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    酢酸メチル [標準物質]

    酢酸メチル [標準物質] 化學構造式
    79-20-9
    CAS番號.
    79-20-9
    化學名:
    酢酸メチル [標準物質]
    別名:
    酢酸メチル [標準物質];酢酸メチル;エタン酸メチル;デボトン;メチルアセタート;テレトン;メチル=アセタート;酢酸メチルエステル;酢酸メチル [GC用標準物質];酢酸メチル標準品;酢酸メチル REAGENTPLUS,99%
    英語化學名:
    Methyl acetate
    英語別名:
    Metile;Devoton;Tereton;CH3COOCH3;FEMA 2676;octanmetylu;Methylacetat;Methylacetaat;METHYL ACETATE;Acetic acid-Me
    CBNumber:
    CB9167443
    化學式:
    C3H6O2
    分子量:
    74.08
    MOL File:
    79-20-9.mol

    酢酸メチル [標準物質] 物理性質

    融點 :
    -98 °C (lit.)
    沸點 :
    57-58 °C (lit.)
    比重(密度) :
    0.934 g/mL at 25 °C
    蒸気密度:
    2.55 (vs air)
    蒸気圧:
    165 mm Hg ( 20 °C)
    屈折率 :
    n20/D 1.361(lit.)
    FEMA :
    2676 | METHYL ACETATE
    閃點 :
    3.2 °F
    貯蔵溫度 :
    no restrictions.
    溶解性:
    250g/l
    外見 :
    Solution
    色:
    Clear colorless to slightly pale yellow
    臭い (Odor):
    Slightly acrid, sweet; fragrant.
    Relative polarity:
    0.253
    臭気閾値(Odor Threshold):
    1.7ppm
    爆発限界(explosive limit):
    3.1-16%(V)
    水溶解度 :
    250 g/L (20 ºC)
    極大吸収波長 (λmax):
    λ: 255 nm Amax: 1.0
    λ: 275 nm Amax: 0.1
    λ: 300 nm Amax: 0.01
    Merck :
    14,6008
    JECFA Number:
    125
    BRN :
    1736662
    Henry's Law Constant:
    0.90 at 20.00 °C, 1.56 at 30.00 °C (headspace-GC, Hovorka et al., 2002)
    暴露限界値:
    TLV-TWA 200 ppm (~610 mg/m3) (ACGIH, MSHA, and OSHA); TLV-STEL 250 ppm (~760 mg/m3) (ACGIH); IDLH 10,000 ppm (NIOSH).
    安定性::
    Stable. Extremely flammable - readily forms explosive mixtures with air. Note low flash point and wide explosion limits. Incompatible with strong oxidizing agents, strong bases, strong acids, nitrates. May be moisture sensitive.
    CAS データベース:
    79-20-9(CAS DataBase Reference)
    NISTの化學物質情報:
    Acetic acid, methyl ester(79-20-9)
    EPAの化學物質情報:
    Methyl acetate (79-20-9)
    安全性情報
    • リスクと安全性に関する聲明
    • 危険有害性情報のコード(GHS)
    主な危険性  F,Xi
    Rフレーズ  11-36-66-67
    Sフレーズ  16-26-29-33
    RIDADR  UN 1231 3/PG 2
    WGK Germany  1
    RTECS 番號 AI9100000
    自然発火溫度 936 °F
    TSCA  Yes
    HSコード  2915 39 00
    國連危険物分類  3
    容器等級  II
    有毒物質データの 79-20-9(Hazardous Substances Data)
    毒性 LD50 orally in Rabbit: > 5000 mg/kg LD50 dermal Rat > 2000 mg/kg
    消防法 危険物第4類第一石油類(非水溶性)
    化審法 (2)-725
    安衛法 有機則 第二種有機溶剤等
    絵表示(GHS)
    注意喚起語 Danger
    危険有害性情報
    コード 危険有害性情報 危険有害性クラス 區分 注意喚起語 シンボル P コード
    H225 引火性の高い液體および蒸気 引火性液體 2 危険 P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501
    H319 強い眼刺激 眼に対する重篤な損傷性/眼刺激 性 2A 警告 P264, P280, P305+P351+P338,P337+P313P
    H336 眠気やめまいのおそれ 特定標的臓器毒性、単回暴露; 麻酔作用 3 警告 P261, P271, P304+P340, P312,P403+P233, P405, P501
    注意書き
    P210 熱/火花/裸火/高溫のもののような著火源から遠ざ けること。-禁煙。
    P261 粉じん/煙/ガス/ミスト/蒸気/スプレーの吸入を避ける こと。
    P280 保護手袋/保護衣/保護眼鏡/保護面を著用するこ と。
    P303+P361+P353 皮膚(または髪)に付著した場合:直ちに汚染された衣 類をすべて脫ぐこと/取り除くこと。皮膚を流水/シャワー で洗うこと。
    P305+P351+P338 眼に入った場合:水で數分間注意深く洗うこと。次にコ ンタクトレンズを著用していて容易に外せる場合は外す こと。その後も洗浄を続けること。
    P337+P313 眼の刺激が続く場合:醫師の診斷/手當てを受けること。
    P370+P378 火災の場合:消火に...を使用すること。
    P403+P235 換気の良い場所で保管すること。涼しいところに 置くこと。
    P405 施錠して保管すること。

