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Sigma-Aldrich

Reichardt′s dye

Dye content 90 %

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Synonym(s):
2,6-Diphenyl-4-(2,4,6-triphenyl-1-pyridinio)phenolate, 2,6-Diphenyl-4-(2,4,6-triphenylpyridinio)phenolate
Empirical Formula (Hill Notation):
C41H29NO
CAS Number:
10081-39-7
Molecular Weight:
551.68
Beilstein:
1444580
MDL number:
MFCD00013355
UNSPSC Code:
12171500
PubChem Substance ID:
24856472
NACRES:
NA.47

form

powder

Quality Level

100

composition

Dye content, 90%

mp

271-275 °C (lit.)

λmax

306 nm
551 nm (2nd)

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

[O-]c1c(cc(cc1-c2ccccc2)-[n+]3c(cc(cc3-c4ccccc4)-c5ccccc5)-c6ccccc6)-c7ccccc7

InChI

1S/C41H29NO/c43-41-37(31-18-8-2-9-19-31)28-36(29-38(41)32-20-10-3-11-21-32)42-39(33-22-12-4-13-23-33)26-35(30-16-6-1-7-17-30)27-40(42)34-24-14-5-15-25-34/h1-29H

InChI key

UWOVWIIOKHRNKU-UHFFFAOYSA-N

Related Categories

General description

Reichardt′s dye belongs to the class of azo merocyanine dyes. Reichardt′s dye, also known as ET(30) or pyridinium N-phenoxyde betaine dye is a highly solvatochromic betaine dye useful for determining solvent polarity effects. It plays an important role as a probe of solvent polarity in biological systems and on surfaces.

Application

Reichardt’s dye, a solvatochromic betaine dye has been used for the determination of solvent polarity.

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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Yu Chen et al.
Analytica chimica acta, 1034, 128-136 (2018-09-09)
In this work, a paper-based optoelectronic sensor (paper-nose) is presented for sensing volatile gases in air. The proposed optoelectronic sensor is a combination of both colorimetric (optical) and chemiresistive (electronic) sensor arrays in order to improve the selectivity of the
C. Reichardt
Pure and Applied Chemistry. Chimie Pure Et Appliquee, 80, 1415-1415 (2008)
Aldrichimica Acta, 20, 59-59 (1987)
Chemical Reviews, 94, 2319-2319 (1994)
Beatrice Swensson et al.
Polymers, 12(6) (2020-06-12)
To further understand cellulose-solvent interactions in aqueous hydroxide solutions, cellulose behavior in aqueous solutions of NaOH combined with tetramethylammonium hydroxide (TMAH) or benzyltrimethylammonium hydroxide (Triton B), as well as urea, was investigated. The rheological properties of the solutions were assessed
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