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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 Registry Number 3831568

  •  EC Number 209-608-2

  •  MDL number MFCD00007486

  •  PubChem Substance ID 24852034

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Properties

Related Categories Analytical Reagents, Analytical/Chromatography, Cell Biology, Hematology and Histology, Indicators,
InChI Key   NYGZLYXAPMMJTE-ANVLNOONSA-M
composition   Dye content, 70%
pH range   1.5 - 2.7, red to yellow
absorption   λmax 414 nm

Description

Packaging

100 g in glass bottle

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.

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

Certificate of Origin


Milli-Q® Water Purification Solutions
Protocols & Articles
Peer-Reviewed Papers
15

References

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