    酢酸メチル [標準物質] 価格 もっと(43)

    メーカー 製品番號 製品説明 CAS番號 包裝 価格 更新時間 購入
    富士フイルム和光純薬株式會社(wako) W01CHDASB-00013417 酢酸メチル
    Methyl Acetate
    79-20-9 100mg ¥20200 2018-12-26 購入
    富士フイルム和光純薬株式會社(wako) W01CHDASB-00013417 酢酸メチル
    Methyl Acetate
    79-20-9 1g ¥40300 2018-12-26 購入
    東京化成工業 S0300 酢酸メチル [GC用標準物質] >99.5%(GC)
    Methyl Acetate [Standard Material for GC] >99.5%(GC)
    79-20-9 5mL ¥11300 2021-03-23 購入
    関東化學株式會社(KANTO) 25177-01 酢酸メチル >99.0%(GC)
    Methyl acetate >99.0%(GC)
    79-20-9 500mL ¥1700 2021-03-23 購入
    関東化學株式會社(KANTO) 25177-00 酢酸メチル >99.5%(GC)
    Methyl acetate >99.5%(GC)
    79-20-9 500mL ¥2500 2021-03-23 購入

    酢酸メチル [標準物質] 化學特性,用途語,生産方法

    外観

    無色澄明の液體

    定義

    本品は、酢酸とメタノールのエステルであり、次の化學式で表される。

    溶解性

    エタノール及びジエチルエーテルに極めて溶けやすく、水に溶けやすい。

    解説

    メタノール(メチルアルコール)と酢酸とが脫水縮合して生ずるエステル。無色の揮発しやすい液體で芳香を有している。エタノール(エチルアルコール)、エーテルなどの有機溶媒と任意の割合で混じり合うほか、水にもかなり溶ける。合成樹脂、ペイント、香料などの溶剤としての用途をもつ。[廣田 穰][參照項目] | 酢酸 | メタノール[補完資料] | 酢酸メチル(データノート)
    小學館 日本大百科全書(ニッポニカ) )

    用途

    溶剤(香料、ニトロセルロース、合成樹脂、塗料他)

    用途

    溶剤。

    用途

    環境ホルモン物質であるアルキルフェノール類およびビスフェノールAを分析する際に、抽出溶媒として用いられます。

    用途

    合成反応用溶剤、塗料?印刷インキ用溶剤、マニキュア、ラッカー、香料の溶剤

    化粧品の成分用途

    溶剤、香料

    主な用途

    ソルベントMEは酢酸メチル約80%とメタノール約20%の混合溶剤です。主に塗料用溶剤や洗缶用溶剤として使用されています。

    説明

    Methyl acetate, also known as MeOAc , acetic acid methyl ester or methyl ethanoate, is a carboxylate ester with the formula CH3COOCH3. It is a flammable liquid with a characteristically pleasant smell reminiscent of some glues and nail polish removers. Methyl acetate is occasionally used as a solvent, being weakly polar and lipophilic, but its close relative ethyl acetate is a more common solvent being less toxic and less soluble in water. Methyl acetate has a solubility of 25% in water at room temperature. At elevated temperature its solubility in water is much higher. Methyl acetate is not stable in the presence of strong aqueous bases or aqueous acids. Methyl acetate is VOC exempt.

