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202029 Sigma-Aldrich

Metanil Yellow

Dye content 70 %

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

  • CAS Number 587-98-4

  • Empirical Formula (Hill Notation) C18H14N3NaO3S

  • Molecular Weight 375.38

  •  Colour Index Number 13065

  •  Beilstein/REAXYS Number 3831568

  •  EC Number 209-608-2

  •  MDL number MFCD00007486

  •  PubChem Substance ID 24852034

  •  NACRES NA.47

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Properties

Related Categories Analytical Reagents, Analytical/Chromatography, Cell Biology, Hematology and Histology, Indicators,
form   solid
composition   Dye content, 70%
application(s)   hematology: suitable
  histology: suitable
  titration: suitable
pH range   1.5 - 2.7, red to yellow
λmax   414 nm
ε (extinction coefficient)   ≥18500 at 415.0-419.0 nm
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

Description

Application

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

Packaging

100 g in glass bottle

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.

Safety & Documentation

Safety Information

Symbol 
GHS07  GHS07
Signal word 
Warning
Hazard statements 
Precautionary statements 
Personal Protective Equipment 
RIDADR 
NONH for all modes of transport
WGK Germany 
2
RTECS 
DB7329500

Documents

Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Titrette from Brand
Protocols & Articles
Peer-Reviewed Papers
15

References

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