Diethylene Glycol Dibutyl Ether Chemische Eigenschaften,Einsatz,Produktion Methoden
S-S?tze Betriebsanweisung:
S23:Gas/Rauch/Dampf/Aerosol nicht einatmen(geeignete Bezeichnung(en) vom Hersteller anzugeben).
S24/25:Berührung mit den Augen und der Haut vermeiden.
Chemische Eigenschaften
clear colorless to yellowish liquid
Verwenden
Butyl diglyme is used to extract gold from
hydrochloric acid solutions containing other metals. Treatment of the diglyme
extract with hydrogen or oxalic acid precipitates the ionic gold as gold powder.
Allgemeine Beschreibung
Colorless liquid. Floats on water.
Air & Water Reaktionen
Oxidizes readily in air to form unstable peroxides that may explode spontaneously [Bretherick, 1979 p.151-154, 164]. Insoluble in water.
Reaktivit?t anzeigen
Bis(2-butoxyethyl)ether may react violently with strong oxidizing agents. Incompatible with nitric acid. May form salts with strong acids and addition complexes with Lewis acids. In other reactions, which typically involve the breaking of the carbon-oxygen bond, relatively inert.
Health Hazard
May be harmful by inhalation, ingestion and skin absorption. Causes eye and skin irritation. Material is irritating to mucous membrane and upper respiratory tract.
Brandgefahr
Special Hazards of Combustion Products: Vapor may travel considerable distance to a source of ignition and flash back.
Sicherheitsprofil
Moderately toxic by
ingestion. Mddly toxic by skin contact.
Experimental reproductive effects. A skin
and eye irritant. See also GLYCOL
ETHERS. Combustible when exposed to
heat or flame. To fight fire, use foam or
alcohol foam. When heated to decomposition it emits acrid smoke and
irritating fumes.
Synthese
Into 120 g of 60% NaH and 500 ml of toluene were added dropweise 329 g of butyl bromide and 486 g of diethylene glycol butyl ether at 50 ℃. Diethylene glycol dibutyl ether was obtained by distillation (b.p.: 256 ℃. under normal pressure) from the reaction mixture.
l?uterung methode
Dibutylcarbitol is freed from peroxides by slow passage through a column of activated alumina. The eluate is then shaken with Na2CO3 (to remove any remaining acidic impurities), washed with water, and stored with CaCl2 in a dark bottle [Tuck J Chem Soc 3202 1957]. [Beilstein 1 IV 2395.]
Diethylene Glycol Dibutyl Ether Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
