Trimethylaluminium Chemische Eigenschaften,Einsatz,Produktion Methoden
R-S?tze Betriebsanweisung:
R11:Leichtentzündlich.
R14:Reagiert heftig mit Wasser.
R17:Selbstentzündlich an der Luft. Spontaneously flammable in air.
R34:Verursacht Ver?tzungen.
R50/53:Sehr giftig für Wasserorganismen, kann in Gew?ssern l?ngerfristig sch?dliche Wirkungen haben.
R65:Gesundheitssch?dlich: kann beim Verschlucken Lungensch?den verursachen.
R67:D?mpfe k?nnen Schl?frigkeit und Benommenheit verursachen.
R14/15:Reagiert heftig mit Wasser unter Bildung hochentzündlicher Gase.
R63:Kann das Kind im Mutterleib m?glicherweise sch?digen.
R48/20:Gesundheitssch?dlich: Gefahr ernster Gesundheitssch?den bei l?ngerer Exposition durch Einatmen.
R51/53:Giftig für Wasserorganismen, kann in Gew?ssern l?ngerfristig sch?dliche Wirkungen haben.
R20:Gesundheitssch?dlich beim Einatmen.
R62:Kann m?glicherweise die Fortpflanzungsf?higkeit beeintr?chtigen.
S-S?tze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn m?glich, dieses Etikett vorzeigen).
S61:Freisetzung in die Umwelt vermeiden. Besondere Anweisungen einholen/Sicherheitsdatenblatt zu Rate ziehen.
S62:Bei Verschlucken kein Erbrechen herbeiführen. Sofort ?rztlichen Rat einholen und Verpackung oder dieses Etikett vorzeigen.
S24/25:Berührung mit den Augen und der Haut vermeiden.
S16:Von Zündquellen fernhalten - Nicht rauchen.
S43:Zum L?schen . . . (vom Hersteller anzugeben) verwenden (wenn Wasser die Gefahr erh?ht, anfügen: "Kein Wasser verwenden").
S60:Dieses Produkt und sein Beh?lter sind als gef?hrlicher Abfall zu entsorgen.
S33:Ma?nahmen gegen elektrostatische Aufladungen treffen.
S25:Berührung mit den Augen vermeiden.
S24:Berührung mit der Haut vermeiden.
Chemische Eigenschaften
The aluminum alkyls are highly flammable and reactive, colorless to yellow liquids at room temperature. The lighter trialkylaluminums ignite spontaneously in air. They are normally supplied and used in a 20% solution with a hydrocarbon solvent, such as hexane, heptane, benzene, toluene. Properties may depend on solvent. Reacts violently with water.
Verwenden
Trimethylaluminium can be used as catalyst for olefin polymerization, pyrophoric fuel, manufacture of straight-chain primary alcohols and olefins, to produce luminous trails in upper atmosphere to track rockets.
Definition
A colorless liquid produced by the sodium
reduction of dimethyl aluminum chloride.
It ignites spontaneously on contact with air
and reacts violently with water, acids,
halogens, alcohols, and amines. Aluminum
alkyls are used in the Ziegler process for
the manufacture of high-density polyethene.
Health Hazard
Trimethylaluminum and related alkylaluminum reagents are pyrophoric materials that can react explosively with the moisture in tissues, causing severe burns. The heat of reaction can also ignite the methane gas generated, resulting in thermal burns. Alkylaluminum reagents are corrosive substances, and contact is extremely destructive to the eyes, skin, and mucous membranes. Inhalation of trimethylaluminum and other volatile alkylaluminum compounds may cause severe damage to the respiratory tract and can lead to fatal pulmonary edema.
Flammability and Explosibility
Trimethylaluminum is pyrophoric and burns violently on contact with air or water.
Other alkylaluminum reagents show similar behavior, although most are not as
volatile as trimethylaluminum. Water or CO2 fire extinguishers must not be used to
put out fires involving trialkylaluminum reagents. Instead, dry chemical powders
such as bicarbonate, Met-L-X?, or inert smothering agents such as sand or graphite
should be used to extinguish fires involving trialkylaluminum compounds.
m?gliche Exposition
Alkyl aluminum compounds are used as components of olefin polymerization catalysts. They are also used in the synthesis of higher primary alcohols and in pyrophoric fuels, as a catalyst in making ethylene gas; and in plating aluminum.
Lager
Safety glasses, impermeable gloves, and a fire-retardant laboratory coat
should be worn at all times when working with these compounds. Trialkylaluminum
reagents should be handled only under an inert atmosphere.
Versand/Shipping
ntial fire or explosion hazard. Shipping: UN3399 Organometallic substance, liquid, water-reactive, flammable, Hazard Class: 4.3; Labels: 4.3
Dangerous Dangerous when wet material, 3-Flammable liquid, technical name Required. UN3051-Spontaneously combustible. Also, this material is dangerous when wet. (Note: this number does not appear in the 49/CFR HazMat tables).
Inkompatibilit?ten
The lighter trialkylaluminums ignite spontaneously in air; can self-heat in the air at room temperature without any added energy and may ignite. These compounds are strong reducing agents. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides. Incompatible with water, oxygen (air), acids, alcohols, phenols, amines, carbon dioxide; sulfur oxides; halogenated compounds, and many other substances
Waste disposal
Careful incineration
Trimethylaluminium Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
