Citronella oil Chemische Eigenschaften,Einsatz,Produktion Methoden
R-S?tze Betriebsanweisung:
R34:Verursacht Ver?tzungen.
R43:Sensibilisierung durch Hautkontakt m?glich.
R41:Gefahr ernster Augensch?den.
R37/38:Reizt die Atmungsorgane und die Haut.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
S-S?tze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn m?glich, dieses Etikett vorzeigen).
Beschreibung
Citronella oil is present as a repellent in many sprays
that contain other repellents, pyrethrins, and synergists.
These formulations have insecticidal and repellent actions
against biting insects and flies on cattle, dogs, horses, and
pigs. The major constituent of citronella oil is citronellal
(to which the information below applies).
Chemische Eigenschaften
Sri Lanka (Ceylon) citronella oil is produced by steam distillation of fresh
or partly dried leaves and stems of the grass species Cymbopogon nardus
(L.) Rendle – the so-called lenabatu – cultivated in Sri Lanka. It is a pale
yellow to brownish liquid with a fresh, grassy, camphoraceous odor.
d
2020 0.891–0.910; n
20D 1.479–1.490; α
20D ?25 ° to ?12 °; solubility: 1 vol in
not more than 2 vol of 80% ethanol at 20 ℃; ester number (after acetylation):
157–200; carbonyl number: min. 18, corresponding to min. 5% of carbonyl compounds (calculated as citronellal).The content of citronellal by
GC varies from 3% to 6%. Other typical constituents are borneol (4–7%),
citronellol (3–8.5%), geraniol (15–23%), and methyl isoeugenol (7–11%).
Sri Lanka (Ceylon) oil is less valuable than Java oil and is used almost
exclusively for perfuming toilet soaps, washing powders, and household
products. Annual production is only ～25 t.
Physikalische Eigenschaften
The Ceylon oil is a pale yellow to yellowish-brown liquid. The Java-type oil is a clear, mobile,
light yellow to brownish liquid.
Occurrence
Found in the grasses of Cymbopogon Nardus (Rendle), Andropogon Nardus (L) and Andropogon Nardus Ceylon, de Jong (Fam. Gramineae).
Verwenden
Soap perfumery, manufacture of hydroxycitronellal, insect repellent.
synthetische
By direct steam-distillation of the dried grass.
Definition
Has both d- and l-isomers. C
9H17CHO.
Essential oil composition
The main constituents of citronella oil are geraniol and citronellal
Citronella oil Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
