Mecrilat Chemische Eigenschaften,Einsatz,Produktion Methoden
ERSCHEINUNGSBILD
FARBLOSE FLüSSIGKEIT.
CHEMISCHE GEFAHREN
Schnelle Polymerisation, besonders unter Einfluss von Feuchtigkeit. Zersetzung beim Erhitzen oder Verbrennen unter Bildung giftiger und reizender Rauche/Gase mit Stickstoffoxiden.
ARBEITSPLATZGRENZWERTE
TLV: 0,2 ppm (als TWA) (ACGIH 2008).
MAK: 2 ppm 9,2 mg/m? Spitzenbegrenzung: überschreitungsfaktor I(1); Schwangerschaft: Gruppe D (DFG 2008).
AUFNAHMEWEGE
Aufnahme in den Körper durch Inhalation der Dämpfe.
INHALATIONSGEFAHREN
Beim Verdampfen bei 20°C tritt langsam eine gesundheitsschädliche Kontamination der Luft ein.
WIRKUNGEN BEI KURZZEITEXPOSITION
WIRKUNGEN BEI KURZZEITEXPOSITION: Der Dampf reizt die Augenund die Atemwege. Inhalation des Dampfes kann zu Asthma führen. Bleibt sofort an biologischem Gewebe haften.
WIRKUNGEN NACH WIEDERHOLTER ODER LANGZEITEXPOSITION
Wiederholter oder andauernder Hautkontakt kann Dermatitis hervorrufen.
LECKAGE
Belüftung. Zündquellen entfernen. NICHT in die Kanalisation spülen.Flüssigkeit in Sand oder inertem Absorptionsmittel aufnehmen. Fest werden lassen. Gesichtsschutz benutzen. Persönliche Schutzausrüstung: Atemschutzfilter für organische Gase und Dämpfe.
R-Sätze Betriebsanweisung:
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
S-Sätze Betriebsanweisung:
S23:Gas/Rauch/Dampf/Aerosol nicht einatmen(geeignete Bezeichnung(en) vom Hersteller anzugeben).
S24/25:Berührung mit den Augen und der Haut vermeiden.
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
Beschreibung
Methyl cyanoacrylate (MCA) is an organic compound that contains several functional groups, a methyl ester, a nitrile, and an alkene. It is a colorless liquid with low viscosity. Its chief use is as the main component of cyanoacrylate glues.It can be encountered under many trade names. Methyl cyanoacrylate is less commonly encountered than ethyl cyanoacrylate.
It is soluble in acetone, methyl ethyl ketone, nitro methane, and dichloromethane. MCA polymerizes rapidly in presence of moisture.
Chemische Eigenschaften
Colorless liquid.
Verwenden
Surgical aid (tissue adhesive).
Allgemeine Beschreibung
Clear slightly yellow liquid.
Air & Water Reaktionen
Insoluble in water.
Reaktivität anzeigen
CYANOACRYLIC ACID METHYL ESTER is an unsaturated aliphatic nitrile and ester. Nitriles may polymerize in the presence of metals and some metal compounds. They are incompatible with acids; mixing nitriles with strong oxidizing acids can lead to extremely violent reactions. Nitriles are generally incompatible with other oxidizing agents such as peroxides and epoxides. The combination of bases and nitriles can produce hydrogen cyanide. Nitriles are hydrolyzed in both aqueous acid and base to give carboxylic acids (or salts of carboxylic acids). These reactions generate heat. Peroxides convert nitriles to amides. Nitriles can react vigorously with reducing agents. Acetonitrile and propionitrile are soluble in water, but nitriles higher than propionitrile have low aqueous solubility. They are also insoluble in aqueous acids. Esters react with acids to liberate heat along with alcohols and acids. Strong oxidizing acids may cause a vigorous reaction that is sufficiently exothermic to ignite the reaction products. Heat is also generated by the interaction of esters with caustic solutions. Flammable hydrogen is generated by mixing esters with alkali metals and hydrides.
Hazard
Toxic by inhalation. Eye and upper respi-ratory tract irritant.
Health Hazard
Methyl 2-cyanoacrylate is an
irritant of the eyes and nose and can induce
occupational asthma.
Brandgefahr
Flash point data for CYANOACRYLIC ACID METHYL ESTER are not available but CYANOACRYLIC ACID METHYL ESTER is probably non-flammable.
Sicherheitsprofil
Moderately toxic by
ingestion and inhalation routes.
Experimental reproductive effects. A human
eye irritant. Can bond the eyelids or skin
surfaces instantly. Mutation data reported.
When heated to decomposition it emits
toxic fumes of NOx and CN-.
Sicherheit(Safety)
Heating the polymer causes depolymerization of the cured MCA, producing gaseous products strongly irritant to lungs and eyes.
mögliche Exposition
Methyl 2-cyanoacrylate is used in production of coatings and textiles; in the manufacture of
quick-setting, high-strength, adhesive cements. Often found
around the home; bonds eyes and skin in seconds. Keep out
of the reach of children.
Versand/Shipping
UN3334 Aviation regulated liquid, n.o.s., Hazard
class: 9; Labels: 9-Miscellaneous hazardous material.
Technical Name Required.
Inkompatibilitäten
Compounds of the carboxyl group react
with all bases, both inorganic and organic (i.e., amines)
releasing substantial heat, water and a salt that may be
harmful. Incompatible with arsenic compounds (releases
hydrogen cyanide gas), diazo compounds, dithiocarbamates, isocyanates, mercaptans, nitrides, and sulfides
(releasing heat, toxic, and possibly flammable gases), thiosulfates and dithionites (releasing hydrogen sulfate and oxides of sulfur). Reacts violently with water, bases, and
peroxides. Contact with alcohols, water, amines, and alkalis
can cause rapid polymerization
Mecrilat Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
