQZRZQVBFHBHL-UHFFFAOYSA-N
mp 16 °C (lit.)
Quality Level 100 
refractive index n20/D 1.463 (lit.)
SMILES string C1COCCOCCOCCO1
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.
Packaging: 1, 5 g in glass bottle
Symbol GHS06  GHS06
Signal word Danger
Hazard statements H330
Precautionary statements P304 + P340 + P310
Hazard Codes T+
Risk Statements 26
Safety Statements 28-36/37-45
RIDADR NONH for all modes of transport
WGK Germany WGK 3
Flash Point(F) 235.4 °F - closed cup
Flash Point(C) 113 °C - closed cup
Purity 98%
bp 61-70 °C/0.5 mmHg (lit.)
mp 16 °C (lit.)
Density 1.089 g/mL at 25 °C (lit.)
Refractive Index n20/D 1.463 (lit.)
UNSPSC 12352005

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