2-Heptanon Chemische Eigenschaften,Einsatz,Produktion Methoden
ERSCHEINUNGSBILD
FARBLOSE FLüSSIGKEIT MIT CHARAKTERISTISCHEM GERUCH.
CHEMISCHE GEFAHREN
Reagiert mit oxidierenden Materialien. Greift einige Kunststoffarten an.
ARBEITSPLATZGRENZWERTE
TLV: 50 ppm (als TWA); (ACGIH 2005).
MAK nicht festgelegt (DFG 2005).
AUFNAHMEWEGE
Aufnahme in den K?rper durch Inhalation der D?mpfe.
INHALATIONSGEFAHREN
Beim Verdampfen bei 20°C tritt langsam eine gesundheitssch?dliche Kontamination der Luft ein.
WIRKUNGEN BEI KURZZEITEXPOSITION
WIRKUNGEN BEI KURZZEITEXPOSITION: Die Substanz reizt die Augen, die Haut und die Atemwege. M?glich 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. Ausgelaufene Flüssigkeit m?glichst in abdichtbaren Metallbeh?ltern sammeln. Reste mit trockenem Sand oder inertem Absorptionsmittel aufnehmen und an einen sicheren Ort bringen. NICHT in die Kanalisation spülen. Pers?nliche Schutzausrüstung: Atemschutzfilter für organische Gase und D?mpfe.
R-S?tze Betriebsanweisung:
R22:Gesundheitssch?dlich beim Verschlucken.
R38:Reizt die Haut.
R40:Verdacht auf krebserzeugende Wirkung.
R48/20/22:Gesundheitssch?dlich: Gefahr ernster Gesundheitssch?den bei l?ngerer Exposition durch Einatmen und durch Verschlucken.
R20/22:Gesundheitssch?dlich beim Einatmen und Verschlucken.
R10:Entzündlich.
S-S?tze Betriebsanweisung:
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
S24/25:Berührung mit den Augen und der Haut vermeiden.
Beschreibung
2-Heptanone has a characteristic banana, slightly spicy odor. It may be prepared by oxidation of methyl n-amyl carbinol; also from n-amyl propionic acid or from ethyl butyl acetat.
Chemische Eigenschaften
2-Heptanone is a clear colorless liquid with a fruity, spicy, cinnamon, banana, slightly spicy odor. The ketone 2-heptanone is a polar molecular compound with dipole-dipole attractions between the molecules.
Physikalische Eigenschaften
Colorless liquid with a banana-like odor. Can be detected at a concentration of 140 μg/kg (Buttery
et al., 1969a). Cometto-Mu?iz et al. (2000) reported nasal pungency threshold concentrations
ranging from approximately 195 to 935 ppm. An odor threshold concentration of 6.8 ppb
v was
reported by Nagata and Takeuchi (1990).
Occurrence
Reported found in clove essential oil, Ceylon cinnamon and rancid coconut oil; also identifed in Ruta Montana Also reported found in banana, lingonberry, loganberry, black currant, guava, grapes, papaya, peach, pear, raspberry, other berries, strawberry jam, asparagus, roasted onion, leek, baked potato, mushroom, clove bud, ginger, blue, cheddar and Swiss cheeses, milk, cream, butter, fsh, meats, hop oil, beer, brandy, rum, malt whiskey, grape wines, cocoa, coffee, tea, peanuts, pecans, walnut, oats, soybeans, coconut oil, olive, passion fruit, mango, fgs, rice, sweet corn, corn tortillas, malt, caviar, shrimp, oysters, crab, crayfsh and mate
Verwenden
2-Heptanone is used as an industrial solvent; a solvent for
synthetic resin finishes; an inert reaction medium; a flavor
ingredient in foods; a fragrance ingredient in creams, lotions,
perfumes, soaps, and detergents.
synthetische
By oxidation of methyl n-amyl carbinol; also from n-amyl propionic acid or from ethyl butyl acetate.
Definition
ChEBI: Heptan-2-one is a dialkyl ketone with methyl and pentyl as the alkyl groups. It has a role as a pheromone and a mouse metabolite. It is a dialkyl ketone and a methyl ketone.
Allgemeine Beschreibung
A clear colorless liquid. Flash point 126°F. Less dense than water and only slightly soluble in water. Hence floats on water. Vapors heavier than air. Density 6.8 lb / gal. Used as a synthetic flavoring and in perfumes.
Air & Water Reaktionen
Flammable. Slightly soluble in water.
Reaktivit?t anzeigen
2-Heptanone reacts exothermically with many acids and bases to produce flammable gases (e.g., H2). The heat may be sufficient to start a fire in the unreacted portion. Reacts with reducing agents such as hydrides, alkali metals, and nitrides to produce flammable gas and heat. Incompatible with isocyanates, aldehydes, cyanides, peroxides, and anhydrides. Incompatible with many oxidizing agents including nitric acid, nitric acid/hydrogen peroxide mixture, and perchloric acid. May form peroxides [USCG, 1999].
Hazard
Moderate fire risk. Toxic by inhalation, skin
and eye irritant, narcotic in high concentration.
Brandgefahr
Combustible liquid, flash point (closed cup)
39.9°C (102°F), (open cup) 48.9°C (12°F);
vapor density 3.9 (air = 1) vapor pressure
2.6 torr at 20°C (68°F); autoignition temperature 393°C (740°F); fire-extinguishing agent:
“alcohol” foam; a water spray may be used
to cool below its flash point.
Methyl amyl ketone forms an explosive
mixture with air in the range 1.1% [at 66°C
(150.8°F)] to 7.9% [at 121°C (249.8°F)] by
volume. It can react explosively with strong
acids, alkalies, and oxidizing agents.
Sicherheitsprofil
Moderately toxic by
ingestion. Mildly toxic by inhalation and skin
contact. A skin irritant. A flammable liquid
when exposed to heat or flame; can react
with oxidizing materials. To fight fire, use
foam, CO2, dry chemical. When heated to
decomposition it emits acrid smoke and
fumes. See also KETONES.
Environmental Fate
Biological. Heukelekian and Rand (1955) reported a 10-d BOD value of 0.50 g/g which is
17.8% of the ThOD value of 2.81 g/g.
Chemical/Physical. Atkinson et al. (2000) studied the kinetic and products of the gas-phase
reaction of 2-heptanone with OH radicals in purified air at 25 °C and 740 mmHg. A relative rate
constant of 1.17 x 10
-11 cm
3/molecule·sec was calculated for this reaction. Reaction products
identified by GC, FTIR, and atmospheric pressure ionization tandem mass spectroscopy were
(with respective molar yields): formaldehyde, 0.38; acetaldehyde, λ0.05; propanal, λ0.05; butanal,
0.07; pentanal, 0.09; and molecular weight 175 organic nitrates.
2-Heptanone will not hydrolyze because it does not contain a hydrolyzable functional group.
Burns in air releasing carbon monoxide and carbon dioxide.
Versand/Shipping
UN1110 n-Amyl Methyl ketone, Hazard Class: 3;
Labels: 3-Flammable liquid.
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.
2-Heptanon Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
