2-(Diethylamino)ethanol Chemische Eigenschaften,Einsatz,Produktion Methoden
ERSCHEINUNGSBILD
FARBLOSE, HYGROSKOPISCHE FLüSSIGKEIT MIT CHARAKTERISTISCHEM GERUCH.
CHEMISCHE GEFAHREN
Beim Verbrennen Bildung giftiger Gase (Stickstoffoxide). Reagiert mit starken Säuren und starken Oxidationsmitteln.
ARBEITSPLATZGRENZWERTE
TLV: 2 ppm (als TWA); Hautresorption; (ACGIH 2005).
MAK: 5 ppm, 24 mg/m? Spitzenbegrenzung: überschreitungsfaktor I(1); Hautresorption; Schwangerschaft: Gruppe C; (DFG 2006).
AUFNAHMEWEGE
Aufnahme in den Körper durch Inhalation, über die Haut und durch Verschlucken.
INHALATIONSGEFAHREN
Beim Verdampfen bei 20°C kann sehr schnell eine gesundheitsschädliche Kontamination der Luft eintreten.
WIRKUNGEN BEI KURZZEITEXPOSITION
WIRKUNGEN BEI KURZZEITEXPOSITION: Die Substanz verätzt die Augen und reizt stark die Haut und die Atemwege. Möglich sind Auswirkungen auf das Nervensystem.
LECKAGE
Ausgelaufene Flüssigkeit möglichst in abdichtbaren Behältern sammeln. Reste mit viel Wasser wegspülen. Persönliche Schutzausrüstung: Atemschutzfilter für organische Gase und Dämpfe.
R-Sätze Betriebsanweisung:
R10:Entzündlich.
R20/21/22:Gesundheitsschädlich beim Einatmen,Verschlucken und Berührung mit der Haut.
R34:Verursacht Verätzungen.
S-Sätze Betriebsanweisung:
S25:Berührung mit den Augen vermeiden.
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 möglich, dieses Etikett vorzeigen).
Chemische Eigenschaften
Colorless liquid with a nauseating, weak, ammonia odor; hygroscopic; very soluble in water; soluble in alcohol, ether acetone, benzene, and petroleum ether.
Physikalische Eigenschaften
Colorless, hygroscopic liquid with a nauseating, ammonia-like odor. Experimentally determined
detection and recognition odor threshold concentrations were 50 μg/m
3 (11 ppb
v) and 190 μg/m
3
(40 ppb
v), respectively (Hellman and Small, 1974).
Verwenden
Water-soluble salts; textile softeners; antirust formulations; fatty acid derivatives;
pharmaceuticals; curing agent for resins; emulsifying agents in acid media; organic synthesis.
Vorbereitung Methode
2-Diethylaminoethanol (DEAE) is a tertiary amine produced by reaction of
ethylene oxide or ethylene chlorhydrin and diethylamine (RTECS 1988). Itokazu
(1987) has modified this process for manufacture of DEAE without eventual
discoloration. Production in this country exceeds 2866 pounds per year (HSDB
1988).
Definition
ChEBI: 2-diethylaminoethanol is a member of the class of ethanolamines that is aminoethanol in which the hydrogens of the amino group are replaced by ethyl groups. It is a member of ethanolamines, a tertiary amino compound and a primary alcohol. It derives from an ethanolamine. It derives from a hydride of a triethylamine.
Allgemeine Beschreibung
A colorless liquid. Flash point 103-140°F. Less dense than water . Vapors heavier than air. Produces toxic oxides of nitrogen during combustion. Causes burns to the skin, eyes and mucous membranes.
Air & Water Reaktionen
Flammable. Soluble in water. Diethylaminoethanol is sensitive to moisture. Slowly hydrolyzes.
Reaktivität anzeigen
Diethylaminoethanol is an aminoalcohol. Amines are chemical bases. They neutralize acids to form salts plus water. These acid-base reactions are exothermic. The amount of heat that is evolved per mole of amine in a neutralization is largely independent of the strength of the amine as a base. Amines may be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen is generated by amines in combination with strong reducing agents, such as hydrides. Diethylaminoethanol can react with strong oxidizers and acids.
Health Hazard
INHALATION: Irritation of mucous membranes.
EYES: Corrosive, causes intense pain.
SKIN: Severe irritation. May cause allergic skin reaction.
INGESTION: Gastrointestinal irritation.
Breathing Diethylaminoethanol can irritate the nose, throat and lungs causing coughing, wheezing and/or shortness of breath.
Industrielle Verwendung
Diethylaminoethanol(DEAE) is used in the pharmaceutical industry for the manufacture of the local anesthetics procaine and chloroquine; and in the chemical industry for the manufacture of water-soluble salts, fatty-acid derivatives, derivatives containing tertiary amine groups, emulsifiers, special soaps, cosmetics and textiles and fibers (HSDB 1988). It also is used in chromatography in chemistry and biochemistry laboratories (DEAE is useful as an ion-exchange matrix; DEAE-cellulose columns are used for purification of proteins and DNA, and DEAE-silica for phospholipid separations). In other industries DEAE is used in some antirust compositions and in textile softeners (Hawley 1977; HSDB 1988). It is also used widely as a steam additive in large buildings requiring humidifiers.
Sicherheit(Safety)
There is a lack of data regarding human toxicity of Diethylaminoethanol. The greatest industrial hazard however, is thought to be to the eyes from contact with the fluid, which is comparable in severity to ammonium hydroxide as an eye irritant (ACGIH 1980).
Diethylaminoethanol(DEAE) is permitted by the U.S. Food and Drug Administration for some applications as a food additive. Applications include protective coatings for fresh fruits and vegetables, and as an additive in steam which directly contacts food products (excluding milk products). The National Research Council Committee on Toxicology (NRC 1983) has concluded that data on long-term, low-level airborne exposures of animals to DEAE for extrapolation to human health risks are severely lacking. This, combined with the lack of data concerning the concentrations of DEAE in humidified buildings did not allow sufficient information to set guidelines for long-term exposures or estimate the health risks from such exposures. The NRC was able to make some general recommendations based on the assumption that the nitrosation reactions (below) may occur, and that the amine should be considered as hazardous as the nitroso compound formed from it.
Carcinogenicity
DEAE was not mutagenic or clastogenic in
a variety of in vitro and in vivo assays.
The 2003 ACGIH threshold limit valuetime-
weighted average (TLV-TWA) for 2-
diethylaminoethanol is 2 ppm (9.6mg/m3) with
a notation for skin absorption.
Environmental Fate
DEAE, when compared with other amino alcohols, was observed to be biologically
undecomposable in an experiment using activated sludge (HSDB 1988).
Stoffwechsel
The absorption of DEAE (administered orally as DEAE acid malate or 'Cerebrol') in healthy adult rats is very rapid, reaching a peak plasma level in 30 min (Bismut
et al 1986). The biological half-life is 3.5 h with 39% of the excreted product
appearing in the urine after 48 h (Bismut et al 1986). In an earlier study, Schulte et
al (1972) demonstrated that in rats, following a single oral dose, excretion occurs
mainly through the kidneys with 37-59% being eliminated in the first 24 h. After
48 h, elimination was independent of dose. The brain and spinal cord showed the
highest concentration after 7 d. Metabolites produced were observed to be diethylaminoethanol
N-oxide, diethylaminoacetic acid, and ethylaminoethanol.
2-(Diethylamino)ethanol Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
