Ethylacetoacetat Produkt Beschreibung

Ethyl acetoacetate Struktur
141-97-9
  • CAS-Nr.141-97-9
  • Bezeichnung:Ethylacetoacetat
  • Englisch Name:Ethyl acetoacetate
  • Synonyma:Ethylacetoacetat;Acetessigs?ureethylester;Ethyl(acetylacetat);3-Oxobutans?ureethylester;1-Ethoxybutan-1,3-dion;Acetessigester
    ACE;EAA;EAA en;FEMA 2415;diaceticester;DIACETIC ETHER;Ethylacetacetat;ACETOACETIC ESTER;ACETOACETIC ETHER;AKOS BBS-00004335
  • CBNumber:CB0301721
  • Summenformel:C6H10O3
  • Molgewicht:130.14
  • MOL-Datei:141-97-9.mol
Ethylacetoacetat physikalisch-chemischer Eigenschaften
  • Schmelzpunkt: :−43 °C(lit.)
  • Siedepunkt: :181 °C(lit.)
  • Dichte :1.029 g/mL at 20 °C(lit.)
  • Dampfdichte :4.48 (vs air)
  • Dampfdruck :1 mm Hg ( 28.5 °C)
  • Brechungsindex :n20/D 1.419
  • FEMA  :2415 | ETHYL ACETOACETATE
  • Flammpunkt: :185 °F
  • storage temp.  :Store below +30°C.
  • Löslichkeit :116 g/L (20°C)
  • pka :11(at 25℃)
  • Aggregatzustand :Liquid
  • Farbe :APHA: ≤15
  • Wichte :1.027~1.035 (20/4℃)
  • Geruch (Odor) :Agreeable, fruity.
  • PH :4.0 (110g/l, H2O, 20℃)
  • Relative polarity :0.577
  • Explosionsgrenze :1.0-54%(V)
  • Wasserlöslichkeit :116 g/L (20 ºC)
  • JECFA Number :595
  • Merck  :14,3758
  • BRN  :385838
  • Stabilität: :Stable. Incompatible with acids, bases, oxidizing agents, reducing agents, alkali metals. Combustible.
  • InChIKey :XYIBRDXRRQCHLP-UHFFFAOYSA-N
  • CAS Datenbank :141-97-9(CAS DataBase Reference)
  • NIST chemische Informationen :Butanoic acid, 3-oxo-, ethyl ester(141-97-9)
  • EPA chemische Informationen :Butanoic acid, 3-oxo-, ethyl ester(141-97-9)
Sicherheit
  • Kennzeichnung gefährlicher :Xi
  • R-Sätze: :36
  • S-Sätze: :26-24/25
  • RIDADR  :UN 1993
  • WGK Germany  :1
  • RTECS-Nr. :AK5250000
  • Selbstentzündungstemperatur :580 °F
  • TSCA  :Yes
  • HazardClass  :3.2
  • PackingGroup  :III
  • HS Code  :29183000
  • Giftige Stoffe Daten :141-97-9(Hazardous Substances Data)
  • Toxizität :LD50 orally in rats: 3.98 g/kg (Smyth)

Ethyl acetoacetate Chemische Eigenschaften,Einsatz,Produktion Methoden

  • ERSCHEINUNGSBILD FARBLOSE FLüSSIGKEIT MIT CHARAKTERISTISCHEM GERUCH.
  • PHYSIKALISCHE GEFAHREN Die Dämpfe sind schwerer als Luft.
  • CHEMISCHE GEFAHREN Reagiert mit starken Oxidationsmitteln.
  • ARBEITSPLATZGRENZWERTE TLV nicht festgelegt.
    MAK: IIb (MAK nicht festgelegt, aber Informationen vorhanden). (DFG 2008).
  • AUFNAHMEWEGE Aufnahme in den Körper durch Inhalation.
  • INHALATIONSGEFAHREN Beim Verdampfen bei 20°C tritt eine gesundheitsschädliche Kontamination der Luft nicht oder nur sehr langsam ein , viel schneller jedoch beim Versprühen oder Dispergieren..
  • WIRKUNGEN BEI KURZZEITEXPOSITION WIRKUNGEN BEI KURZZEITEXPOSITION:
    Die Substanz reizt die Augen, die Haut und die Atemwege.
  • LECKAGE Ausgelaufene Flüssigkeit möglichst in abdichtbaren Behältern sammeln. Reste mit Sand oder inertem Absorptionsmittel aufnehmen und an einen sicheren Ort bringen. Reste mit viel Wasser wegspülen.
