3,5-Dibrom-2-hydroxybenzaldehyd

Bezeichnung:3,5-Dibrom-2-hydroxybenzaldehyd

CAS-Nr90-59-5

Englisch Name:3,5-Dibromosalicylaldehyde

CBNumberCB2343352

SummenformelC7H4Br2O2

Molgewicht279.91

MOL-Datei90-59-5.mol

Synonyma

3,5-Dibrom-2-hydroxybenzaldehyd

3,5-Dibrom-2-hydroxybenzaldehyd physikalisch-chemischer Eigenschaften

Schmelzpunkt	82-83.5 °C (lit.)
Siedepunkt	261.2±35.0 °C(Predicted)
Dichte	1.9661 (rough estimate)
Brechungsindex	1.4970 (estimate)
storage temp.	Keep in dark place,Sealed in dry,Room Temperature
Löslichkeit	methanol: soluble25mg/mL, clear, yellow to brown
Aggregatzustand	Crystalline Powder
pka	6.08±0.23(Predicted)
Farbe	Yellow to yellow-brown
Wasserlöslichkeit	Soluble in methanol 25 mg/mL. Insoluble in water.
Sensitive	Air Sensitive
Merck	14,3027
BRN	1424739
InChIKey	JHZOXYGFQMROFJ-UHFFFAOYSA-N
CAS Datenbank	90-59-5(CAS DataBase Reference)
NIST chemische Informationen	3,5-Dibromosalicylaldehyde(90-59-5)
EPA chemische Informationen	Benzaldehyde, 3,5-dibromo-2-hydroxy- (90-59-5)

Sicherheit

Kennzeichnung gefährlicher	Xi
R-Sätze:	36/37/38
S-Sätze:	26-37/39-24/25
RIDADR	UN 3077 9 / PGIII
WGK Germany	3
RTECS-Nr.	CU5609000
HazardClass	9
PackingGroup	III
HS Code	29130000

Gefahreninformationscode (GHS)

3,5-Dibromosalicylaldehyde Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
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.
S24/25:Berührung mit den Augen und der Haut vermeiden.
Chemische Eigenschaften
yellow to yellow-brown crystalline powder.
3,5-Dibromosalicylaldehyde has an aromatic odor, and like salicylaldehyde, the compound colors the skin bright yellow. It is readily soluble in ether, benzene, chloroform, and hot alcohol. It imparts a yellow colour to cold water and is slightly soluble in boiling water, so it may be purified by distillation with steam. With the addition of sodium hydroxide, the brilliant yellow sodium salt separates; it is difficultly soluble in cold water or alcohol but more readily soluble when heated with these solvents.
Verwenden
3,5-Dibromosalicylaldehyde reacts with alkyl cyanoacetates in the presence of ammonium acetate to yield 4H- chromenes. It can be used in the synthesis of Schiff base and can be used as reactant for synthesis of Schiff base ligands which forms mononuclear complexes with copper(II), nickel(II), zinc(II) and cobalt(II).
Allgemeine Beschreibung
3,5-Dibromosalicylaldehyde reacts with alkyl cyanoacetates in the presence of ammonium acetate to yield 4H- chromenes.
Synthese
3,5-Dibromosalicylaldehyde was obtained in nearly quantitative yield by dissolving 20 g. of salicylaldehyde in 100 cc. of glacial acetic acid, and adding a solution of 20 cc in small portions. of bromine in 100 cc. of glacial acetic acid[1].
Einzelnachweise
[1] Brewster, C. M. “SCHIFF’S BASES FROM 3,5-DIBROMO-SALICYLALDEHYDE.” Journal of the American Chemical Society 46 11 (1924): 2463–2468.

3,5-Dibromosalicylaldehyde Upstream-Materialien And Downstream Produkte

3,5-Dibrom-2-hydroxybenzaldehyd Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

90-59-5, 3,5-Dibromosalicylaldehyde Verwandte Suche:

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