Dibenzo-18-crown-6

Product Name: Dibenzo-18-crown-6
CAS No.: 14187-32-7
Chemical Name: Dibenzo-18-crown-6
Synonyms: DB18C6;ibenzo-18-crown-6;6,7,9,10,17,18,20,21-Octahydrodibenzo[b,k][1,4,7,10,13,16]hexaoxacyclooctadecine;crown18;Crown 18;crown-18;Dibenzocrown;DIBENZO-18-CROWN-6;Dibenzo-18-crown-8;Tin(II) Ionophore I
CBNumber: CB0436113
Molecular Formula: C20H24O6
Formula Weight: 360.4
MOL File: 14187-32-7.mol

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Dibenzo-18-crown-6 Property

Melting point:: 162-164 °C (lit.)
Boiling point:: 380-384 °C (679 mmHg)
Density: 1.1801 (rough estimate)
refractive index: 1.5200 (estimate)
Flash point:: 380-384°C/679mm
storage temp.: Store below +30°C.
solubility: 0.007g/l
form: Fluffy Powder
color: White to slightly beige
Water Solubility: sparingly soluble
Sensitive: air sensitive
λmax: 277nm(CH2Cl2)(lit.)
Merck: 14,2602
BRN: 1162153
InChIKey: YSSSPARMOAYJTE-UHFFFAOYSA-N
CAS DataBase Reference: 14187-32-7(CAS DataBase Reference)
NIST Chemistry Reference: Dibenzo-18-crown-6(14187-32-7)
EPA Substance Registry System: Dibenzo[b,k][1,4,7,10,13,16]hexaoxacyclooctadecin, 6,7,9,10,17,18,20,21-octahydro- (14187-32-7)

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Safety

Hazard Codes: Xi,Xn
Risk Statements: 36-36/37/38-20/21/22
Safety Statements: 26-37/39-36
WGK Germany: 2
RTECS: HP5386000
Hazard Note: Irritant
TSCA: Yes
HS Code: 29329995
Toxicity: LD50 orally in Rabbit: 2600 mg/kg

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P405Store locked up.

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: 8.11731
Product name: Crown ether/Dibenzo-18-crown-6
Purity: for synthesis
Packaging: 5G
Price: $36.8
Updated: 2024/03/01

Sigma-Aldrich

Product number: 158399
Product name: Dibenzo-18-crown-6
Purity: 98%
Packaging: 2.5g
Price: $18.78
Updated: 2024/03/01

Sigma-Aldrich

Product number: 8.11731
Product name: Crown ether/Dibenzo-18-crown-6
Purity: for synthesis
Packaging: 50g
Price: $245
Updated: 2024/03/01

Sigma-Aldrich

Product number: 158399
Product name: Dibenzo-18-crown-6
Purity: 98%
Packaging: 10g
Price: $65.8
Updated: 2024/03/01

TCI Chemical

Product number: D1533
Product name: Dibenzo-18-crown 6-Ether
Purity: >99.0%(GC)
Packaging: 5g
Price: $16
Updated: 2024/03/01

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Dibenzo-18-crown-6 Chemical Properties,Usage,Production

Description

Dibenzo-18-crown-6 (DB18C6) is the first crown ether synthesized by Pedersen in 1967 and has the strongest binding affinity to a potassium cation (K+) among alkali metal cations. With the similarity of the sizes between K+ and the cavity of crown ether, it had long been believed that the binding selectivity comes from the size relationship between the metal cation and the cavity. However, it was reported that under identical experimental conditions, K+ bound strongly to all crown ethers (12-crown-4 to 24-crown-8) irrespective of the ring size among other cations such as Na+, Ca2+, and NH4+. Moreover, in the gas phase, 18-crown-6 (18C6) and dibenzo18-crown-6 (DB18C6) form preferential complexation in the order Li+ > Na+ > K+ > Rb+ > Cs+, while in the aqueous solution both of them show highest complexion capacity for K+ rather than Li+[1-2].

Chemical Properties

white to slightly beige fluffy powder

Uses

Dibenzo-18-crown-6, is used as an important raw material and intermediate used in organic Synthesis, pharmaceuticals, agrochemicals and dyestuff. It is an important organic intermediate.

