64010

Sigma-Aldrich

Metanil Yellow

for microscopy (Hist.), indicator (pH 1.2-2.3)

Synonym(s):
Acid Yellow 36, 3-(4-Anilinophenylazo)benzenesulfonic acid sodium salt
Empirical Formula (Hill Notation):
C18H14N3NaO3S
CAS Number:
Molecular Weight:
375.38
Colour Index Number:
13065
Beilstein/REAXYS Number:
3831568
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.47
Pricing and availability is not currently available.

grade

for microscopy (Hist.)
indicator (pH 1.2-2.3)

Quality Level

form

powder

application(s)

hematology: suitable
histology: suitable

solubility

methanol: 0.01 g/10 mL, orange to very deep orange

εmax

≥500 at 409-419  nm in methanol

Featured Industry

Diagnostic Assay Manufacturing

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

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Related Categories

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.

Pictograms

Corrosion

Signal Word

Danger

Hazard Statements

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

Hazard Codes

Xi

Risk Statement

43

Safety Statement

36/37

RIDADR

NONH for all modes of transport

WGK Germany

WGK 2

Certificate of Analysis
Certificate of Origin
An improved stain for connective tissue cells in plastic-embedded sections.
Laboratory Medicine, 10, 783-785 (1979)
Photocatalytic degradation of azo dye Metanil Yellow: optimization and kinetic modeling using a chemometric approach.
Applied Catalysis. B, Environmental, 77, 1-11 (2007)
Enhancement of histological detail using metanil yellow as counterstain in periodic acid Schiff's hematoxylin staining of glycol methacrylate tissue sections.
Quintero-Hunter I, et al.
Biotechnic & Histochemistry, 66, 169-169 (1991)
Cellular localization of latent murine cytomegalovirus.
Koffron AJ, et al.
Journal of Virology, 72, 95-95 (1998)
O Anjaneya et al.
Journal of hazardous materials, 190(1-3), 351-358 (2011-04-08)
Two different bacterial strains capable of decolorizing a highly water soluble azo dye Metanil Yellow were isolated from dye contaminated soil sample collected from Atul Dyeing Industry, Bellary, India. The individual bacterial strains Bacillus sp. AK1 and Lysinibacillus sp. AK2...

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