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212490

Sigma-Aldrich

Direct Red 23

Dye content 30 %

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Empirical Formula (Hill Notation):
C35H25N7Na2O10S2
CAS Number:
Molecular Weight:
813.72
Colour Index Number:
29160
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.47

form

powder

composition

Dye content, 30%

λmax

507 nm

ε (extinction coefficient)

≥15000 at 500-516 nm in water at 0.04 g/L

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

[Na+].[Na+].CC(=O)Nc1ccc(cc1)N=Nc2cc3c(O)cc(NC(=O)Nc4ccc5c(O)c(N=Nc6ccccc6)c(cc5c4)S([O-])(=O)=O)cc3cc2S([O-])(=O)=O

InChI

1S/C35H27N7O10S2.2Na/c1-19(43)36-22-7-9-24(10-8-22)40-42-32-30(54(50,51)52)18-21-16-26(12-14-28(21)34(32)45)38-35(46)37-25-11-13-27-20(15-25)17-29(53(47,48)49)31(33(27)44)41-39-23-5-3-2-4-6-23;;/h2-18,44-45H,1H3,(H,36,43)(H2,37,38,46)(H,47,48,49)(H,50,51,52);;/q;2*+1/p-2

InChI key

NLMHXPDMNXMQBY-UHFFFAOYSA-L

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This Item
365548212407404365
Direct Red 23 Dye content 30 %

Sigma-Aldrich

212490

Direct Red 23

Direct Red 80 Dye content 25 %

Sigma-Aldrich

365548

Direct Red 80

Direct Blue 71 Dye content 50 %

Sigma-Aldrich

212407

Direct Blue 71

Procion® Red MX-5B Dye content 40 %

Sigma-Aldrich

404365

Procion® Red MX-5B

composition

Dye content, 30%

composition

Dye content, 25%

composition

Dye content, 50%

composition

Dye content, 40%

λmax

507 nm

λmax

528 nm

λmax

594 nm

λmax

538 nm

ε (extinction coefficient)

≥15000 at 500-516 nm in water at 0.04 g/L

ε (extinction coefficient)

≥12000 at 277-283 nm in H2O, ≥15000 at 223-235 nm in H2O, ≥32000 at 524-530 nm in H2O

ε (extinction coefficient)

≥15000 at 283-289 nm in water at 0.01 g/L, ≥30000 at 582-588 nm in water at 0.01 g/L

ε (extinction coefficient)

-

application(s)

diagnostic assay manufacturing
hematology
histology

application(s)

diagnostic assay manufacturing
hematology
histology

application(s)

diagnostic assay manufacturing
hematology
histology

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

storage temp.

room temp

storage temp.

room temp

storage temp.

room temp

General description

Direct Red 23 consists of a diazo group and it is toxic and carcinogenic in nature.

Application

Direct Red 23 has been used to stain water-hydrated seeds.

Storage Class Code

11 - Combustible Solids

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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