Uses

Crown ether/Dibenzo-18-crown-6 for synthesis. CAS 14187-32-7, molar mass 360.41 g/mol.

Definition

ChEBI: Dibenzo-18-crown-6 is a crown ether that is 18-crown-6 ortho-fused to two benzene rings at positions 8-9 and 17-18. It has a role as a phase-transfer catalyst. It is a member of benzenes and a crown ether.

Purification Methods

Crystallise it from *benzene, n-heptane or toluene and dry it under vacuum at room temperature for several days. [Szezygiel J Phys Chem 91 1252 1987, V.gtle ed. Top Corr Chem (Host Guest Complex Chemistry) 98 1981.]

References

[1] Pooja Sahu, Jayant K. Singh, Sk. M. Ali. “Structural and dynamical properties of Li+-dibenzo-18-crown-6(DB18C6) complex in pure solvents and at the aqueous-organic interface.” Journal of Molecular Modeling 20 9 (2014).
[2] Chang Min Choi, Nam Joon Kim, Jiyoung Heo. “Binding selectivity of dibenzo-18-crown-6 for alkali metal cations in aqueous solution: A density functional theory study using a continuum solvation model.” Chemistry Central Journal 6 1 (2012): 84.

Dibenzo-18-crown-6 Preparation Products And Raw materials

Raw materials

Preparation Products

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Dibenzo-18-crown-6 Suppliers

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View Lastest Price from Dibenzo-18-crown-6 manufacturers

hebei hongtan Biotechnology Co., Ltd

Product: Dibenzo-18-crown-6 14187-32-7
Price: US $30.00/kg
Min. Order: 1kg
Purity: 99%
Supply Ability: 2000kg
Release date: 2024-05-13

Hebei Weibang Biotechnology Co., Ltd

Product: Dibenzo-18-crown-6 14187-32-7
Price: US $10.00/KG
Min. Order: 1KG
Purity: 99%
Supply Ability: 10 mt
Release date: 2024-11-01

Hebei Chuanghai Biotechnology Co,.LTD

Product: Dibenzo-18-crown-6 14187-32-7
Price: US $5.00-2.00/KG
Min. Order: 1KG
Purity: 99%
Supply Ability: 10000kg
Release date: 2024-08-15

14187-32-7, Dibenzo-18-crown-6Related Search:

Benzophenone Bis(2-ethylhexyl) phthalate Diphenyl ether 12-Crown-4 p-Phenylenediamine Isophthalic acid Phthalic acid Potassium hydrogen phthalate DIBENZO-30-CROWN-10 4',4''(5'')-DI-TERT-BUTYLDIBENZO-18-CROWN-6 4',4''(5'')-DIACETYLDIBENZO-18-CROWN-6 PERHYDRO-DIBENZO-18-CROWN-6 2,4a-DIBENZO-18-CROWN-6, 99+%,[2,4!-DIBENZO-18-CROWN-6, 99+% Diethyl ether 18-Crown-6 4',4''(5'')-DIVALERYLDIBENZO-18-CROWN-6 4,4'(5')-DIBROMODIBENZO-18-CROWN-6 4'-AMINODIBENZO-18-CROWN-6

CROWN ETHER/DIBENZO-18-CROWN-6

DIBENZO-18-CROWN-6

dibenzo[b,k][1,4,7,10,13,16]hexaoxacyclooctadecin,6,7,9,10,17,18,20,21-octahyd

dibenzo[bk][1,4,7,10,13,16]hexaoxacyclooctadecane

Dibenzocrown

Diphenyl-18-crown-6-polyether

k](1,4,7,10,13,16)hexaoxacyclooctadecin,6,7,9,10,17,18,20,21-octahydro-Dibenzo[b

6,7,9,10,12,13,20,21-Octahydrodibenzo[b,k][1,4,7,10,13,16]hexaoxacyclo-octadecin

Dibenzocrownminwhitepowder

dibenzo[a,j]-1,4,7,10,13,16-hexaoxacyclooctadeca-2,11-diene

2,3,11,12-Dibenzo-1,4,7,10,13,16-Hexaoxacyclooctad

Tin(II) Ionophore I

DIBENZO-18-CROWN-6(6,7,9,10,17,18,20,21-OCTAHYDRODIBENZO)

