Isobutylacetat

Bezeichnung:Isobutylacetat

CAS-Nr110-19-0

Englisch Name:Isobutyl acetate

CBNumberCB8852805

SummenformelC6H12O2

Molgewicht116.16

MOL-Datei110-19-0.mol

Synonyma

Isobutylacetat

2-Methylpropylacetat

2-Methyl-1-propylacetat

Isobutylacetat physikalisch-chemischer Eigenschaften

Schmelzpunkt	-99 °C (lit.)
Siedepunkt	115-117 °C (lit.)
Dichte	0.867 g/mL at 25 °C (lit.)
Dampfdichte	>4 (vs air)
Dampfdruck	15 mm Hg ( 20 °C)
FEMA	2175 \| ISOBUTYL ACETATE
Brechungsindex	n20/D 1.39(lit.)
Flammpunkt	71 °F
storage temp.	Store below +30°C.
Löslichkeit	water: soluble5.6g/L at 20°C
Aggregatzustand	Liquid
Farbe	Clear
PH	5 (4g/l, H2O, 20℃)
Säure-Base-Indikators(pH-Indikatoren)	7
Geruch (Odor)	Agreeable fruity odor in low concentrations, disagreeable in higher concentrations; mild, characteristic ester; nonresidual.
Odor Threshold	0.008ppm
Explosionsgrenze	2.4-10.5%(V)
Geruchsart	fruity
Wasserlöslichkeit	7 g/L (20 ºC)
Merck	14,5130
JECFA Number	137
BRN	1741909
Henry's Law Constant	(x 10^-4 atm?m³/mol): 4.85 at 25 °C (approximate - calculated from water solubility and vapor pressure)
Expositionsgrenzwerte	TLV-TWA 150 ppm (～700 mg/m³) (ACGIH, MSHA, and OSHA); IDLH 7500 ppm (NIOSH).
Dielectric constant	5.6（20℃）
LogP	2.3 at 25℃
CAS Datenbank	110-19-0(CAS DataBase Reference)
NIST chemische Informationen	Isobutyl acetate(110-19-0)
EPA chemische Informationen	Isobutyl acetate (110-19-0)

Sicherheit

Kennzeichnung gefährlicher	F
R-Sätze:	11-66
S-Sätze:	16-23-25-29-33
RIDADR	UN 1213 3/PG 2
OEB	A
OEL	TWA: 150 ppm (700 mg/m3)
WGK Germany	1
RTECS-Nr.	AI4025000
Selbstentzündungstemperatur	793 °F
TSCA	Yes
HS Code	2915 39 00
HazardClass	3
PackingGroup	II
Giftige Stoffe Daten	110-19-0(Hazardous Substances Data)
Toxizität	LD50 orally in Rabbit: 13400 mg/kg LD50 dermal Rabbit > 17400 mg/kg
IDLA	1,300 ppm [10% LEL]

Gefahreninformationscode (GHS)

