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202029

Metanil Yellow

Dye content 70 %

Synonym(s):

3-(4-Anilinophenylazo)benzenesulfonic acid sodium salt, Acid Yellow 36

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About This Item

Empirical Formula (Hill Notation):
C18H14N3NaO3S
CAS Number:
587-98-4
Molecular Weight:
375.38
EC Number:
209-608-2
UNSPSC Code:
12171500
NACRES:
NA.47
PubChem Substance ID:
24852034
MDL number:
MFCD00007486
Beilstein/REAXYS Number:
3831568
Colour Index Number:
13065
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form

solid

Quality Level

200

composition

Dye content, 70%

technique(s)

titration: suitable

pH

1.5-2.7, red to yellow

λmax

414 nm

ε (extinction coefficient)

≥18500 at 415.0-419.0 nm

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

[Na+].[O-]S(=O)(=O)c1cccc(c1)\N=N\c2ccc(Nc3ccccc3)cc2

InChI

1S/C18H15N3O3S.Na/c22-25(23,24)18-8-4-7-17(13-18)21-20-16-11-9-15(10-12-16)19-14-5-2-1-3-6-14;/h1-13,19H,(H,22,23,24);/q;+1/p-1/b21-20+;

InChI key

NYGZLYXAPMMJTE-ANVLNOONSA-M

Application

Metanil yellow has been used for staining of leukocyte granules. It is also used as a counterstain in microscopic sections.

Biochem/physiol Actions

Metanil yellow is an azo dye. It is used as a counterstain in PAS (periodic acid-Schiff)/iron-hematoxylin stained sections to increase contrast. Metanil yellow changes its color from red at pH 1.2 to yellow at pH 2.3.

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pictograms

Corrosion
GHS05

signalword

Danger

hcodes

H318,H412

Hazard Classifications

Aquatic Chronic 3 - Eye Dam. 1

Storage Class

11 - Combustible Solids

wgk

WGK 2

ppe

dust mask type N95 (US), Eyeshields, Faceshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
BCCN5979
BCCM4865
BCCF8035
MKCJ4314
BCCC2672

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Cellular Localization of Latent Murine Cytomegalovirus
Koffron A J, et.al.
Journal of Virology, 72, 95-103 (1998)
An Improved Stain for Connective Tissue Cells in Plastic-Embedded Sections
Cannon M S
Laboratory Medicine, 10, 783?785-783?785 (1979)
Photocatalytic degradation of azo dye Metanil Yellow: Optimization and kinetic modeling using a chemometric approach
Sleiman M
Applied Catalysis. B, Environmental, 77, 1-2 (2007)
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Global Trade Item Number

SKUGTIN
202029-100G04061838764454