Thermo Scientific Chemicals

Metanil Yellow

Catalog number: A17527.18
50 g, Each
Thermo Scientific Chemicals

Metanil Yellow

Catalog number: A17527.18
50 g, Each
Quantity
Catalog number: A17527.18
also known as A17527-18
Price (USD)
Price: 25.30
Online price: 21.65
Your price:
Quantity
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Chemical Identifiers

CAS
587-98-4
IUPAC Name
sodium 3-{2-[4-(phenylamino)phenyl]diazen-1-yl}benzene-1-sulfonate
Molecular Formula
C18H14N3NaO3S
InChI Key
NYGZLYXAPMMJTE-UHFFFAOYSA-M
SMILES
[Na+].[O-]S(=O)(=O)C1=CC=CC(=C1)N=NC1=CC=C(NC2=CC=CC=C2)C=C1
Specific Absorbance (E 1%/1cm)
≥300 at lambda max (non-U.S. sourced material)
Comment
Material sourced in the U.S. and in other countries
lambda-max (UV-Vis)
431-438nm (water, non-U.S. sourced material); 410-420 nm (methanol, U.S. sourced material)
Appearance (Color)
Yellow to orange
Form
Powder

Description

Metanil Yellow is used as indicator. Metanil yellow is useful in spectrophotometric methods to determine the presence of trace amounts of nitrates and nitrites in solution. The method utilizes the fact that potassium bromate can catalyze the discoloring of Metanil yellow which can then be analyzed by spectrophotometry.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Applications
Metanil Yellow is used as indicator. Metanil yellow is useful in spectrophotometric methods to determine the presence of trace amounts of nitrates and nitrites in solution. The method utilizes the fact that potassium bromate can catalyze the discoloring of Metanil yellow which can then be analyzed by spectrophotometry.

Solubility
Soluble in water (25g/L).

Notes
Store away from strong oxidizing agents. Keep container tightly closed. Store in cool, dry conditions in well sealed containers.
RUO – Research Use Only

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