2-Methylundecanal

2-METHYLUNDECANAL Struktur
110-41-8
CAS-Nr.
110-41-8
Bezeichnung:
2-Methylundecanal
Englisch Name:
2-METHYLUNDECANAL
Synonyma:
MNA;ALDEHYDE C-12 MNA;ALDEHYDE C-12;METHYL NONYL ACETALDEHYDE;FEMA 2794;methyln-nonylaceticaldehyde;FEMA 2749;AldehydeMNA;aldehydem.n.a.;Aldehyde M.N.A.
CBNumber:
CB3113392
Summenformel:
C12H24O
Molgewicht:
184.32
MOL-Datei:
110-41-8.mol

2-Methylundecanal 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
LogP
4.9 at 35℃
CAS Datenbank
110-41-8(CAS DataBase Reference)
EPA chemische Informationen
Undecanal, 2-methyl- (110-41-8)
Sicherheit
  • Risiko- und Sicherheitserklärung
  • Gefahreninformationscode (GHS)
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
Bildanzeige (GHS) GHS hazard pictogramsGHS hazard pictograms
Alarmwort Warnung
Gefahrenhinweise
Code Gefahrenhinweise Gefahrenklasse Abteilung Alarmwort Symbol P-Code
H315 Verursacht Hautreizungen. Hautreizung Kategorie 2 Warnung GHS hazard pictogramssrc="/GHS07.jpg" width="20" height="20" /> P264, P280, P302+P352, P321,P332+P313, P362
H317 Kann allergische Hautreaktionen verursachen. Sensibilisierung der Haut Kategorie 1A Warnung GHS hazard pictogramssrc="/GHS07.jpg" width="20" height="20" /> P261, P272, P280, P302+P352,P333+P313, P321, P363, P501
H400 Sehr giftig für Wasserorganismen. Kurzfristig (akut) gewässergefährdend Kategorie 1 Warnung GHS hazard pictogramssrc="/GHS09.jpg" width="20" height="20" /> P273, P391, P501
H410 Sehr giftig für Wasserorganismen mit langfristiger Wirkung. Langfristig (chronisch) gewässergefährdend Kategorie 1 Warnung GHS hazard pictogramssrc="/GHS09.jpg" width="20" height="20" /> P273, P391, P501
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.
P362 Kontaminierte Kleidung ausziehen und 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

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.

Sicherheitsprofil

Low toxicity by ingestion and skin contact. When heated to decomposition it emits acrid smoke and irritating fumes.

Stoffwechsel

See monograph on aldehyde C-8*.

2-Methylundecanal Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


2-Methylundecanal Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

Global( 150)Lieferanten
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110-41-8(2-Methylundecanal)Verwandte Suche:


  • 2-METHYLUNDECANAL
  • 2-METHYLUNDECYL ALDEHYDE
  • 2-METHYLHENDECANAL
  • 2-METHYLNONYLACETALDEHYDE
  • FEMA 2749
  • Aldehyde M.N.A.
  • aldehydem.n.a.
  • AldehydeMNA
  • METHYL-N-NONYLACETALDEHYDE
  • 2-Methyl-1-undecanal
  • 2-methyl-undecana
  • Methylnonylacetic aldehyde
  • -Methylundecanal
  • Undecanal,2-methyl-
  • 2-methyl n-undecanoic aldehyde
  • 2-METHYLUNDECANAL 94+% FCC
  • Isododecylic aldehyde
  • 2-METHYLUNDECANAL FCC
  • 2-Methylundecanal,95%
  • ALDEHYDE,METHYLNONYLACETIC
  • ALDEHYD C 12 MNA (METHYLUNDECANAL, 2-)
  • Methyl Nonyl Actaldehyde
  • 2-METHYLUNDECANAL USP/EP/BP
  • 2-methyl undecanal (aldehyde C-12 mna)
  • TIANFU-CHEM - 2-METHYLUNDECANAL
  • ALDEHYDE C-12 MNA
  • ALDEHYDE C-12
  • FEMA 2794
  • METHYL NONYL ACETALDEHYDE
  • methyln-nonylaceticaldehyde
  • MNA
  • 110-41-8
  • CH3CH29CHCH3CHO
  • CH3CH28CHCH3CHO
  • 110418
  • Organic Building Blocks
  • Aldehydes
  • Building Blocks
  • C10 to C21
  • Carbonyl Compounds
  • ALDEHYDE
  • C10 to C21
  • Carbonyl Compounds
  • Industrial/Fine Chemicals
  • Alphabetical Listings
  • Flavors and Fragrances
  • M-N
  • Aldehydes
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