Anhydrous ether

Saturated and aromatic hydrocarbons Ethers Anhydrous calcium chloride anhydrous calcium sulphate metallic sodium phosphorus pentoxide. 

Hydrogenation of Acetaldehyde. Acetaldehyde made from acetylene can be hydrogenated to ethanol with the aid of a supported nickel catalyst at 150°C (156). A large excess of hydrogen containing 0.3% of oxygen is recommended to reduce the formation of ethyl ether. Anhydrous ethanol has also been made by hydrogenating acetaldehyde over a copper-on-pumice catalyst (157). 

General Considerations. The following chemicals were commercially available and used as received 3,3,3-Triphenylpropionic acid (Acros), 1.0 M LiAlH4 in tetrahydrofuran (THF) (Aldrich), pyridinium dichromate (Acros), 2,6 di-tert-butylpyridine (Acros), dichlorodimethylsilane (Acros), tetraethyl orthosilicate (Aldrich), 3-aminopropyltrimethoxy silane (Aldrich), hexamethyldisilazane (Aldrich), tetrakis (diethylamino) titanium (Aldrich), trimethyl silyl chloride (Aldrich), terephthaloyl chloride (Acros), anhydrous toluene (Acros), and n-butyllithium in hexanes (Aldrich). Anhydrous ether, anhydrous THF, anhydrous dichloromethane, and anhydrous hexanes were obtained from a packed bed solvent purification system utilizing columns of copper oxide catalyst and alumina (ether, hexanes) or dual alumina columns (tetrahydrofuran, dichloromethane) (9). Tetramethylcyclopentadiene (Aldrich) was distilled over sodium metal prior to use. p-Aminophenyltrimethoxysilane (Gelest) was purified by recrystallization from methanol. Anhydrous methanol (Acros) was... 

Materials required Dry plant material, methanol, diethyl ether, anhydrous Na2C03 and 2N HC1 (HPLC grade), N2, distilled water, Amberlite IR-45 (OH) ion-exchange resin (Rohm and Haas Company, Philadelphia, USA), graduated tube, Erlenmeyer flask (100 ml), filter paper, funnels, separatory funnels, rotary evaporator, mill, water bath, shaker, sieve of 0.5 mm in diameter, pipette of 1,2 and 10 ml, test tube of 20 ml. 

Amresco acryl-40, see Acrylamide AMS, see a-Methylstyrene n-Amyl acetate, see Amyl acetate Amyl acetic ester, see Amyl acetate Amyl acetic ether, see Amyl acetate Amylene, see 1-Pentene a-n-Amylene, see 1-Pentene p-n-Amylene, see cis-2-Pentene cis-p-Amylene, see cis-2-Pentene frans-p-Amylene, see trans-2-Venlene sec-Amyl ethanoate, see Amyl acetate Amyl ethyl ketone, see 5-Methyl-3-heptanone Amyl hydride, see Pentane Amyl methyl ketone, see 2-Heptanone n-Amyl methyl ketone, see 2-Heptanone AN, see Acrylonitrile Anaesthetic ether, see Ethyl ether Anamenth, see Trichloroethylene Anduron, see Diuron Anesthenyl, see Methylal Anesthesia ether, see Ethyl ether Anesthetic ether, see Ethyl ether Anhydrous ammonia, see Ammonia Aniline oil, see Aniline Anilinobenzene, see 4-Aminobiphenyl Anilinomethane, see Methylaniline 2-Anidine, see o-Anisidine 4-Anisidine, see p-Anisidine 2-Anisylamine, see o-Anisidine... 

Methyl Chloromethyl Ether, Anhydrous Methyl Cyanide... 

These must be glycerol free. A solvent extraction procedure must be used prior to GC-MS [2, 5, 6]. If the sample is prepared with ion-exchange chromatography, the glycerol will remain in the neutral fraction and not be detected by GC-MS [2, 5]. Hydrochloric acid (5 N), pH paper, sodium sulfate (anhydrous), ethyl acetate (free of contaminants), diethyl ether (anhydrous, peroxide-free, and free of contaminants except 2,6-ditertbutylcresol, which is an antioxidant found in all ether), and malonic acid (26.25 mg/50 ml methanol). 

Diethyl Ether. Anhydrous acid and ether may explode on contact.9... 

In a particular example, the following components were employed the crude product of dehalogenation step (C15 allene) 76.2 grams Na 13.5 grams (0.59 gram-atoms) NH3 700 ml ether (anhydrous) 700 ml, NH2CH2CH2NH2 280 ml (dried over molecular sieves). 

Ethane, 1-bromo-2-ethoxy-, 23, 32 Ethanolamine, 26, 38 Ethanol, 2-isopropylamino-, 26, 38 Ether, anhydrous, 22, 57 Ether, butyl o-nitrophenyl, 25, 9 /3-Ethoxyethyl alcohol, 23, 32 /3-Ethoxyethyl bromide, 23, 32, 33 /3-Ethoxyethyl cyanide, 23, 33 Ethoxymagnesiomalonic ester, 25, 73 2-Ethoxy-1-naphthaldehyde, 20,11 6-Ethoxy-8-nitroquinoline, 27, 52 /3-Ethoxypropionaldehyde acetal,... 

Diethyl ether (anhydrous) from Mallinckrodt Inc., dimethylamine (anhydrous from Eastman Chemical Co.) and phosphoryl chloride 1 Baker Analyzed Reagent from J. T. Baker Chemical Co. were used without further purification. 

Hazards Use proper ventilation when handling ammonia, ether anhydrous or its solutions, and avoid inhalation of the vapors. 

Ethyl ether anhydrous, reagent grade Fisher E-138. 

They are under study for the chemical dehalo-genation of herbicides, insecticides, PCBs, chemical warfare agents and residues, and the like. Solvated electrons are produced when alkali (e.g., Na) or alkaline earth (e.g., Ca) metals dissolve in solvents such as NH3, amines and ethers. Anhydrous ammonia is often the solvent of choice because it is easily recycled, and the solvated electrons exhibit a long half-life in it (approximately 300 h). Quite the opposite, the half-life of the electrons in pure water is in the order of 100 milliseconds, which hampers their use in aqueous media. 

SYNS CHLORDIMETHYLETHER (CZECH) CMME DIMETHYLCHLOROETHER ETHER METHYLIQUE MONOCHLORE (FRENCH) METHYLCHLOROMETH-YL ETHER (DOT) METHYL CHLOROMETHYL ETHER, anhydrous pOT) MONOCHLORODIMETHYL ETHER (MAK) RCRA WASTE NUMBER U046... 

METHYL CHLOROFORM see MIH275 METHYL CHLOROFOR LATE (DOT) see MIGOOO METHYLCHLOROMETHYL ETHER (DOT) see CIO250 METHYL CHLOROMETHYL ETHER, anhydrous (DOT) see CIO250... 

---