2-Methyl-1-pentanol

Bezeichnung:2-Methyl-1-pentanol

Englisch Name:2-METHYL-1-PENTANOL

CBNumberCB1118126

SummenformelC6H14O

Molgewicht102.17

Synonyma

2-Methylpentan-1-ol

2-Methyl-1-pentanol

2-Methyl-1-pentanol physikalisch-chemischer Eigenschaften

Schmelzpunkt	-48.42°C (estimate)
Siedepunkt	148 °C(lit.)
Dichte	0.824 g/mL at 25 °C(lit.)
Dampfdichte	3.5 (vs air)
Dampfdruck	1.5 mm Hg ( 20 °C)
Brechungsindex	n20/D 1.418(lit.)
Flammpunkt	123 °F
storage temp.	2-8°C
pka	15.05±0.10(Predicted)
Aggregatzustand	Liquid
Farbe	Colorless to Almost colorless
Explosionsgrenze	9.6%
Wasserlöslichkeit	5.96g/L(25 ºC)
BRN	1718974
LogP	1.702 (est)
CAS Datenbank	105-30-6(CAS DataBase Reference)
EPA chemische Informationen	2-Methyl-1-pentanol (105-30-6)

Sicherheit

Kennzeichnung gefährlicher	Xn
R-Sätze:	10-22
S-Sätze:	24/25
RIDADR	UN 1987 3/PG 3
WGK Germany	3
RTECS-Nr.	SA7175000
HS Code	2905.14.5010
HazardClass	3.2
PackingGroup	III
Giftige Stoffe Daten	105-30-6(Hazardous Substances Data)
Toxizität	LD50 orl-rat: 1410 mg/kg AMIHBC 10,61,54

Gefahreninformationscode (GHS)

R-Sätze Betriebsanweisung:
R10:Entzündlich.
R22:Gesundheitsschädlich beim Verschlucken.
S-Sätze Betriebsanweisung:
S24/25:Berührung mit den Augen und der Haut vermeiden.
Chemische Eigenschaften
CLEAR COLOURLESS LIQUID
Verwenden
Solvent, intermediate.
Vorbereitung Methode
2-Methyl-1-pentanol is prepared by the aldol condensation of propionaldehyde and subsequent hydrogenation of the intermediate 2-methyl-2-pentanol. Commercially, the methyl- 1-pentanols are rarely used alone but as amixture.
Synthesis Reference(s)
Journal of the American Chemical Society, 77, p. 6052, 1955 DOI: 10.1021/ja01627a077
Allgemeine Beschreibung
Nonaqueous lipase-catalyzed kinetic resolution of racemic 2-methyl-1-pentanol in a continuously operated fixed bed reactor has been reported. Molar excess enthalpies of binary mixtures of 2-methyl-1-pentanol with n-hexane and its isomers has been measured in a flow microcalorimeter.
Hazard
Moderate fire risk.
Sicherheitsprofil
Moderately toxic by ingestion and skin contact. A skin and severe eye irritant. Human systemic irritant by inhalation. A flammable liquid; can react with oxidizing materials. To fight fire, use Con, dry chemical. When heated to decomposition it emits smoke and acrid fumes.
läuterung methode
Dry the 1-pentanol with Na2SO4 and distil it. [Beilstein 1 IV 1713.]