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158399

Sigma-Aldrich

Dibenzo-18-crown-6

98%

동의어(들):

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, DB18C6

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2.5 G
₩40,296
10 G
₩135,706
50 G
₩273,847

₩40,296

출고 가능일2025년 4월 24일세부사항

벌크 견적 요청
모든 사진(3)

크기 선택

보기 변경
2.5 G
₩40,296
10 G
₩135,706
50 G
₩273,847

About This Item

실험식(Hill 표기법):
C20H24O6
CAS Number:
14187-32-7
Molecular Weight:
360.40
Beilstein:
1162153
EC Number:
238-041-3
MDL number:
MFCD00005098
UNSPSC 코드:
12352005
PubChem Substance ID:
24849732
NACRES:
NA.22

₩40,296

출고 가능일2025년 4월 24일세부사항

벌크 견적 요청

Quality Level

100

분석

98%

mp

162-164 °C (lit.)

작용기

ether

SMILES string

C1COc2ccccc2OCCOCCOc3ccccc3OCCO1

InChI

1S/C20H24O6/c1-2-6-18-17(5-1)23-13-9-21-11-15-25-19-7-3-4-8-20(19)26-16-12-22-10-14-24-18/h1-8H,9-16H2

InChI key

YSSSPARMOAYJTE-UHFFFAOYSA-N

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일반 설명

Dibenzo-18-crown-6 is a macrocyclic ligand used in the selective binding and extraction of alkali metal cations in solution phase. [1] [2]

애플리케이션

Phase-transfer catalyst employed in monoazaporphyrin syntheses.[3] Agent used for ion transfer across membranes[4] and as a synthon for preparation of liquid crystal polyesters.[5]

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point (°F)

Not applicable

Flash Point (°C)

Not applicable

개인 보호 장비

dust mask type N95 (US), Eyeshields, Gloves

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시험 성적서(COA)

Lot/Batch Number
0000372773
0000372774
0000362128
0000362129
0000362128

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문서 라이브러리 방문

이미 열람한 고객

Slide 1 of 1

1 of 1

18-Crown-6 purum, ≥99.0% (GC)

Sigma-Aldrich

28125

18-Crown-6

Binding selectivity of dibenzo-18-crown-6 for alkali metal cations in aqueous solution: A density functional theory study using a continuum solvation model
Chang Min C et al.
Chemistry Central Journal, 6, 1-8 (2012)
Tetrahedron Letters, 36, 1567-1567 (1995)
Acta Polym., 45, 308-308 (1994)
Solvent influence upon complex formation between dibenzo-18-crown-6 with the Y3+ metal cation in pure and binary mixed organic solvents
GH Rounaghi et al.
Journal of Chemical and Engineering Data, 56, 2836-2840 (2011)
Lei Hu et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 104, 87-91 (2012-12-26)
In this contribution, an improved near-infrared absorbing colorimetric detection of Hg(2+) ion with high selectivity and sensitivity had been developed by using bis-dibenzo-18-crown-6-based squaraine (BCSQ) as sensor in aqueous media. The proposed method was applied to analyze trace Hg(2+) in
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  1. How can I determine the shelf life / expiration / retest date of this product?

    1 답변

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 답변

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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