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18-crown-6

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FOB Price $100.00

Origin: China

Cas No: 17455-13-9

Specification: 99%min

Min order Quantity: 1 /kg

Supply Ability: 50 mt/month

Lead time: 7 days for OEM, 3 days for ready goods

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Products Specification
Product Description

Quick Details
CAS No.:
17455-13-9
Other Names:
18-Crown-6 ether
MF:
C12H24O6
EINECS No.:
241-473-5
Place of Origin:
Shaanxi, China
Type:
Pharmaceutical Intermediates, Syntheses Material Intermediates
Purity:
98%
Brand Name:
GK
Model Number:
GK2020
Application:
Intermediate in organic syntheses
Appearance:
Powder
Molecular Weight:
264.32
Boiling point:
116°C 0,2mm
Certification:
HPLC, HNMR, more..
Shelf life:
3 Years
Sample:
Availiable
Color:
White or clear colorless
Storage temp:
Store at 0-5°C
Density:
1,175 g/cm3
Melting point:
42-45 °C(lit.)
Flash point:
>230 °F
Packaging&Delivery
Packaging Details
Packing:1kg/bag, 25kgs/drum Two plastic-bags inside and Paper-drums or as customer's requirements.
Port
Any port in China
Lead Time:
Quantity(Grams) 1 - 1 2 - 10 >10
Est. Time(days) 5 15 To be negotiated

Property

CAS No.: 17455-13-9 Formula: C12H24O6 Molecular Weight: 264.31500

Description

18-Crown-6 is an organic compound with the formula [C2H4O]6 and the IUPAC name of 1,4,7,10,13,16-hexaoxacyclooctadecane. It is a white, hygroscopic crystalline solid with a low melting point. Like other crown ethers, 18-crown-6 functions as a ligand for some metal cations with a particular affinity for potassium cations (binding constant in methanol: 106M−1). The point group of 18-crown-6 is S6. The dipole moment of 18-crown-6 varies in different solvent and under different temperature. Under 25°C, the dipole moment of 18-crown-6 is 2.76 ± 0.06 D in cyclohexane and 2.73 ± 0.02 in benzene. The synthesis of the crown ethers led to the awarding of the Nobel Prize in Chemistry to Charles J. Pedersen.

Basic Info

Chemical Name	18-crown-6
Synonyms	1,4,7,10,13,16-Hexaoxacyclooctadecane; [18]crown-6; 18-Crown-6; 18-Crown 6-Ether; 18-Crown ether-6; CROWN-18-5-ETHER;
CAS No.	17455-13-9
Molecular Formula	C12H24O6
Molecular Weight	264.31500
PSA	55.38000
LogP	0.09960

Properties

Appearance & Physical State	Colorless crystals
Density	0.995 g/cm3
Boiling Point	395.8ºC at 760 mmHg
Melting Point	36-40ºC
Flash Point	>110ºC
Refractive Index	1.4577 (50ºC)
Water Solubility	SOLUBLE
Stability	Stable. Incompatible with strong acids, strong oxidizing agents.
Storage Condition	Store at 0-5ºC
Vapor Pressure	4.09E-06mmHg at 25°C

Safety Info

RTECS	MP4500000
Hazard Class	6.1(b)
Safety Statements	S26-S39
HS Code	2932999099
Packing Group	III
WGK Germany	3
RIDADR	UN 2811
Risk Statements	R20/22; R36
Hazard Codes	Xn
Caution Statement	P301 + P312 + P330
Signal Word	Warning
Hazard Declaration	H302
Symbol	GHS07

Synthesis Route

tetraethylene glycol+triethylene glycol→18-crown-6+1,4,7,10,13,16,19-heptaoxacyclohenicosane
tetraethylene glycol+Diethylene glycol→12-crown-4+18-crown-6
18-crown-6/p-nitrobenzenediazonium tetrafluoroborate complex→18-crown-6+4-Nitrobenzenediazonium Tetrafluoroborate

Precursor

hexaethylene glycol
2-[2-[2-(4-methylphenyl)sulfonyloxyethoxy]ethoxy]ethyl 4-methylbenzenesulfonate
triethylene glycol
1,4,7,10,13,16-Hexaoxacyclooctadecane-2,3-dithione

Downstream Product

Ethyl 3-ethoxy-cis-crotonate
(E)-3-ethoxy-crotonic acid ethyl ester
ethyl 2,2-diethyl-3-oxobutanoate
Rhenium pentacarbonyl chloride

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