  • R-Sätze Betriebsanweisung: R36:Reizt die Augen.
  • S-Sätze Betriebsanweisung: S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
    S24/25:Berührung mit den Augen und der Haut vermeiden.
  • Beschreibung The organic compound ethyl acetoacetate (EAA) is the ethyl ester of acetoacetic acid. It is mainly used as a chemical intermediate in the production of a wide variety of compounds, such as amino acids, analgesics, antibiotics, antimalarial agents, antipyrine and amino pyrine, and vitamin B1; as well as the manufacture of dyes, inks, lacquers, perfumes, plastics, and yellow paint pigments. Alone, it is used as a flavoring for food.
  • Chemische Eigenschaften Ethyl 3-Oxobutanoate is a colorless liquid with a fruity, ethereal, sweet odor reminiscent of green apples. It is used to create fresh, fruity top notes in feminine fine fragrances. Ethyl acetoacetate occurs in flavors of natural materials such as coffee, strawberries, and yellow passion fruits.
  • Chemische Eigenschaften Ethyl acetoacetate has a characteristic ether-like, fruity, pleasant, refreshing odor.
  • Chemische Eigenschaften Colourless, clear liquid
  • Occurrence Naturally occurring in strawberry, coffee, sherry, passion fruit juice (yellow), babaco fruit (Carica pentagona Heilborn) and bread.
  • Verwenden Ethyl acetoacetate (EAA) is used as starting material for the syntheses of alpha-substituted acetoacetic esters and cyclic compounds, e.g. pyrazole, pyrimidine and coumarin derivatives as well as intermediate for vitamins and pharmaceuticals. Product Data Sheet
  • synthetische Ethyl acetoacetate is produced industrially by treatment of diketene with ethanol.
    The preparation of ethyl acetoacetate is a classic laboratory procedure . It is prepared via the Claisen condensation of ethyl acetate. Two moles of ethyl acetate condense to form one mole each of ethyl acetoacetate and ethanol.
  • Definition This compound is a tautomer at room temperature consisting of about 93% keto form and 7% enol form.
  • Aroma threshold values Detection: 520 ppb. Aroma characteristics at 10%: sweet fruity apple, fermented, slightly fusel-like and rummy, fruity banana with tropical nuances.
  • Taste threshold values Taste characteristics at 100 ppm: fruity banana, apple and white grape with slightly green estry and tropical nuances.Taste characteristics at 300 ppm: estery, fatty, fruity and tutti-frutti
  • Allgemeine Beschreibung A colorless liquid with a fruity odor. Flash point 185°F. Boiling point 365°F. May cause adverse health effects if ingested or inhaled. May irritate to skin, eyes and mucous membranes. Used in organic synthesis and in lacquers and paints.
  • Air & Water Reaktionen Flammable.
  • Reaktivität anzeigen Ethyl acetoacetate, a beta-keto ester, is more reactive than many esters. Undergoes an exothermic cleavage reaction in the presence of concentrated base. Reacts with acids to liberate heat along with alcohols and acids. Strong oxidizing acids may cause a vigorous reaction that is sufficiently exothermic to ignite the reaction products. Flammable hydrogen is generated by mixing esters with alkali metals and hydrides. Mixing with 2,2,2-tris(bromomethyl)ethanol and zinc led to an explosion [US Patent 3 578 619, Crotonaldehyde may rapidly polymerize with Ethyl acetoacetate (Soriano, D.S. et al. 1988. Journal of Chemical Education 65:637.).1971].
  • Hazard Toxic by ingestion and inhalation; irritant to skin and eyes.
  • Health Hazard Liquid may cause mild irritation of eyes.
  • Brandgefahr Flash Point (°F): 176 ℃; 135 ℃; Flammable Limits in Air (%): 1.4-9.5; Fire Extinguishing Agents: Dry chemical, alcohol foam, carbon dioxide; Fire Extinguishing Agents Not To Be Used: Water may be ineffective; Special Hazards of Combustion Products: Not pertinent; Behavior in Fire: Not pertinent; Ignition Temperature (°F): 563; Electrical Hazard: Data not available; Burning Rate: 2.4 mm/min.
  • Chemische Reaktivität Reactivity with Water No reaction; 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.
