4-(1-Methylethyl)benzaldehyd Chemische Eigenschaften,Einsatz,Produktion Methoden
R-Sätze Betriebsanweisung:
R22:Gesundheitsschädlich beim Verschlucken.
R36/37/38:Reizt die Augen, die Atmungsorgane und 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.
S37/39:Bei der Arbeit geeignete Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
Chemische Eigenschaften
Cuminaldehyde has a strong, pungent, cumin-like odor and similar taste.
Occurrence
Reported in a large number of essential oils, cumin, Acacia farnesiana, cinnamon, bitter orange, Mexican
lime, Eucalyptus globulus, rue, boldus, Artemisia hausiliensis and others. Also reported in lemon and mandarin peel oil, cinnamon
bark, anise, clove bud, cumin seed, turmeric, parsley, calabash nutmeg (Monodora myristica Dunal), angelica root, thyme, beef,
brandy, grape and mastic gum fruit oil.
Verwenden
Cuminaldehyde is a flavoring agent that is a liquid, colorless to yellow in appearance, with a strong pungent odor resembling cumin oil. It is insoluble in water and soluble in alcohol and ether. It is obtained from cumin oil. It is also termed p-, cumaldehyde, and cuminal.
synthetische
From p-isopropylbenzyl chloride and hexamethylenetetramine (Arctander, 1969).
Definition
ChEBI: A member of the class of benzaldehydes that is benzaldehyde substituted by an isopropyl group at position 4. It is a component of essential oils from Cumin and exhibits insecticidal activities.
Allgemeine Beschreibung
Cuminaldehyde is a constituent of cumin oil that exhibits strong antifungal and antibacterial activities.
Sicherheitsprofil
Moderately toxic by
ingestion and skin contact. A skin irritant.
Combustible liquid. When heated to
decomposition it emits acrid smoke and
irritating fumes. See also ALDEHYDES.
läuterung methode
A likely impurity is the benzoic acid. Check the IR for the presence of OH from CO2H, and the CO frequencies. If the acid is present, then dissolve the aldehyde in Et2O, wash it with 10% NaHCO3 until effervescence ceases, then with brine, dry over CaCl2, evaporate and distil the residual oil, preferably under vacuum. It is almost insoluble in H2O, but soluble in EtOH and Et2O. The thiosemicarbazone has m 147o after recrystallisation from aqueous EtOH, MeOH or *C6H6. [Crounse J Am Chem Soc 71 1263 1949, Bernstein et al. J Am Chem Soc 73 906 1951, Gensler & Berman J Am Chem Soc 80 4949 1958, Beilstein 7 H 318, 7 II 347, 7 III 1095, 7 IV 723.]
4-(1-Methylethyl)benzaldehyd Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