6,7,9,10,17,18,20,21-Octahydrodibenzo[b,k][1,4,7,10,13,16]

hexaoxacyclooctadecene

Crown ether/Dibenzo-18-crown-6 for synthesis

6,7,9,10,12,13,15,16-Octahydrodibenzo[b,e][1,4,7,10,13,16]hexaoxacyclooctadecine

DIBENZO-18-CROWN 6-ETHER

2,3,11,12-DIBENZO-1,4,7,10,13,16-HEXAOXACYCLOOCTADECA-2,11-DIENE

6,7,9,10,17,18,20,21-OCTAHYDRODIBENZO

6,7,9,10,17,18,20,21-OCTAHYDRODIBENZO[B,K][1,4,7,10,13,16]HEXAOXACY-CLOOCTADECENE

CROWN ETHER/DIBENZO-18-CROWN-6 FOR SYNTH

Dibenzo-18-crown-6 Dibenzo-18-crown-6 ,98%

Dibenzo-18-crown-6, 98% 10GR

Dibenzo-18-crown-6, 98% 50GR

Dibenzo-18-crown-6, 6,7,9,10,17,18,20,21-Octahydrodibenzo[b,k][1,4,7,10,13,16]hexaoxacyclooctadecene, 2,3,11,12-Dibenzo-1,4,7,10,13,16-hexaoxacyclooctadeca-2,11-diene

6,7,9,10,17,18,20,21-Octahydrodibenzo[b,k][1,4,7,10,13,16]hexaoxacyclooctadecene, 2,3,11,12-Dibenzo-1,4,7,10,13,16-hexaoxacyclooctadeca-2,11-diene

Dibenzo-18-crown-6, min. 98%

2,2'-[Oxybis(ethyleneoxy)]-[1,1'-[oxybis(ethyleneoxy)]bisbenzene]

2,2'-[Oxybis(ethyleneoxy)][1,1'-[oxybis(ethyleneoxy)]bisbenzene]

Diabenzo-18-crown-6

Dibenzo-18-crown-6 ,97%

Dibenzo-18-crown-6,2,3,11,12-Dibenzo-1,4,7,10,13,16-hexaoxacyclooctadeca-2,11-diene, 6,7,9,10,17,18,20,21-Octahydrodibenzo[b,k][1,4,7,10,13,16]hexaoxacyclooctadecene

2,3,11,12-dibenzo-1,4,7,10,13,16-hexaoxacyclooctadeca-2,11-diene,dibenzo-18-crown-6

6,7,9,10,17,18,20,21-octahydrodibenzo(b,k)(1,4,7,10,13,16)hexaoxacyclooctade

6,7,9,10,17,18,20,21-OCTAHYDRODIBENZO(b,k)(1,4,7,10,13,16)HEXAOXACYCLOOCTADECIN

6,7,9,10,17,18,20,21-Octahydrodibenzo[b,k][1,4,7,10,13,16]hexaoxacyclooctadecine

Crown 18

crown18

crown-18

Dibenzo[b,k][1,4,7,10,13,16]hexaoxacyclooctadecane

Dibenzo[b,k][1,4,7,10,13,16]hexaoxacyclooctadecin, 6,7,9,10,17,18,20,21-octahydro-

1,4,7,14,17,20-HEXAOXA-[7.7]ORTHOCYCLOPHANE

Dibenzo-18-crown-6, 98+%

Dibenzo-18-crown-6,min.98%

1,4,7,14,17,20-HEXAOXA[7.7]ORTHOCYCLOPHANE<BR> DIBENZO-18-CROWN-6

Diphenyl and - 18 - crown ether - 6

Dibenzo-18-crown-6 98%

DB18C6

dibenzanthrance-18-crown-6

Dibenzo-18-crown6-Ether&gt

Dibenzo-18-crown-6, 98%, reagent grade

ibenzo-18-crown-6

Dibenzo[a,j]-1,4,7,10,13,16-hexaoxacyclooctadeca-2,11-dien

Dibenzo-18-crown-8

Dibenzo-18-crown-ether-6

2,5,8,15,18,21-hexaoxatricyclo[20.4.0.0?,1?]hexacosa-1(26),9,11,13,22,24-hexaene

Dibenzanthracene-18-Crown-6