Triethylene glycol dimethyl ether Chemische Eigenschaften,Einsatz,Produktion Methoden
ERSCHEINUNGSBILD
FARBLOSE FLüSSIGKEIT MIT CHARAKTERISTISCHEM GERUCH.
CHEMISCHE GEFAHREN
Bildung explosionsf?higer Peroxide wahrscheinlich. Reagiert sehr heftig mit starken Oxidationsmitteln.
ARBEITSPLATZGRENZWERTE
TLV nicht festgelegt (ACGIH 2005).
MAK nicht festgelegt (DFG 2005).
AUFNAHMEWEGE
Aufnahme in den K?rper durch Inhalation des Aerosols und durch Verschlucken.
INHALATIONSGEFAHREN
Nur ungenügende Angaben vorhanden über die Geschwindigkeit, mit der eine gesundheitssch?dliche Konzentration in der Luft beim Verdampfen bei 20°C erreicht wird.
WIRKUNGEN NACH WIEDERHOLTER ODER LANGZEITEXPOSITION
Tierversuche zeigen, dass die Substanz m?glicherweise fruchtbarkeitssch?digend oder entwicklungssch?digend wirken kann.
LECKAGE
Belüftung. Ausgelaufene Flüssigkeit m?glichst in abdichtbaren Beh?ltern sammeln. Pers?nliche Schutzausrüstung: Atemschutzfilter für organische Gase und D?mpfe.
R-S?tze Betriebsanweisung:
R61:Kann das Kind im Mutterleib sch?digen.
R19:Kann explosionsf?hige Peroxide bilden.
R62:Kann m?glicherweise die Fortpflanzungsf?higkeit beeintr?chtigen.
S-S?tze Betriebsanweisung:
S53:Exposition vermeiden - vor Gebrauch besondere Anweisungen einholen.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn m?glich, dieses Etikett vorzeigen).
Chemische Eigenschaften
Water-white liquid; mild ether odor. D
0.9862 (20/20C), refr index 1.4233 (20C), flash p
232F (111C), bp 216.0C (760mmHg), 153.6C (100
mm Hg), fp ?46C. Completely soluble in water
and hydrocarbons at 20C. May contain peroxides.
Combustible.
Verwenden
Triethylene glycol dimethyl ether is used as a solvent for gases and coupling immiscible liquid. It is also used to prepare perfluoro-triethyleneglycoldimethylether.
Definition
ChEBI: A polyether that consists of dodecane in which the carbon atoms at positions 2, 5, 8 and 11 are replaced by oxygen atoms.
Reaktivit?t anzeigen
TRIETHYLENE GLYCOL DIMETHYL ETHER forms explosive peroxides on prolonged exposure to air. Its decomposition products may be sensitive to shock. The bulk chemical is stable for 2 weeks at temperatures up to 140° F when protected from light. TRIETHYLENE GLYCOL DIMETHYL ETHER is incompatible with strong oxidizers. TRIETHYLENE GLYCOL DIMETHYL ETHER is also incompatible with strong acids. TRIETHYLENE GLYCOL DIMETHYL ETHER may react with peroxides, oxygen, nitric acid and sulfuric acid. .
Toxikologie
Triethylene glycol dimethyl ether (triEGdiME) is a widely used organic solvent. It is structurally related to several compounds that produce reproductive and developmental toxicity, including teratogenicity in laboratory animals. In the present studies, triEGdiME (0, 75, 125, 175, or 250 mg/kg/day) is administered by gavage in distilled water to timed-pregnant New Zealand white rabbits (15-25 dams/group) during major organogenesis [Gestational Days (gd) 6-19]. In the triEGdiME study, clinical signs of toxicity were minimal, and there was no increased maternal mortality. Maternal body weight and gravid uterine weight were significantly reduced at 250 mg/kg/day, whereas maternal weight gain during treatment was significant. They were depressed at doses of 175 mg/kg/day and above. Prenatal mortality was significantly increased at 250 mg triEGdiME/kg/day. TriEGdiME at doses of 175 and 250 mg/kg/day caused a significant increase in the incidence of malformed fetuses per litter. Malformations noted most frequently in fetuses of normal size included anonychia (missing toenails with no digital abnormalities), abnormally small spleen, and hydronephrosis[1].
l?uterung methode
Reflux it with, and distil it from sodium hydride or LiAlH4. [Beilstein 1 IV 2401.]
Triethylene glycol dimethyl ether Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
