4-Hydroxy-3,5-dimethoxybenzaldehyd

Bezeichnung:4-Hydroxy-3,5-dimethoxybenzaldehyd

CAS-Nr134-96-3

Englisch Name:Syringaldehyde

CBNumberCB7405808

SummenformelC9H10O4

Molgewicht182.17

MOL-Datei134-96-3.mol

Synonyma

4-Hydroxy-3,5-dimethoxybenzaldehyd

4-Hydroxy-3,5-dimethoxybenzaldehyd physikalisch-chemischer Eigenschaften

Schmelzpunkt	110-113 °C(lit.)
Siedepunkt	192-193 °C14 mm Hg(lit.)
Dichte	1.013
FEMA	4049 \| 4-HYDROXY-3,5,-DIMETHOXY BENZALDEHYDE
Brechungsindex	1.4500 (estimate)
Flammpunkt	192-193°C/14mm
storage temp.	Keep in dark place,Sealed in dry,Room Temperature
Löslichkeit	Chloroform, Methanol (Slightly)
Aggregatzustand	Crystalline Powder
pka	7.80±0.23(Predicted)
Farbe	Light yellow-green to brown
Geruch (Odor)	at 100.00 %. mild plastic woody tonka sweet
Geruchsart	green
Biologische Quelle	synthetic
Wasserlöslichkeit	very sparingly soluble
Sensitive	Air Sensitive
Merck	14,9015
JECFA Number	1878
BRN	784514
Stabilität	Hygroscopic
LogP	1.30
CAS Datenbank	134-96-3(CAS DataBase Reference)
NIST chemische Informationen	Benzaldehyde, 4-hydroxy-3,5-dimethoxy-(134-96-3)
EPA chemische Informationen	Syringaldehyde (134-96-3)

Sicherheit

Kennzeichnung gefährlicher	Xn,Xi
R-Sätze:	22-36/37/38
S-Sätze:	26-37/39-36
WGK Germany	3
RTECS-Nr.	CU5760000
Hazard Note	Irritant
TSCA	Yes
HS Code	29124900

Gefahreninformationscode (GHS)

Syringaldehyde 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.
S37/39:Bei der Arbeit geeignete Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
Physikalische Eigenschaften
light yellow-green to brown crystalline powder.
Chemische Eigenschaften
4-Hydroxy-3,5-dimethoxybenzaldehyde has sweet, balsamic-floral odor of considerable tenacity. lt has notes in common with Vanillin but is not as sweet and not as Vanilla-like, more floral and slightly greener.
Occurrence
Reported found in pineapple, beer, wine, grape brandy, rum, many different whisky products, sherry, roasted barley and hardwood smoke
Verwenden
Syringaldehyde is used in biological studies for the isolation and structural characterization of milled wood lignin, dioxane lignin, and cellulolytic lignin preparation from Brewer''s spent grain.
Verwenden
Syringaldehyde may be used as an analytical reference standard for the determination of the analyte in guacoextracts and pharmaceutical preparations,(1) cognacs and wines,(2) plum brandies,(4) and wheat straw(5) by various chromatography techniques.
Definition
ChEBI: A hydroxybenzaldehyde that is 4-hydroxybenzaldehyde substituted by methoxy groups at positions 3 and 5. Isolated from Pisonia aculeata and Panax japonicus var. major, it exhibits hypoglycemic activity.
synthetische
Vanillin is converted to 5-iodovanillin, which is treated with sodium methoxide to form 4-hydroxy-3,5- dimethyxybenzaldehyde.
Aroma threshold values
Aroma characteristics at 1.0%: weak sweet, slightly smoky, cinnamic, vanilla, leather-like with a phenolic medicinal nuance
Synthesis Reference(s)
Canadian Journal of Chemistry, 31, p. 476, 1953 DOI: 10.1139/v53-064
Synthetic Communications, 20, p. 2659, 1990 DOI: 10.1080/00397919008051474
Allgemeine Beschreibung
Syringaldehyde is an aromatic phenolic aldehyde and a degradation product of lignin. It exhibits antioxidant activity and is reported to inhibit prostaglandin synthetase enzyme. The synthetic form of syringaldehyde is commercially used in pharmaceuticals, food, cosmetics, textiles, pulp and paper industries.
Biochem/physiol Actions
Odor at 1.0%
läuterung methode
Crystallise syringaldehyde from pet ether. [Beilstein 8 H 391, 8 IV 2718.]

Syringaldehyde Upstream-Materialien And Downstream Produkte

4-Hydroxy-3,5-dimethoxybenzaldehyd Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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