N-Methylpropionamid

Bezeichnung:N-Methylpropionamid

CAS-Nr1187-58-2

Englisch Name:N-Methylpropionamide

CBNumberCB7468599

SummenformelC4H9NO

Molgewicht87.12

MOL-Datei1187-58-2.mol

Synonyma

N-Methylpropionamid

N-Methylpropionamid physikalisch-chemischer Eigenschaften

Schmelzpunkt	-43 °C (lit.)
Siedepunkt	146 °C/90 mmHg (lit.)
Dichte	0.931 g/mL at 25 °C (lit.)
Brechungsindex	n20/D 1.436(lit.)
Flammpunkt	222 °F
Aggregatzustand	clear liquid
pka	16.61±0.46(Predicted)
Wichte	0.93
Farbe	Colorless
BRN	1737640
CAS Datenbank	1187-58-2(CAS DataBase Reference)
NIST chemische Informationen	Propanamide, N-methyl-(1187-58-2)
EPA chemische Informationen	Propanamide, N-methyl- (1187-58-2)

Sicherheit

Kennzeichnung gefährlicher	Xi
R-Sätze:	36/37/38
S-Sätze:	26-36
WGK Germany	3
RTECS-Nr.	UE4515000
F	3
HS Code	2924.19.8000

Gefahreninformationscode (GHS)

N-Methylpropionamide 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.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
Chemische Eigenschaften
CLEAR COLOURLESS LIQUID
Verwenden
N-Methylpropionamide has been used to investigate amide-induced phase separation of hexafluoro-2-propanol-water mixtures.
läuterung methode
The amide is a colourless, odourless, neutral liquid at room temperature with a high dielectric constant. The amount of water present can be determined directly by Karl Fischer titration, GLC and NMR have been used to detect unreacted propionic acid. Commercial material of high quality is available, probably from the condensation of anhydrous methylamine with 50% excess of propionic acid. Rapid heating to 120-140o with stirring favours the reaction by removing water either directly or as the ternary xylene azeotrope. The quality of the distillate improves during the distillation. N-Methylpropionamide can be dried over CaO. Water and unreacted propionic acid are removed as their xylene azeotropes. It is then distilled in a vacuum. Material used as an electrolyte solvent (specific conductance less than 10-6 ohm-1 cm -1) is obtained by fractional distillation under reduced pressure, and storage over BaO or molecular sieves because it readily absorbs moisture from the atmosphere on prolonged storage. [Hoover Pure Appl Chem 37 581 1974, Recommended Methods for Purification of Solvents and Tests for Impurities, Coetzee Ed., Pergamon Press, 1982, Beilstein 4 IV 183.]

N-Methylpropionamide Upstream-Materialien And Downstream Produkte

N-Methylpropionamid Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

1187-58-2, N-Methylpropionamide Verwandte Suche:

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