  • Chemische Reaktivität Ethyl acetoacetate is subject to Keto - enol tautomerism. Ethyl acetoacetate is often used in the acetoacetic ester synthesis similar to diethyl malonate in the malonic ester synthesis or the Knoevenagel condensation. The protons alpha to carbonyl groups are acidic, and the resulting carbanion can undergo nucleophilic substitution. A subsequent thermal decarboxylation is also possible.Similar to the behavior of acetylacetone, the enolate of ethyl acetoacetate can also serve as a bidentate ligand. For example, it forms purple coordination complexes with iron (III) salts :
    Ethyl acetoacetate can also be reduced to ethyl 3-hydroxy butyrate.
  • Sicherheitsprofil eye irritant. Combustible liquid when exposed to heat or flame; can react with oxidzing materials. Explosive reaction when heated with Zn + tribromoneopentyl alcohol or 2,2,2 tris(bromomethy1)ethanol. To fight fire, use alcohol foam, CO2, dry chemical. When heated to decomposition it emits acrid smoke and irritating fumes. See also ESTERS.
  • Chemical Synthesis Ethyl acetoacetate is a mixture of two tautomer forms: the enolic and the ketonic; the liquid ester at equilibrium contains approximately 70% of the enolic form. It is prepared by Claisen condensation of ethyl acetate in the presence of sodium ethylate; also by reacting diketene with ethanol in the presence of sulfuric acid or triethylamine and sodium acetate, with or without solvent.
  • läuterung methode Shake the ester with small amounts of saturated aqueous NaHCO3 (until no further effervescence), then with water. Dry it with MgSO4 or CaCl2 and distil it under reduced pressure. [Beilstein 3 IV 1528.]
Ethyl acetoacetate Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
Ethylacetoacetat Anbieter Lieferant Produzent Hersteller Vertrieb Händler.
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141-97-9, Ethyl acetoacetate Verwandte Suche:
  • Natural ethyl acetoacetate
  • 3-OXOBUTANOIC ACID ETHYL ESTER
  • 3-OXOBUTYRIC ACID ETHYL ESTER
  • 3-KETOBUTANOIC ACID ETHYL ESTER
  • ACETOACETIC ESTER
  • ACETOACETIC ESTER (ETHYL)
  • ACETOACETIC ETHER
  • ACETOACETIC ACID ETHYL ESTER
  • ACE
  • AKOS BBS-00004335
  • 1-ethoxybutane-1,3-dione
  • 3-oxo-butanoicaciethylester
  • acetoacetated’ethyle
  • Acetoctan ethylnaty
  • acetoctanethylnaty
  • Active acetylacetate
  • Ethyl Acetoacetate Acetoacetic ester Ethyl acetyl acetate
  • Ethyl acetoacetate(EAA)
  • ETHYL ACETOACETATE R. G.
  • ETHYL ACETOACETATE STANDARD FOR GC
  • ETHYL ACETOACETATE 99+% NATURAL
  • THYL ACETOACETATE, WACKER QUALITY
  • ETHYL ACETOACETATE, 99+%
  • ETHYL ACETOACETATE 99+% FCC
  • Ethyl Acetoacetate FCC
  • EthylAcetoacetate,Certified
  • EthylAcetoacetateC6H10O3
  • EthylAcetoAcetateForSynthesis
  • Ethyl acetocetate
  • 3-Ketobutyric acid, ethyl ester
  • Ethyl acetoacetate, extra pure, 99+%
  • Ethyl acetoacetate, pure, 99%
  • ETHYLACETOACETATE,REAGENT
  • ETHYL ACETOACETATE(NATURAL)
  • Acetessigsureethylester
  • ETHYLACETOACETAT (ACETESSIGESTER)
  • 1-ethoxybutane-1,3-dion
  • Ethyl acetoacetate-1-13C
  • Ethyl acetoacetate Lonza quality, >=99.0% (GC)
  • Ethyl acetoacetate ReagentPlus(R), 99%
  • Ethyl acetoacetate Vetec(TM) reagent grade, 98%
  • Ethyl acetoacetate, p.a.
  • Natural acetoacetate
  • FEMA 2415
  • LABOTEST-BB LT01690211
  • EAA
  • ETHYL 3-OXOBUTANATE
  • ETHYL 3-OXOBUTANOATE
  • ETHYL 3-OXOBUTANOIC ACID
  • ETHYL 3-OXOBUTYRATE
  • ETHYL 3-KETOBUTANOATE
  • ethyl beta-ketobutyrate
  • ETHYL ACETOACETATE
  • Ethyl acetyl acetate
  • DIACETIC ETHER
  • activeacetylacetate
  • Butanoicacid,3-oxo-,ethylester
  • diaceticester