Ethyl ether, flash-point

Tetrahydronaphthalene [119-64-2] (Tetralin) is a water-white Hquid that is insoluble in water, slightly soluble in methyl alcohol, and completely soluble in other monohydric alcohols, ethyl ether, and most other organic solvents. It is a powerhil solvent for oils, resins, waxes, mbber, asphalt, and aromatic hydrocarbons, eg, naphthalene and anthracene. Its high flash point and low vapor pressure make it usehil in the manufacture of paints, lacquers, and varnishes for cleaning printing ink from rollers and type in the manufacture of shoe creams and floor waxes as a solvent in the textile industry and for the removal of naphthalene deposits in gas-distribution systems (25). The commercial product typically has a tetrahydronaphthalene content of >97 wt%, with some decahydronaphthalene and naphthalene as the principal impurities. 

Compounds with low flash points (below room temperature). Examples are acetaldehyde, acetone, acetonitrile, benzene, carbon disulfide, cyclohexane, diethyl ether, ethyl acetate and -hexane. 

The next simplest ether is the ether with the simplest alkane as one of the hydrocarbon backbones and the next alkane, which is methyl ethyl ether. Its molecular formula is CH3OC2H5. It is a colorless gas with the characteristic ether odor. It has a flash point of 31 °F, and an ignition temperature of only 374°F. This property, of course, makes it an extreme fire and explosion hazard. 

N)2C6H3.O.C6H3(N02)2 yel ndls (from ale), mp 194—95° (186°, probably impure) flash point above 360° diff sol in ale or eth easily sol in hot AcOH, ethyl acet, benz or chlf. It can be prepd by nitrating diphenyl ether with cold fuming nitric acid or with mixed nitric-sulfuric acid (Refs 1 2). It was prepd and examined by the Hercules Powder Co, Wilmington, Del and found to be of excellent stability. It can be detonated by No 6 (or stronger) caps, but not by impact or friction (Ref 3)... 

Methyl alcohol (methanol, wood alcohol, CH3OH boiling point 64.7°C, density 0.7866, flash point 110°C) is a colorless, mobile liquid with a mild characteristic odor (and narcotic properties) that is miscible in all proportions with water, ethyl alcohol, or ether. When ignited, methyl alcohol burns in air with a pale blue, transparent flame, producing water and carbon dioxide. The vapor forms an explosive mixture with air. The upper explosive limit is 36.5% and the lower limit is 6.0% by volume in air. 

The principal commercial vinyl ethers are methyl vinyl ether (methoxyethene, boiling point 5.5°C, density 0.7311, flash point -56°C) ethyl vinyl ether (ethoxyethene, boiling point 35.7°C, density 0.7541, flash point -18°C) and butyl vinyl ether (1-ethenyloxybutane, boiling point 93.5°C, density 0.7792, flash point -1°C). Others such as the isopropyl, iso-butyl, hydroxybutyl, decyl, hexadecyl, and octadecyl ethers, as well as the divinyl ethers of butanediol vinyl ethers are miscible with nearly all organic solvents. 

A flammable chemical substance is a solid, liquid, vapor, or gas that ignites easily and burns rapidly in air. Many of the flammable chemicals used in laboratories are flammable liquids and organic solvents. The vapors of these chemical substances form ignitable mixtures with air. Based on the flash points of these chemicals, classifications are made. The flash point of a chemical substance is defined as the lowest temperature at which a fuel-air mixture present above the surface of a liquid will ignite, if an ignition source is present. The common flammable chemical substances include, but are not restricted to, acetone, benzene, cyclohexane, ethanol, ethyl acetate, ethyl ether, gasoline, hexane, isopropyl alcohol, methanol, propanol, tetrahydro-furan and toluene, and xylene. 

ALLYL PHENYL ETHER (1746-13-0) C ipO Combustible liquid (flash point 143°F/62°C). May form peroxides on contact with air. Violent reaction may occur with strong oxidizers, strong acids acetyl peroxide boron trifluoride aluminum hydride (possible explosion). Incompatible with nitrosyl perchlorate, ozone (may form explosive ethyl peroxide, aldehyde and acetic acid). On small fires, use dry chemical powder (such as Purple-K-Powder), foam, or CO2 extinguishers. 

ETHER, ETHYL PHENYL (103-73-1) CgHjoO CgHsOCiHs Combustible polymerizable liquid (flash point 145°F/63°C). Able to form unstable and explosive peroxides strong acids or other initiators may cause exothermic polymerization. Violent reaction with strong acids, strong oxidizers, ammonium persulfate, bromine dioxide, acyl halides, permanganates, peroxides. On small fires, use dry chemical powder (such as Putple-K-Powder), alcohol-resistant foam, or CO2 extinguishers. 

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