Isobutyl acetate Chemische Eigenschaften,Einsatz,Produktion Methoden

ERSCHEINUNGSBILD
FARBLOSE FLüSSIGKEIT MIT CHARAKTERISTISCHEM GERUCH.
PHYSIKALISCHE GEFAHREN
Die Dämpfe mischen sich leicht mit Luft. Bildung explosionsfähiger Gemische.
CHEMISCHE GEFAHREN
Reagiert mit starken Oxidationsmitteln, starken Säuren und starken Basen unter Feuer- und Explosionsgefahr.
ARBEITSPLATZGRENZWERTE
TLV: 150 ppm (als TWA); (ACGIH 2005).
MAK: 100 ppm, 480 mg/m? Spitzenbegrenzung: überschreitungsfaktor I(2); Schwangerschaft: Gruppe C; (DFG 2005).
AUFNAHMEWEGE
Aufnahme in den Körper durch Inhalation der Dämpfe.
INHALATIONSGEFAHREN
Beim Verdampfen bei 20°C tritt langsam eine gesundheitsschädliche Kontamination der Luft ein.
WIRKUNGEN BEI KURZZEITEXPOSITION
WIRKUNGEN BEI KURZZEITEXPOSITION:
Der Dampf reizt leicht die Augen und die Atemwege. Möglich sind Auswirkungen auf das Zentralnervensystem. Exposition weit oberhalb der Arbeitsplatzgrenzwerte kann Bewusstseinstrübung verursachen.
WIRKUNGEN NACH WIEDERHOLTER ODER LANGZEITEXPOSITION
Die Flüssigkeit entfettet die Haut.
LECKAGE
Belüftung. Zündquellen entfernen. Ausgelaufene Flüssigkeit möglichst in abdichtbaren Behältern sammeln. Reste mit Sand oder inertem Absorptionsmittel aufnehmen und an einen sicheren Ort bringen. NICHT in die Kanalisation spülen. Persönliche Schutzausrüstung: Atemschutzfilter für organische Gase und Dämpfe.
R-Sätze Betriebsanweisung:
R11:Leichtentzündlich.
R66:Wiederholter Kontakt kann zu spröder oder rissiger Haut führen.
S-Sätze Betriebsanweisung:
S16:Von Zündquellen fernhalten - Nicht rauchen.
S23:Gas/Rauch/Dampf/Aerosol nicht einatmen(geeignete Bezeichnung(en) vom Hersteller anzugeben).
S25:Berührung mit den Augen vermeiden.
S29:Nicht in die Kanalisation gelangen lassen.
S33:Maßnahmen gegen elektrostatische Aufladungen treffen.
Beschreibung
Isobutyl acetate has a fruity (currant-pear), floral (hyacinth-rose) odor and a characteristic ether-like, slightly bitter flavor. May be prepared by direct esterification of isobutyl alcohol with acetic acid.
Chemische Eigenschaften
Isobutyl acetate is a colorless liquid with a fruit flavor. Isobutyl acetate is moisture sensitive, incompatible with ignition sources, moisture, excess heat, strong oxidizing agents, and strong bases; on decomposition, it releases carbon monoxide and carbon dioxide. It is used for nitrification fiber and paint solvents, chemical reagents, and modulation spices
Chemische Eigenschaften
Isobutyl acetate, also known as 2-methylpropyl ethanoate (IUPAC name) or β-methylpropyl acetate, is a common solvent. It is produced from the esterifi cation of isobutanol with acetic acid. It is used as a solvent for lacquer and nitrocellulose. Like many esters, it has a fruity or fl oral smell at low concentrations and occurs naturally in raspberries, pears, and other plants. At higher concentrations, the odor can be unpleasant and may cause symptoms of CNS depression, such as nausea, dizziness, and headache
Chemische Eigenschaften
Butyl acetates are colorless or yellowish liquids with pleasant, fruity odors. There are 4 isomers.
Physikalische Eigenschaften
Colorless liquid with a fruity odor. Experimentally determined detection and recognition odor threshold concentrations were 1.7 mg/m³ (360 ppb_v) and 2.4 mg/m³ (510 ppb_v), respectively (Hellman and Small, 1974).
Occurrence
Reported found in, apple, apricot, banana, currants, guava, grapes, melon, pear, blackcurrant, papaya, pineapple, strawberry, vinegar, wheat bread, Parmesan and Gruyere cheese, beef fat, beer, cognac, rum, cider, whiskies, sherry, grape wines, port, olive, cocoa, passion fruit, plum, starfruit, bantu beer, plum and grape brandy, mango, tamarind, apple brandy, figs, plum wine, litchi, sake, nectarine, naranjilla fruit, Cape gooseberry and Roman chamomile oil.
Verwenden
Isobutyl Acetate is a flavoring agent that is a clear colorless liquid with a fruity odor resembling banana when diluted. it is soluble in alcohol, propylene glycol, most fixed oils, and mineral oil, and slightly soluble in water. it is obtained by synthesis.
Verwenden
Isobutyl acetate is used as a solvent and as aflavoring agent.
