2-Methylundecanal

Bezeichnung:2-Methylundecanal

CAS-Nr110-41-8

Englisch Name:2-METHYLUNDECANAL

CBNumberCB3113392

SummenformelC12H24O

Molgewicht184.32

MOL-Datei110-41-8.mol

Synonyma

2-Methylundecanal

2-Methylundecanal physikalisch-chemischer Eigenschaften

Siedepunkt	171 °C(lit.)
Dichte	0.83 g/mL at 25 °C(lit.)
Dampfdruck	2.4Pa at 20℃
Brechungsindex	n20/D 1.432(lit.)
FEMA	2749 \| 2-METHYLUNDECANAL
Flammpunkt	200 °F
Geruch (Odor)	at 1.00 % in dipropylene glycol. fresh amber aldehydic moss citrus tuberose metallic waxy coumarinic
Geruchsart	aldehydic
Wasserlöslichkeit	1.3mg/L at 20℃
JECFA Number	275
InChI	InChI=1S/C12H24O/c1-3-4-5-6-7-8-9-10-12(2)11-13/h11-12H,3-10H2,1-2H3
InChIKey	NFAVNWJJYQAGNB-UHFFFAOYSA-N
SMILES	C(=O)C(C)CCCCCCCCC
LogP	4.9 at 35℃
CAS Datenbank	110-41-8(CAS DataBase Reference)
EPA chemische Informationen	Undecanal, 2-methyl- (110-41-8)

Sicherheit

WGK Germany	1
RTECS-Nr.	YQ1509000
Toxizität	The acute oral LD₅₀ value was reported as > 5 g/kg in the rat . The acute dermal LD₅₀ for sample no. 71-16 was reported to be > 10 g/kg in the rabbit

Gefahreninformationscode (GHS)

Bildanzeige (GHS)
Alarmwort

Warnung
Gefahrenhinweise

H315：Verursacht Hautreizungen.

H317：Kann allergische Hautreaktionen verursachen.

H400：Sehr giftig für Wasserorganismen.

H410：Sehr giftig für Wasserorganismen mit langfristiger Wirkung.
Sicherheit

P261：Einatmen von Staub vermeiden.

P264：Nach Gebrauch gründlich waschen.

P264：Nach Gebrauch gründlich waschen.

P272：Kontaminierte Arbeitskleidung nicht außerhalb des Arbeitsplatzes tragen.

P273：Freisetzung in die Umwelt vermeiden.

P280：Schutzhandschuhe/Schutzkleidung/Augenschutz tragen.

P302+P352：BEI BERÜHRUNG MIT DER HAUT: Mit viel Wasser/... (Hersteller kann, falls zweckmäßig, ein Reinigungsmittel angeben oder, wenn Wasser eindeutig ungeeignet ist, ein alternatives Mittel empfehlen) waschen.

P321：Besondere Behandlung

P332+P313：Bei Hautreizung: Ärztlichen Rat einholen/ärztliche Hilfe hinzuziehen.

P333+P313：Bei Hautreizung oder -ausschlag: Ärztlichen Rat einholen/ärztliche Hilfe hinzuziehen.

P362：Kontaminierte Kleidung ausziehen und vor erneutem Tragen waschen.

P363：Kontaminierte Kleidung vor erneutem Tragen waschen.

P391：Verschüttete Mengen aufnehmen.

P501：Inhalt/Behälter ... (Entsorgungsvorschriften vom Hersteller anzugeben) zuführen.

2-METHYLUNDECANAL Chemische Eigenschaften,Einsatz,Produktion Methoden

Beschreibung
2-Methylundecanal has a characteristic fatty odor assuming a floral note on dilution. It has an acrid, fatty unpleasant flavor at high levels. At low levels, the flavor is honey- and nut-like. It may be prepared by cracking the corresponding glycidic acid; from α-nonyl acrolein; from methyl nonyl ketone and ethyl monochloroacetate in the presence of sodium ethylate.
Chemische Eigenschaften
clear colourless to yellowish liquid
Chemische Eigenschaften
2-Methylundecanal has a characteristic fatty odor assuming a floral note on dilution. At high levels, it has an acrid, fatty, unpleasant flavor. At low levels, the flavor is honey and nut-like.
Occurrence
Reported found in kumquat peel oil.
Verwenden
Perfumery, flavoring.
synthetische
2-Methylundecanal is reported as being found in nature. It is a colorless liquid, with an odor markedly different from that of the isomeric dodecanal. It has a fatty odor with incense and ambergris notes.
2-Methylundecanal is produced by two routes:
1) 2-Undecanone is converted into its glycidate by reaction with an alkyl chloroacetate. Saponification of the glycidate, followed by decarboxylation, yields 2-methylundecanal.
2) The second synthesis is based on the conversion of undecanal into 2- methyleneundecanal by reaction with formaldehyde in the presence of catalytic amounts of amines. Hydrogenation of 2-methyleneundecanal yields methylnonylacetaldehyde (MNA). A convenient process starts from 1-decene: hydroformylation gives a mixture consisting mainly of undecanal and 2-methyldecanal. Reaction of the crude product with formaldehyde in the presence of dibutylamine yields a mixture containing over 50% 2-methyleneundecanal. After hydrogenation of the double bond, pure 2-methylundecanal is separated from the by-products by fractional distillation.
In comparison with other fatty aldehydes, 2-methylundecanal is used in perfumery in rather large amounts to impart conifer notes, particularly fir impressions, but frequently also in fantasy compositions.
Taste threshold values
Taste characteristics at 2 ppm: waxy, fatty, metallic with a citrus nuance.
Flammability and Explosibility
Non flammable
Sicherheitsprofil
Low toxicity by ingestion and skin contact. When heated to decomposition it emits acrid smoke and irritating fumes.
Synthese
By cracking the corresponding glycidic acid; from α-nonyl acrolein; from methyl nonyl ketone and ethyl monochloroacetate in the presence of sodium ethylate
Stoffwechsel
See monograph on aldehyde C-8*.

2-METHYLUNDECANAL Upstream-Materialien And Downstream Produkte

2-Methylundecanal Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

110-41-8, 2-METHYLUNDECANAL Verwandte Suche:

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