Ethers isopropyl ether

The nature of the initiation step, which may occur in a variety of ways, is not known in all cases. Commonly used ethers such as ethyl ether, isopropyl ether, tetrahydrofuran, and i)-dioxane are particulady prone to form explosive peroxides on prolonged storage and exposure to air and light (see Peroxides AND PEROXY COMPOUNDS, ORGANIC), and should contain antioxidants (qv) to prevent their build-up. One of the exceptions to the peroxide forming tendency of ethers is methyl fert-alkyl ethers such as methyl fert-butyl ether [1634-04-4] (MTBE) and fert-amyl methyl ether [994-05-8] (TAME). Both have shown htde tendency if any to form peroxides (2,8). 

Isopropyl Ether. Isopropyl ether is manufactured by the dehydration of isopropyl alcohol with sulfuric acid. It is obtained in large quantities as a by-product in the manufacture of isopropyl alcohol from propylene by the sulfuric acid process, very similar to the production of ethyl ether from ethylene. Isopropyl ether is of moderate importance as an industrial solvent, since its boiling point Hes between that of ethyl ether and acetone. Isopropyl ether very readily forms hazardous peroxides and hydroperoxides, much more so than other ethers. However, this tendency can be controlled with commercial antioxidant additives. Therefore, it is also being promoted as another possible ether to be used in gasoline (33). 

Bromo-2,4-dinitrobenzene [584-48-5] M 247.0, m 75 . Crystd from ethyl ether, isopropyl ether, 80% EtOH or absolute EtOH. 

Separated from retinol by column chromatography on water-deactivated alumina with hexane containing a very small percentage of acetone. Also chromatographed on TLC silica gel G, using pet ether/isopropyl ether/acetic acid/water (180 20 2 5) or pet ether/acetonitrile/acetic acid/water (190 10 1 15) to develop the chromatogram. Then recrystd from propylene at low temperature. 

Dissolved in MeOH or acetone, and crystd by adding distd water. Dried in vacuum at 70°. It has also been successively recrystd from isopropyl ether, isopropyl ether/acetone (50 1) and isopropyl ether/EtOH (50 1) for lOh, then isopropyl ether/acetone for Ih, and dried at 65° under reduced pressure for 1 week. [Kondo et al. J Chem Soc, Faraday Trans 1 76 812 1980.]... 

SO as to end the air mixture to adsorber No. 2. The system is then fully automatic. Solvents which have been successfully recovered by the activated carbon adsorption method include methanol, ethanol, butanol, chlorinated hydrocarbons including perchlorethylene, which boils at 121 C (250 °F), ethyl ether, isopropyl ether, the acetates up to amyl acetate, benzene, toluene, xylene, mineral spirits, naphtha, gasoline, acetone, methyl ethyl ketone, hexane, carbon disulfide, and others. 

ThermodynaMc Smdy of Complex Formation by Hydrogen Bonding in Halo-genoalkane-Oxygenated Solvent Mixtures—Halothane With Propyl Ether, Isopropyl Ether, 1,4-Dioxane, and 2,5-Dioxahexane (Dohnal et al., 1996)... 

Isoamyl acetete Isoamyl alcohol Isobutyl acetate Isobutyl alcohol Isophorone Isopropyl acetate Isopropyl alcohol Isopropyl glycidyl ether Isopropyl ether... 

Toluene 2,4-Diisocyanate (TDI) Diisodecyl Phdialate Diisopropanolamine Isopropyl Ether Isopropyl Ether Isopropyl Percarbonate Isopropyl Percarbonate Diisobutyl Ketone Diisopropylamine Diisopropylbenzene Hydroperoxide... 

EtOH, MeOH, ether, isopropyl ether, petroleum ether... 

L-Lactic acid [79-33-4] M 90.1, m 52.8 , b 105°/0.1mm, (aJo +3.82° (H2O). Purified by fractional distn at 0.1mm pressure, followed by fractional crystn from ethyl ether/isopropyl ether (1 1, dried with sodium). [Borsook, Huffman and Liu JBC 102 449 1933]. The solvent mixture, benzene/ethyl ether (1 1) containing 5% pet ether (b 60-80°) has also been used. 

Ethers Diethyl ether, isopropyl ether Irritant, nausea ... 

SAFETY PROFILE The simpler ethers such as ethyl ether, isopropyl ether, etc., are powerful narcotics that in large doses can cause death. The danger from ethers is usually acute and seldom chronic. Aftereffects to ether intoxication are uncommon although continued exposure to small concentrations (not enough to cause an overt symptom) has been known to cause loss of appetite, excessive thirst, and fatigue. 

Chemical Name diisopropyl ether, isopropyl ether, 2-isopropoxypropane, 2,2-oxybispropane, 3-oxa-2,4-dimethyl-pentane... 

DIMETHYL-BUTANE PROPYL-ETHER ISOPROPYL-ETHER... 

AI3-24270 Bis(isopropyl) ether Diisoptopyl ether Diisopropyl oxide EINECS 203-560-6 Ether, isopropyl Ether isopropylique HSDB 624 Isopropyl ether Izopropylowy eter Propane, l2 -oxybis- UN1159. Liquid mp = -86.8° bp = 68.5° d = 0.7241 slightly soluble in H2O, soluble in MezCO, CCI4, freely soluble in EtOH, Et20. 

Cellulose ethere BenzylceUuiose CarboxjrmethylceUulose Ethylc ulose Ethylene glycol ethers Carbitol Cellosolve Ethyl ether Isopropyl ether... 

Alcohols. Methanol and ethanol have long been important alkylating agents, especially for nitrogen bonding. In practically every case, a catalyst is necessary to cause the alkylation to proceed smoothlyvand in many instances, this is a mineral acid. Alcohols are used in the manufacture of ethers, such as ordinary ethyl ether, isopropyl ether, Carbitol, Cellosolve, and naphthyl methyl ether. It should be noted that, although naphthols react with alcohol in the presence of a mineral acid, the aryl alkyl ethers cannot be formed by this reaction in the case of phenols. 

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