    化學的特性

    Methyl acetate has a pleasant, fruity odor and slightly bitter flavor. May be prepared by boiling acetic acid and methanol in the presence of acid catalysts; or by heating methanol with an excess carbon monoxide under pressure in the presence of a catalyst (phosphoric acid, cobalt salts).
    Methyl acetate occurs naturally in low concentrations in mint, fungus,grapes, banana, coffee (Furia and Bellanca, 1975) and is a volatile constituent of nectarines (Takeoka et al., 1988). It is also present in some distilled alcoholic beverages (Shimoda et al., 1993). It is produced industrially via the carbonylation of methanol as a byproduct of acetic acid production or by esterification of acetic acid with methanol in the presence of strong acid such as sulfuric acid.

    化學的特性

    Methyl acetate has a pleasant, fruity odor and slightly bitter flavor.

    物理的性質

    Colorless liquid with a pleasant odor. An odor threshold concentration of 48 ppbv was reported by Nagata and Takeuchi (1990). Cometto-Mu?iz and Cain (1991) reported an average nasal pungency threshold concentration of 112,500 ppmv.

    天然物の起源

    Reported found in apple, banana, sweet and sour cherry, tangerine juice, black currants, guava, grapes, melon, peach, pear, pineapple, strawberry, cabbage, tomato, clove bud, peppermint oil, vinegar, bread, cheeses, butter, yogurt, beef, beer, cognac, rum, whiskies, cider, sherry, grape wines, cocoa, coffee, filbert, peanut, honey, soybean, olive, passion fruit, fruit brandies, fig, gin, kiwifruit, clary sage, arrack and nectarine.

    使用

    Methyl acetate is used as a solvent forlacquers, resins, oils, and nitrocellulose; inpaint removers; as a flavoring agent; and inthe manufacture of artificial leather.

    使用

    Solvent for lacquers, oils, and resins

    使用

    Solvent for nitrocellulose, acetylcellulose, and many resins and oils; manufacture of artificial leather.

    製造方法

    Methyl acetate is produced industrially via the carbonylation of methanol as a byproduct of the production of acetic acid.Methyl acetate also arises by esterification of acetic acid with methanol in the presence of strong acids such as sulfuric acid, this production process is famous because of Eastman Kodak's intensified process using a reactive distillation.
    2–1-Reactions
    In the presence of strong bases such as sodium hydroxide or strong acids such as hydrochloric acid or sulfuric acid it is hydrolyzed back into methanol and acetic acid, especially at elevated temperature. The conversion of methyl acetate back into its components, by an acid , is a first-order reaction with respect to the ester. The reaction of methyl acetate and a base, for example sodium hydroxide, is a second-order reaction with respect to both reactants.
    3-Applications
    A major use of methyl acetate is as a volatile low toxicity solvent in glues, paints, and nail polish removers. Acetic anhydride is produced by carbonylation of methyl acetate in a process that was inspired by the Monsanto acetic acid synthesis.

    Aroma threshold values

    Detection: 1.5 to 47 ppm

    Taste threshold values

    Taste characteristics at 60 ppm: green, ethereal, fruity, fresh, rum and whiskey-like.

    一般的な説明

    A clear colorless liquid with a fragrant odor. Moderately toxic. Flash point 14°F. Vapors heavier than air.

    空気と水の反応

    Highly flammable. Water soluble.

    反応プロフィール

    Methyl acetate presents a fire or explosion hazard when exposed to strong oxidizing agents. Emits irritating fumes and acrid smoke when heated to decomposition, [Lewis, 3rd ed., 1993, p. 826]. Methyl acetate reactivity is consistent with other compounds of the ester group.

    危険性

    Flammable, dangerous fire and explosion risk, explosive limits in air 3–16%. Irritant to respiratory tract. Headache, dizziness, nausea, eye damage (degeneration of ganglion cells in the retina).

    健康ハザード

    (Very similar to those of methyl alcohol, which constitutes 20% of commercial grade.) Inhalation causes headache, fatigue, and drowsiness; high concentrations can produce central nervous system depression and optic nerve damage. Liquid irritates eyes and may cause defatting and cracking of skin. Ingestion causes headache, dizziness, drowsiness, fatigue; may cause severe eye damage.

