2-Methylbutan-1-ol Chemische Eigenschaften,Einsatz,Produktion Methoden
ERSCHEINUNGSBILD
FARBLOSE FLüSSIGKEIT MIT CHARAKTERISTISCHEM GERUCH.
ARBEITSPLATZGRENZWERTE
TLV nicht festgelegt (ACGIH 2005).
MAK nicht festgelegt (DFG 2005).
AUFNAHMEWEGE
Aufnahme in den Körper durch Inhalation der Dämpfe und durch Verschlucken.
INHALATIONSGEFAHREN
Beim Verdampfen bei 20°C tritt langsam eine gesundheitsschädliche Kontamination der Luft ein.
WIRKUNGEN BEI KURZZEITEXPOSITION
WIRKUNGEN BEI KURZZEITEXPOSITION: Die Substanz reizt die Augen, die Haut und die Atemwege. Verschlucken kann zur Aufnahme in der Lunge führen; Gefahr der Aspirationspneumonie. Möglich sind Auswirkungen auf das Zentralnervensystem.
WIRKUNGEN NACH WIEDERHOLTER ODER LANGZEITEXPOSITION
Die Flüssigkeit entfettet die Haut.
LECKAGE
Ausgelaufene Flüssigkeit möglichst in abdichtbaren Metall- oder Glasbehältern sammeln. Reste mit Sand oder inertem Absorptionsmittel aufnehmen und an einen sicheren Ort bringen.
R-Sätze Betriebsanweisung:
R10:Entzündlich.
R20:Gesundheitsschädlich beim Einatmen.
R37:Reizt die Atmungsorgane.
R66:Wiederholter Kontakt kann zu spröder oder rissiger Haut führen.
S-Sätze Betriebsanweisung:
S46:Bei Verschlucken sofort ärztlichen Rat einholen und Verpackung oder Etikett vorzeigen.
Chemische Eigenschaften
(+/–)2-Methyl-1-butanol has a cooked, roasted aroma with fruity or alcoholic undernotes.
Occurrence
Reportedly present in over 120 natural food products, including apple, apricot, banana, orange, bilberry, black
currant, cranberry, papaya, strawberry, tomato and alcoholic beverages
Verwenden
2-Methyl-1-butanol is a whiskey-scented amyl alcohol that is naturally present in all fruits wine and beer. 2-Methyl-1-butanol is commercially used as a solvent in paints and oils and as flavorant in many processed foods. 2-Methyl-1-butanol has a characteristic redolence, which is thought to account for its active properties as an attractant for hornets and certain wasps, such as yellowjackets, in traps. As a biochemical active ingredient, it has a non-toxic mode of action – targeted pests are killed through physical entrapment.
Vorbereitung Methode
2-methyl-1-butanol are refined from ethanol production as
fusel oil. Isoamyl alcohols are used as solvents
for oils, fats, resins, and waxes; in the plastics industry in
spinning polyacrylonitrile; and in manufacturing lacquers,
chemicals, and pharmaceuticals.
synthetische
Prepared from hydroboration of 2-methyl-1-butene. (–)2-Methyl-1-butanol is isolated by fractional distillation of
fusel oil
Definition
The
active alcohol from fusel oil. The synthetic product
is a racemic mixture of both dextroand levorotatory compounds and therefore not optically active.
Allgemeine Beschreibung
S-(-)-2-Methyl-1-butanol is a precursor for the synthesis of chiral liquid crystals. It is a potential new-biofuel.
Hazard
Moderate fire and explosion risk. Toxic by
ingestion, inhalation, and skin absorption.
Sicherheitsprofil
Moderately toxic by
skin contact and intraperitoneal routes.
Mddly toxic by ingestion. An eye, skin, and
mucous membrane irritant. Can cause
deafness, delirium, headache, nausea, and
vomiting. Flammable liquid when exposed
to heat, flame, or oxidizers. Explosive in the
form of vapor when exposed to heat or
flame. Incompatible with H2S3. To fight fire,
use alcohol foam, spray, mist, dry chemical.
When heated to decomposition it emits
acrid smoke and irritating fumes. See also
ALCOHOLS.
mögliche Exposition
(n-isomer); Suspected reprotoxic hazard,
Primary irritant (w/o allergic reaction), (iso-, primary):
Possible risk of forming tumors, Primary irritant (w/o allergic
reaction), (sec-, active primary-, and other isomers)
Primary irritant (w/o allergic reaction). Used as a solvent in
organic synthesis and synthetic flavoring, pharmaceuticals,
corrosion inhibitors; making plastics and other chemicals;
as a flotation agent. The (n-isomer) is used in preparation
of oil additives, plasticizers, synthetic lubricants, and as a
solvent.
Versand/Shipping
UN2811 Pentanols, Hazard Class: 3; Labels: 3-
Flammable liquid. UN1987 Alcohols, n.o.s., Hazard Class:
3; Labels: 3-Flammable liquid.
läuterung methode
Reflux the butanol with CaO, distil, reflux with magnesium and again fractionally distil it. A small sample of highly purified material is obtained by fractional crystallisation after conversion into a suitable ester such as the trinitrophthalate or the 3-nitrophthalate. The latter is converted to the cinchonine salt in acetone and recrystallised from CHCl3 by adding pentane. The salt is saponified, extracted with ether, and fractionally distilled. [Terry et al. J Chem Eng Data 5 403 1960, Beilstein 1 IV 1666.]
Inkompatibilitäten
Forms an explosive mixture with air.
Contact with strong oxidizers and hydrogen trisulfide may
cause fire and explosions. Incompatible with strong acids.
Violent reaction with alkaline earth metals forming hydrogen,
a flammable gas.
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-Methylbutan-1-ol Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
