p-Tolualdehyd

Bezeichnung:p-Tolualdehyd

CAS-Nr104-87-0

Englisch Name:p-Tolualdehyde

CBNumberCB3774896

SummenformelC8H8O

Molgewicht120.15

MOL-Datei104-87-0.mol

Synonyma

p-Tolualdehyd

p-Tolualdehyd physikalisch-chemischer Eigenschaften

Schmelzpunkt	-6 °C
Siedepunkt	204-205 °C (lit.) 82-85 °C/11 mmHg (lit.)
Dichte	1.019 g/mL at 25 °C (lit.)
Dampfdruck	0.33 hPa (25 °C)
Brechungsindex	n20/D 1.545(lit.)
FEMA	3068 \| TOLUALDEHYDES (MIXED O,M,P)
Flammpunkt	176 °F
storage temp.	Store below +30°C.
Löslichkeit	water: soluble0.25 g/L at 25°C
Aggregatzustand	Liquid
Farbe	Clear colorless to yellow
Geruch (Odor)	at 5.00 % in dipropylene glycol. fruity cherry deep phenolic
Geruchsart	fruity
Explosionsgrenze	0.9-5.6%(V)
Wasserlöslichkeit	0.25 g/L (25 ºC)
Sensitive	Air Sensitive
BRN	385772
InChIKey	FXLOVSHXALFLKQ-UHFFFAOYSA-N
LogP	2.25
CAS Datenbank	104-87-0(CAS DataBase Reference)
NIST chemische Informationen	Benzaldehyde, 4-methyl-(104-87-0)
EPA chemische Informationen	4-Methylbenzaldehyde (104-87-0)

Sicherheit

Kennzeichnung gefährlicher	Xn
R-Sätze:	22-36/37/38-36/38
S-Sätze:	26-36-37/39
RIDADR	NA 1993 / PGIII
WGK Germany	1
RTECS-Nr.	CU7034500
F	9-23
Selbstentzündungstemperatur	395 °C DIN 51794
TSCA	Yes
HS Code	29122900
Giftige Stoffe Daten	104-87-0(Hazardous Substances Data)
Toxizität	LD50 orally in Rabbit: 1600 mg/kg

Gefahreninformationscode (GHS)

p-Tolualdehyde Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R22:Gesundheitsschädlich beim Verschlucken.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
R36/38:Reizt die Augen und die Haut.
S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
S37/39:Bei der Arbeit geeignete Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
Chemische Eigenschaften
Clear colorless to pale yellow liquid. Soluble in alcohol and oils. Sweet-herbaceous, Bitter-almond-like moderately tenacious odor. Not as pungent as Benzaldehyde, but more herbaceous-warm. Intensely sweet, warm-fruity and Bitteralmond-like taste in concentrations lower than 500 ppm.
Verwenden
p-Tolualdehyde may be used as an analytical reference standard for the quantification of the analyte in the following:
- Air samples using high-performance liquid chromatography with UV detection (HPLC-UV).
- Mango cultivars using gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS).
Verwenden
p-Tolualdehyde is used as an intermediate for the synthesis of pharmaceuticals, dyes perfumes and agrochemicals. It is also used as a fixative of flavorings. It is also used as an important organic intermediates, used for spices, triphenylmethane dye synthesis, etc.
Verwenden
p-Tolualdehyde is made by the Vilsmeier reaction employing toluene and dimethylformamide or the Guttermann–Koch reaction employing toluene and carbon monoxide.
Definition
ChEBI: A tolualdehyde compound with the methyl substituent at the 4-position.
synthetische
p-Tolualdehyde is prepared by oxidation of mixed Tolylalcohols.
Synthesis Reference(s)
Journal of the American Chemical Society, 105, p. 7175, 1983 DOI: 10.1021/ja00362a028
Tetrahedron Letters, 29, p. 6265, 1988 DOI: 10.1016/S0040-4039(00)82321-7
Allgemeine Beschreibung
p-Tolualdehyde (4-Methylbenzaldehyde) is an aromatic aldehyde. It has been generated as major oxygenated product during the UV light irradiated oxygenation of p-xylene, via photoinduced electron transfer mechanism. It undergoes condensation reaction with diiron μ-ethylidyne complex to afford μ-vinylcarbyne complex (92% yield).
Flammability and Explosibility
Not classified
läuterung methode
Steam distil the aldehyde, dry it with CaSO4, then fractionally distil it. [Beilstein 7 IV 672.]

p-Tolualdehyde Upstream-Materialien And Downstream Produkte

p-Tolualdehyd Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

104-87-0, p-Tolualdehyde Verwandte Suche:

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