Acetoin

Bezeichnung:Acetoin

CAS-Nr513-86-0

Englisch Name:Acetoin

CBNumberCB2492258

SummenformelC4H8O2

Molgewicht88.11

MOL-Datei513-86-0.mol

Synonyma

Acetoin

Acetoin physikalisch-chemischer Eigenschaften

Schmelzpunkt	15 °C (monomer)
Siedepunkt	148 °C(lit.)
Dichte	1.013 g/mL at 25 °C(lit.)
Dampfdruck	86hPa at 20℃
FEMA	2008 \| ACETOIN
Brechungsindex	n20/D 1.417(lit.)
Flammpunkt	123 °F
storage temp.	2-8°C
Löslichkeit	All forms are miscible with water, alcohol, Propylene glycol, Glycerine and common flavor materials. Poorly soluble in hydrocarbons.
Aggregatzustand	Liquid (Monomer) or Powder or Crystals (Dimer)
pka	13.21±0.20(Predicted)
Farbe	Pale yellow to green-yellow or white to yellow
Geruch (Odor)	Intensely creamy-fatty-buttery, penetrating odor, yet milder and less “quinone’’-like than Diacetyl, not as sharp or volatile. Pleasant in extreme dilution.
Geruchsart	buttery
Wasserlöslichkeit	H2O: 0.1g/mL, clear
JECFA Number	405
Merck	14,64
BRN	385636
Stabilität	Hygroscopic
InChIKey	ROWKJAVDOGWPAT-UHFFFAOYSA-N
LogP	0.1 at 25℃
CAS Datenbank	513-86-0(CAS DataBase Reference)
NIST chemische Informationen	2-Butanone, 3-hydroxy-(513-86-0)
EPA chemische Informationen	2-Butanone, 3-hydroxy- (513-86-0)

Sicherheit

Kennzeichnung gefährlicher	Xi,F
R-Sätze:	10-36/38-38-11
S-Sätze:	26-36-36/37
RIDADR	UN 2621 3/PG 3
WGK Germany	1
RTECS-Nr.	EL8790000
TSCA	Yes
HazardClass	3
PackingGroup	III
HS Code	29144090
Giftige Stoffe Daten	513-86-0(Hazardous Substances Data)
Toxizität	skn-rbt 500 mg/24H MOD CNREA8 33,3069,73

Gefahreninformationscode (GHS)

Acetoin Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R10:Entzündlich.
R36/38:Reizt die Augen und die Haut.
R38:Reizt die Haut.
S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
S36/37:Bei der Arbeit geeignete Schutzhandschuhe und Schutzkleidung tragen.
Chemische Eigenschaften
Acetoin is a yellowish liquid with a bland, woody, yogurt odor and a fatty creamy “tub” butter taste. It is useful as a flavor ingredient in butter, milk, yogurt or strawberry flavors.
Chemische Eigenschaften
clear yellow solution
Occurrence
Reported found in fresh apple, butter, cheddar cheese, coffee, cocoa, honey, wheat bread and wine
Verwenden
3-Hydroxy-2-butanone is a chemical used in food flavoring and fragrances. It acts as an intermediate of butanediol cycle in microorganisms. It is used as an aroma carrier in the preparation of flavors and essences.
Verwenden
Used as pharmaceutical intermediates, food spices; mainly for the preparation of cream, dairy, yogurt and strawberry spices.
Verwenden
Acetoin is a produced via fermentation of wines, dairy products and sugars by fermentive bacteria. Acetoin is used in food flavoring and fragrances and is also found in some fruits and vegetables.
Definition
ChEBI: A methyl ketone that is butan-2-one substituted by a hydroxy group at position 3.
Aroma threshold values
Aroma characteristics at 1.0%: strong buttery and creamy
Taste threshold values
Taste characteristics at 10 ppm: sweet, creamy, dairy, and butter-like.
Allgemeine Beschreibung
A light-yellow colored liquid. Slightly denser than water. Hence sinks in water. Boiling point 280°F. Flash point between 100 and 141°F. Used to make other chemicals.
Air & Water Reaktionen
Flammable. Slightly soluble in water.
Reaktivität anzeigen
3-Hydroxy-2-butanone is a ketone and alcohol. Ketones are reactive with many acids and bases liberating heat and flammable gases (e.g., H2). The amount of heat may be sufficient to start a fire in the unreacted portion of the ketone. Ketones react with reducing agents such as hydrides, alkali metals, and nitrides to produce flammable gas (H2) and heat. Ketones are incompatible with isocyanates, aldehydes, cyanides, peroxides, and anhydrides. They react violently with aldehydes, HNO3, HNO3 + H2O2, and HClO4. Flammable and/or toxic gases are generated by the combination of alcohols with alkali metals, nitrides, and strong reducing agents. They react with oxoacids and carboxylic acids to form esters plus water. Oxidizing agents convert them to aldehydes or ketones. Alcohols exhibit both weak acid and weak base behavior. They may initiate the polymerization of isocyanates and epoxides.
Health Hazard
Inhalation or contact with material may irritate or burn skin and eyes. Fire may produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control may cause pollution.
Brandgefahr
HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.
Sicherheitsprofil
Experimental reproductive effects. LWdly toxic by subcutaneous route. A moderate skin irritant. Flammable liquid. When heated to decomposition it emits acrid smoke and fumes. See also KETONES
Synthese
From diacetyl by partial reduction with zinc and acid. It is also a product of fermentation. Acetoin is an optically active compound. The d(–)acetyl methyl carbinol is obtained from fermentation and, in mixture with other products, from the catalytic oxidation of 2,3-butanediol. The 1(+)acetyl methyl carbinol is also obtained from fermentation. The optically pure form has not been isolated; the optically inactive form is prepared synthetically
läuterung methode
Wash acetoin with EtOH until colourless, then with diethyl ether or acetone to remove biacetyl. Dry it in air by suction and dry further in a vacuum desiccator. [Beilstein 1 IV 3991.]

Acetoin Upstream-Materialien And Downstream Produkte

Acetoin Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

513-86-0, Acetoin Verwandte Suche:

Send Inquriy