1-Isothiocyanatonaphthalin Chemische Eigenschaften,Einsatz,Produktion Methoden
R-S?tze Betriebsanweisung:
R20/21:Gesundheitssch?dlich beim Einatmen und bei Berührung mit der Haut.
R25:Giftig beim Verschlucken.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
R42:Sensibilisierung durch Einatmen m?glich.
R23/24/25:Giftig beim Einatmen, Verschlucken und Berührung mit der Haut.
S-S?tze Betriebsanweisung:
S22:Staub nicht einatmen.
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36/37:Bei der Arbeit geeignete Schutzhandschuhe und Schutzkleidung tragen.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn m?glich, dieses Etikett vorzeigen).
S24/25:Berührung mit den Augen und der Haut vermeiden.
Beschreibung
1-Napthylisothiocyanate is a toxic chemical that has been used
to create experimental cholestasis in rodents. Laboratory
studies have also shown that 1-napthylisothiocyanate can act as
a chemoprotectant in rodents challenged with a tumorinducing
agent such as phorbol-12 myristate 13-acetate.
Chemische Eigenschaften
white crystalline powder
Verwenden
1-Naphthyl isothiocyanate is a tool for the study of liver damage which causes bile stasis and hyperbilirubinemia acutely and bile duct hyperplasia and biliary cirrhosis chronically, with changes in hepatocyte function.
Allgemeine Beschreibung
Odorless white needles or powder. Tasteless.
Air & Water Reaktionen
1-Naphthyl isothiocyanate is moisture sensitive. . Undergoes slow hydrolysis. Insoluble in water.
Reaktivit?t anzeigen
Isocyanates and thioisocyanates, such as 1-Naphthyl isothiocyanate, are incompatible with many classes of compounds, reacting exothermically to release toxic gases. Reactions with amines, aldehydes, alcohols, alkali metals, ketones, mercaptans, strong oxidizers, hydrides, phenols, and peroxides can cause vigorous releases of heat. Acids and bases initiate polymerization reactions in these materials. Some isocyanates react with water to form amines and liberate carbon dioxide. Base-catalysed reactions of isocyanates with alcohols should be carried out in inert solvents. Such reactions in the absence of solvents often occur with explosive violence, [Wischmeyer(1969)].
Brandgefahr
Flash point data for 1-Naphthyl isothiocyanate is not available, but 1-Naphthyl isothiocyanate is probably combustible.
Environmental Fate
Naphthylisothiocyanate is moisture sensitive and insoluble in
water. The hydrolysis rate is slow.
l?uterung methode
Crystallise the isothiocyanate from hexane (1g in 9 mL). It forms white needles and is soluble in most organic solvents but is insoluble in H2O. It is absorbed through the skin and may cause dermatitis. [Cymmerman-Craig et al. Org Synth Coll Vol IV 700 1963, Beilstein 12 H 1244, 12 III 2948.]
1-Isothiocyanatonaphthalin Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