Verwenden
Solvent; flavoring
Vorbereitung Methode
Isobutyl acetate may be made from methyl isobutyl ketone. It may also be made by treating isobutanol with acetic acid in the presence of catalysts. The Tischenko reaction of acetaldehyde with isobutyraldehyde yields a mixture of isobutyl acetate with ethyl acetate and isobutyl isobutyrate.
Definition
ChEBI: The acetate ester of isobutanol.
synthetische
By direct esterification of isobutyl alcohol with acetic acid.
Aroma threshold values
Detection: 65 to 880 ppb
Taste threshold values
Taste characteristics at 30 ppm: sweet fruity with a banana tutti-frutti note.
Allgemeine Beschreibung
A clear colorless liquid with a fruity odor. Flash point 64°F. Less dense than water (6.2 lb / gal) and insoluble in water. Vapors are heavier than air .
Air & Water Reaktionen
Highly flammable. Insoluble in water.
Reaktivität anzeigen
Isobutyl acetate reacts exothermically with acids to give alcohols and other acids. May react sufficiently exothermically with strong oxidizing acids to ignite the reaction products. Reactions with bases also generate heat. Combination with strong reducing agents (alkali metals and hydrides) generates flammable hydrogen.
Hazard
Flammable, dangerous fire risk.
Health Hazard
Vapors may irritate upper respiratory tract and cause nausea, vomiting, dizziness and loss of consciousness. Liquid irritates eyes and may irritate skin.
Health Hazard
Isobutyl acetate is more toxic but less of anirritant than n-butyl acetate. The toxic symp toms include headache, drowsiness, irritationof upper respiratory tract, and anesthesia.A 4-hour exposure to 8000 ppm was lethalto rats. It produced mild to moderate irri tation on rabbits’ skin. The irritation ineyes was also mild to moderate. The LD50oral value in rabbit is within the range4800 mg/kg.
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.
Flammability and Explosibility
Not classified
Chemische Reaktivität
Reactivity with Water No reaction; Reactivity with Common Materials: Softens and dissolves many types of plastics; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not pertinent; Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.
Biochem/physiol Actions
Taste at 10 ppm
mögliche Exposition
n-Butyl acetate is an important solvent in the production of lacquers, leather and airplane dopes, and perfumes. It is used as a solvent and gasoline additive. sec-Butyl acetate is used as a widely used solvent for nitrocellulose, nail enamels and many different purposes. tert-Butyl acetate is common industrial solvent used in the making of lacquers, artificial leather, airplane dope, perfume; and as a food additive. Isobutyl acetate is used as a solvent and in perfumes and artificial flavoring materials
Source
A product of whiskey fermentation (quoted, Verschueren, 1983). Isobutyl acetate was identified as a volatile constituent released by fresh coffee beans (Coffea canephora variety Robusta) at different stages of ripeness (Mathieu et al., 1998).
Environmental Fate
Chemical/Physical. Slowly hydrolyzes in water forming 2-methylpropanol and acetic acid.
At an influent concentration of 1,000 mg/L, treatment with GAC resulted in an effluent concentration of 180 mg/L. The adsorbability of the carbon used was 164 mg/g carbon (Guisti et al., 1974).
Versand/Shipping
UN1123 Butyl acetates, Hazard Class: 3; Labels: 3—Flammable liquid.
Inkompatibilitäten
All butyl acetates are incompatible with nitrates, strong oxidizers; strong alkalies; strong acids. Butyl acetates may form explosive mixture with air; reacts with water, on standing, to form acetic acid and n-butyl alcohol. Violent reaction with strong oxidizers and potassium-tert-butoxide. Dissolves rubber, many plastics, resins and some coatings. May accumulate static electrical charges, and may cause ignition of its vapors
Waste disposal
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.

Isobutyl acetate Upstream-Materialien And Downstream Produkte

Isobutylacetat Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

110-19-0, Isobutyl acetate Verwandte Suche:

Send Inquriy