3,7-Dimethylocta-2,6-diensure

Bezeichnung:3,7-Dimethylocta-2,6-diensure

CAS-Nr459-80-3

Englisch Name:GERANIC ACID

CBNumberCB9323850

SummenformelC10H16O2

Molgewicht168.23

MOL-Datei459-80-3.mol

Synonyma

3,7-Dimethylocta-2,6-diensure

3,7-Dimethylocta-2,6-diensure physikalisch-chemischer Eigenschaften

Schmelzpunkt	185-186 °C (decomp)
Siedepunkt	250 °C(lit.)
Dichte	0.97 g/mL at 25 °C(lit.)
Brechungsindex	n20/D 1.484(lit.)
FEMA	4121 \| GERANIC ACID
Flammpunkt	>230 °F
storage temp.	Sealed in dry,Room Temperature
Löslichkeit	H2O: insoluble
pka	5.17±0.33(Predicted)
Farbe	Colorless liquid, slightly viscous, and increasing in viscosity with age or exposure to air and daylight.
Geruch (Odor)	at 10.00 % in propylene glycol. dry weedy acidic green moldy feet woody
Geruchsart	green
JECFA Number	1825
BRN	1763804
LogP	3.46
CAS Datenbank	459-80-3(CAS DataBase Reference)
EPA chemische Informationen	2,6-Octadienoic acid, 3,7-dimethyl- (459-80-3)

Sicherheit

Kennzeichnung gefährlicher	Xn,Xi
R-Sätze:	21-38
S-Sätze:	36/37
WGK Germany	3
RTECS-Nr.	RG5380000
F	10
Hazard Note	Irritant
TSCA	Yes
HS Code	2916199590

Gefahreninformationscode (GHS)

GERANIC ACID Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R21:Gesundheitsschädlich bei Berührung mit der Haut.
R38:Reizt die Haut.
S-Sätze Betriebsanweisung:
S36/37:Bei der Arbeit geeignete Schutzhandschuhe und Schutzkleidung tragen.
Chemische Eigenschaften
Colorless viscous liquid; neat; sweet, foral green, geranium leafike, woody with a citrus orange body nuance.
Occurrence
Reported found in tea, tomato and wine
Verwenden
Possible uses: orange, tea, mint, ripe fruit and melon notes.
Definition
ChEBI: Geranic acid is a polyunsaturated fatty acid that is octa-2,6-dienoic acid bearing two methyl substituents at positions 3 and 7 (the 2E-isomer). It has a role as a pheromone, an EC 1.14.18.1 (tyrosinase) inhibitor, a plant metabolite, an antifungal agent and a melanin synthesis inhibitor. It is a polyunsaturated fatty acid, a methyl-branched fatty acid, a monoterpenoid and an alpha,beta-unsaturated monocarboxylic acid. It is a conjugate acid of a geranate.
Vorbereitung Methode
Geranic acidacid is produced
1) from 2-Methylhepten-2-one-6 with Iodoor Bromoacetic ester and a Zinc type catalyst.
2) by oxidation of Citral.
Aroma threshold values
Medium strength odor, green type; recommend smelling in a 10.0% solution or less.
Taste threshold values
Sweet, woody, leafy, fruity body with some mouthfeel effects at 20 ppm.
Allgemeine Beschreibung
Geranic acid is a monoterpenemainly used in flavor, fragrance, cosmetics and agro-industries. In vitro studies show that geranic acid exhibits strong inhibitory activity against Fusarium graminearum and Colletotrichum graminicola, the two main fungal pathogens of maize. It may be responsible for the potent tyrosinase inhibitory activity of lemongrass (Cymbopogon citratus).
Biochem/physiol Actions
Odor (neat): sweet, floral green, geranium leaf-like, woody with a citrus orange body nuance.

GERANIC ACID Upstream-Materialien And Downstream Produkte

3,7-Dimethylocta-2,6-diensure Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

459-80-3, GERANIC ACID Verwandte Suche:

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