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272442

Sigma-Aldrich

Reichardt′s dye

Dye content 90 %

Synonym(s):

2,6-Diphenyl-4-(2,4,6-triphenyl-1-pyridinio)phenolate, 2,6-Diphenyl-4-(2,4,6-triphenylpyridinio)phenolate

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About This Item

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
Pricing and availability is not currently available.

form

powder

Quality Level

100

composition

Dye content, 90%

technique(s)

titration: suitable

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.[1][2]

[2]

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
SHBS5368
SHBQ8359
SHBN2356
MKCL8021
MKCH6723

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Sigma-Aldrich

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