    健康ハザード

    The toxic effects from exposure to methylacetate include inflammation of the eyesvisual and nervous disturbances, tightnessof the chest, drowsiness, and narcosis. Ithydrolyzes in body to methanol, which prob ably produces the atrophy of the optic nerve.A 4-hour exposure to 32,000 ppm was lethalto rats. Oral and dermal toxicities of thiscompound are low. An oral LD50 value inrats is on the order of 5000 mg/kg.

    火災危険

    Behavior in Fire: Vapor is heavier than air and may travel a considerable distance to a source of ignition and flash back.

    化學反応性

    Reactivity with Water Reacts slowly to form acetic acid and methyl alcohol; the reaction is not violent; Reactivity with Common Materials: No reaction; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not pertinent; Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.

    安全性プロファイル

    Moderately toxic by several routes. A human systemic irritant by inhalation. A moderate skin and eye irritant. Mutation data reported. Dangerous fire hazard when exposed to heat, flame, or oxidizers. Moderate explosion hazard when exposed to heat or flame. When heated to decomposition it emits acrid smoke and fumes. See also ESTERS.

    Chemical Synthesis

    By boiling acetic acid and methanol in the presence of acid catalysts, or by heating methanol with an excess of carbon monoxide under pressure in the presence of a catalyst (phosphoric acid, cobalt salts).

    職業ばく露

    Methyl acetate is used as a solvent in lacquers and paint removers; and as an intermediate in pharmaceutical manufacture.

    環境運命予測

    Photolytic. A rate constant of 2.00 x 10-13 cm3/molecule?sec was reported for the reaction of methyl acetate and OH radicals in aqueous solution (Wallington et al., 1988b).
    Chemical/Physical. Slowly hydrolyzes in water yielding methyl alcohol and acetic acid (NIOSH, 1997). The estimated hydrolysis half-life in water at 25 °C and pH 7 is 2.5 yr (Mabey and Mill, 1978).
    At an influent concentration of 1,030 mg/L, treatment with GAC resulted in an effluent concentration of 760 mg/L. The adsorbability of the carbon used was 54 mg/g carbon (Guisti et al., 1974).

    輸送方法

    UN1231 Methyl acetate, Hazard Class: 3; Labels: 3-Flammable liquid.

    純化方法

    Methanol in methyl acetate can be detected by measuring its solubility in water. At 20o, the solubility of methyl acetate in water is ca 35g per 100mL, but 1% MeOH confers complete miscibility. Methanol can be removed by conversion to methyl acetate, by refluxing for 6hours with acetic anhydride (85mL/L), followed by fractional distillation. Acidic impurities can be removed by shaking with anhydrous K2CO3 and distilling. An alternative treatment is with acetyl chloride, followed by washing with concentrated NaCl and drying with CaO or MgSO4. (Solid CaCl2 cannot be used because it forms a crystalline addition compound.) Distillation from copper stearate destroys peroxides. Free alcohol or acid can be eliminated from methyl acetate by shaking with strong aqueous Na2CO3 or K2CO3 (three times), then with aqueous 50% CaCl2 (three times), saturated aqueous NaCl (twice), drying with K2CO3 and distilling it from P2O5. [Beilstein 2 IV 122.]

    不和合性

    Vapor may form explosive mixture with air. A Strong reducing agent. Incompatible water, acids, nitrates, strong oxidizers; alkalis. Attacks some plastics. Attacks many metals in presence of water. Reacts slowly with water, forming acetic acid and methanol. Decomposes in heat; on contact with air, bases, strong oxidizers; UV-light; possible fire and explosion hazard

    廃棄物の処理

    Dissolve or mix the material with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber. All federal, state, and local environmental regulations must be observed.

    酢酸メチル [標準物質] 上流と下流の製品情報

    原材料

    準備製品


    酢酸メチル [標準物質] 生産企業

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    79-20-9(酢酸メチル [標準物質])キーワード:


    • 79-20-9
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    • 酢酸メチル [標準物質]
    • 酢酸メチル
    • エタン酸メチル
    • デボトン
    • メチルアセタート
    • テレトン
    • メチル=アセタート
    • 酢酸メチルエステル
    • 酢酸メチル [GC用標準物質]
    • 酢酸メチル標準品
    • 酢酸メチル REAGENTPLUS,99%
    • 分析化學
    • 脂肪酸メチルエステル (GC用標準物質)
    • GC用標準物質
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