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トリメチルアミン (約25%メタノール溶液, 約3.2mol/L) 製品概要
化学名:トリメチルアミン (約25%メタノール溶液, 約3.2mol/L)
别名:TriMethylaMine, 2.0 M solution in ethanol, SpcSeal;TriMethylaMine, 2.0 M solution in THF, SpcSeal;TriMethylaMine, 30% solution in ethanol, SpcSeal;TriMethylaMine, 30% solution in Methanol, SpcSeal;Trimethylamine (~25 wt. % solution in methanol);Trimethylamine anhydrous, >=99%;trimethylamine 2M in THF;Trimethylamine >=99.5%
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Mol File:75-50-3.mol
トリメチルアミン (約25%メタノール溶液, 約3.2mol/L)
トリメチルアミン (約25%メタノール溶液, 約3.2mol/L) 物理性質
融点 283-284 °C (dec.)(lit.)
沸点 3-4 °C(lit.)
比重(密度) 0.83-0.88 g/mL at 20 °C
蒸気密度2.09 (vs air)
蒸気圧430 mm Hg ( 25 °C)
屈折率 n20/D 1.357
闪点 38 °F
貯蔵温度 2-8°C
外見 Liquid
酸解離定数(Pka)pKb (25°): 4.13
爆発限界(explosive limit)11.6%
水溶解度 Soluble In Water, 8.9e+005 mg/L.
凝固点 -117.1℃
Sensitive Hygroscopic
Merck 14,9710
BRN 956566
安定性:Stable. Incompatible with a wide variety of materials, including bases, acids, oxidizing agents, brass, zinc, magnesium, aluminium, mercury, mercury oxides, acid chlorides, acid anhydrides. Hygroscopic. Highly flammable. Readily forms explosive mixtures with air.
CAS データベース75-50-3(CAS DataBase Reference)
主な危険性 Xi,C,F+,Xn,F
Rフレーズ 36/37/38-34-20/22-12-41-37/38-20-11
Sフレーズ 26-36-45-36/37/39-16-29-39-3
RIDADR UN 2924 3/PG 2
WGK Germany 1
RTECS 番号YH2700000
国連危険物分類 3
容器等級 II
MSDS Information
SigmaAldrich English
ACROS English
ALFA English
トリメチルアミン (約25%メタノール溶液, 約3.2mol/L) Usage And Synthesis
化学的特性Colorless gas at room temperature; fishy ammoniacal odor; readily liquefied. Anhydrous form shipped as liquefied compressed gas. Soluble in water, alcohol, and ether.
使用Organic synthesis, especially of choline salts, warning agent for natural gas, manufacture of disinfectants, flotation agent, insect attractant, quaternary ammonium compounds, plastics.
定義ChEBI: A tertiary amine that is ammonia in which each hydrogen atom is substituted by an methyl group.
一般的な説明A colorless gas with a fishlike odor at low concentrations changing to ammonia-like odor at higher concentrations. Shipped as a liquid under its own vapor pressure. Contact with the unconfined liquid can cause frostbite from evaporative cooling or chemical type burns. The gasis corrosive and dissolves in water to form flammable, corrosive solutions. Gas is an asphyxiate by the displacement of air. Produces toxic oxides of nitrogen during combustion. Prolonged exposure to heat can cause the containers to rupture violently and rocket. Long-term inhalation of low concentrations or short -term inhalation of high concentrations has adverse health effects.
空気と水の反応Highly flammable and easily ignited. Water soluble.
反応プロフィールTRIMETHYLAMINE neutralizes acids in exothermic reactions to form salts plus water. May be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen may be generated in combination with strong reducing agents, such as hydrides. Contamination of an ethylene oxide tank with trimethylamine caused an explosion [BCISC Quart. Safety Summ., 1966, 37, 44].
健康ハザードVAPOR: POISONOUS IF INHALED. Irritating to eyes, nose, and throat. LIQUID: Will burn skin and eyes. Harmful if swallowed.
火災危険FLAMMABLE. Flashback along vapor trail may occur. Vapor may explode if ignited in an enclosed area. Vapor is heavier than air and may travel a considerable distance to a source of ignition and flash back.
純化方法Dry triethylamine by passing the gas through a tower filled with solid KOH. Water and impurities containing labile hydrogen were removed by treatment with freshly sublimed, ground, P2O5. It has been refluxed with acetic anhydride, and then distilled through a tube packed with HgO and BaO. [Comyns J Chem Soc 1557 1955.] For more extensive purification, trimethylamine is converted to the hydrochloride, crystallised (see below), and regenerated by treating the hydrochloride with excess aqueous 50% KOH, the gas is passed through a CaSO4 column into a steel cylinder containing sodium ribbon. After 1-2 days, the cylinder is cooled to -78o and hydrogen and air are removed by pumping. [Day & Felsing J Am Chem Soc 72 1698 1950.] Me3N has been distlled from trap-to-trap and degassed by freeze-pump-thaw [Halpern et al. J Am Chem Soc 108 3907 1986]. It is commercially supplied in a pressure tin. [Beilstein 4 H 43, 4 I 322, 4 II 553, 4 III 99, 4 IV 134.]