Natrium-3-(p-anilinophenylazo)benzolsulfonat Chemische Eigenschaften,Einsatz,Produktion Methoden
R-Sätze Betriebsanweisung:
R43:Sensibilisierung durch Hautkontakt möglich.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
S-Sätze Betriebsanweisung:
S22:Staub nicht einatmen.
S24/25:Berührung mit den Augen und der Haut vermeiden.
S36/37:Bei der Arbeit geeignete Schutzhandschuhe und Schutzkleidung tragen.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
Beschreibung
Metanil yellow is a yellow monoazo dye. This coloring
agent is used in leather and wood stains, and was also
employed as a food dye in India.
Chemische Eigenschaften
orange powder
Verwenden
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.
Definition
ChEBI: An organic sodium salt having 3-[(4-anilinophenyl)diazenyl]benzene-1-sulfonate as the counterion. Used in one variant of Masson's trichrome to stain collagen yellow in contrast to the red muscle, but is not in common used.
Allgemeine Beschreibung
Metanil yellow is an azo dye, which is used as a counterstain in PAS (periodic acid-Schiff) or iron-hematoxylin stained sections to increase contrast. At pH 1.2, metanil yellow is red in color, whereas in pH 2.3, it is yellow in color.
Kontakt-Allergie
Metanil yellow is a yellow monoazoic dye. This color ing agent is used in leather and wood stains, and is also employed as a food dye in India.
Sicherheitsprofil
Moderately toxic by
intraperitoneal route. Experimental
reproductive effects. Human mutation data
reported. When heated to decomposition it
emits toxic fumes of SOx, NOx, and NazO.
See also AROMATIC AMINES and
SULFONATES.
läuterung methode
It can be salted out from water three times with sodium acetate, then repeatedly extracted with EtOH [McGrew & Schneider J Am Chem Soc 72 2547 1950]. [Beilstein 16 II 168.]
Natrium-3-(p-anilinophenylazo)benzolsulfonat Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
