4,4'-Diphenylmethandiisocyanat,Isomere, Homologe und Mischungen Chemische Eigenschaften,Einsatz,Produktion Methoden
R-S?tze Betriebsanweisung:
R20:Gesundheitssch?dlich beim Einatmen.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
R42:Sensibilisierung durch Einatmen m?glich.
S-S?tze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S28:Bei Berührung mit der Haut sofort abwaschen mit viel . . . (vom Hersteller anzugeben).
S38:Bei unzureichender Belüftung Atemschutzger?t anlegen.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn m?glich, dieses Etikett vorzeigen).
Chemische Eigenschaften
liquid
Verwenden
Poly[methylene(polyp?henyl Isocyanate)?] is an engineering polymer used in the synthesis of highly resiliant polyurethane foams with flame retardancy.Environmental toxin on US EPA Toxic Release Inventory list (TRI) list.
Definition
A polymer of diphenylmethane-4,4′-diisocyanate.
Application
Polymethylene polyphenyl polyisocyanate can be used as a cross-linker to DNA and CTMA based films for the fabrication of biomaterials for organic electronic devices. It can be used in the formation of polyurethane based materials for non-linear optical applications.
Allgemeine Beschreibung
Dark-brown liquid with a weak odor. Sinks in water.
Air & Water Reaktionen
Reacts with water slowly forming heavy scum and liberating carbon dioxide gas. Dangerous pressure can build up if container is sealed.
Reaktivit?t anzeigen
Polymethylene polyphenyl polyisocyanate reacts with water slowly forming heavy scum and liberating carbon dioxide gas. Dangerous pressure can build up if container is sealed. 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].
Hazard
Questionable carcinogen.
Health Hazard
Inhalation causes breathlessness, chest discomfort, and reduced pulmonary function; wheezing, cough, and sputum may also occur. Contact with liquid irritates eyes and skin. Ingestion causes irritation of mouth and stomach.
Brandgefahr
Behavior in Fire: Containers may explode.
Sicherheitsprofil
Moderately toxic by
ingestion. Mildly toxic by inhalation.
Questionable carcinogen with experimental
neoplastigenic data by implant route. When
heated to decomposition it emits toxic
fumes of NOx.
4,4'-Diphenylmethandiisocyanat,Isomere, Homologe und Mischungen Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
