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2-Methyltetrahydrofuran

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2-Methyltetrahydrofuran Basic information

Product Name:
2-Methyltetrahydrofuran
Synonyms:
  • 2-Methyltetrahydrofuran,For Grignard reaction,anhydrous, stabilized
  • 2-Methyltetrahydrofuran,99+%,Extra Dry,Stabilized
  • 2-Methyltetrahydrofuran,99+%,Extra Dry over Molecular Sieve,Stabilized
  • 2-Methyltetrahydrofuran,99+%,Extra Dry,stabilizer free
  • 2-Methyltetrahydrofuran ,99% [stabilized with BHT]
  • 2-Methyltetrahydrofuran,Tetrahydro-2-methylfuran, Tetrahydrosilvan
  • 2-Methyltetrahydrofu
  • 2-Methyltetrahydrofuran, Stabilized, AcroSeal, Extra Dry over Molecular Sieve, 99+%
CAS:
96-47-9
MF:
C5H10O
MW:
86.13
EINECS:
202-507-4
Product Categories:
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Mol File:
96-47-9.mol
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2-Methyltetrahydrofuran Chemical Properties

Melting point:
-136 °C
Boiling point:
78-80 °C(lit.)
Density 
0.86 g/mL at 25 °C(lit.)
vapor pressure 
136 hPa (20 °C)
refractive index 
n20/D 1.406(lit.)
Flash point:
10.4 °F
storage temp. 
Flammables area
solubility 
150g/l
form 
Liquid
color 
Clear colorless
explosive limit
1.2-5.7%(V)
Water Solubility 
15 g/100 mL (25 C)
FreezingPoint 
-136℃
BRN 
102448
Stability:
Stable, but highly flammable. Incompatible with oxidizing agents, strong acids, strong bases. May form explosive peroxides in storage, so often supplied with an inhibitor added.
CAS DataBase Reference
96-47-9(CAS DataBase Reference)
NIST Chemistry Reference
Furan, tetrahydro-2-methyl-(96-47-9)
EPA Substance Registry System
Furan, tetrahydro-2-methyl- (96-47-9)
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Safety Information

Hazard Codes 
F,Xi
Risk Statements 
11-19-36/37-2017/11/19
Safety Statements 
16-23-39-33-26
RIDADR 
UN 2536 3/PG 2
WGK Germany 
2
RTECS 
LU2800000
Autoignition Temperature
270 °C
TSCA 
Yes
HazardClass 
3
PackingGroup 
II
HS Code 
29321900
Toxicity
LD50 orally in Rabbit: > 300 - 2000 mg/kg LD50 dermal Rat > 2000 mg/kg

MSDS

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2-Methyltetrahydrofuran Usage And Synthesis

Chemical Properties

Colorless liquid; ether-like odor. Solubility in waterincreases with a decrease in temperature. Freelysoluble in most organic solvents.

Uses

Chemical intermediate, reaction solvent.

Hazard

Flammable, dangerous fire risk.

Purification Methods

Likely impurities are 2-methylfuran, methyldihydrofurans and hydroquinone (stabiliser, which is removed by distillation under reduced pressures). It is washed with 10% aqueous NaOH, dried, vacuum distilled from CaH2, passed through freshly activated alumina under nitrogen, and refluxed over sodium metal under vacuum. Store it over sodium. [Ling & Kevan J Phys Chem 80 592 1976.] Distil it from sodium under vacuum, and store it with sodium-potassium alloy (this treatment removes water and prevents the formation of peroxides). Alternatively, it can be freed from peroxides by treatment with ferrous sulfate and sodium bisulfate, then solid KOH, followed by drying with, and distilling from, sodium, or type 4A molecular sieves under argon. It may be difficult to remove *benzene if it is present as an impurity (can be readily detected by its ultraviolet absorption in the 249-268nm region). [Ichikawa & Yoshida J Phys Chem 88 3199 1984.] It has also been purifed by percolating through Al2O3 and fractionated collecting fraction b 79.5-80o. After degassing, the material is distilled onto degassed molecular sieves, then distilled onto anthracene and a sodium mirror. The solvent is then distilled from the green solution onto potassium mirror or sodium-potassium alloy, from which it is distilled again. [Mohammad & Kosower J Am Chem Soc 93 2713 1971.] It should be stored in the presence of 0.1% of hydroquinone or 2,6-di-tert-butyl –p-cresol as stabiliser. The R(+)-enantiomer has b 78-80o/atm and []D +27.5o (neat), and the S(-)-enantiomer has b 86o/atm and [] D -27.0o (neat) [Iffland & Davis J Org Chem 42 4150 1977, Gagnaire & Butt Bull Soc Chim Fr 312 1961, Beilstein 17 III/IV 60, 17/1 V 78.] HARMFUL VAPOURS.

2-Methyltetrahydrofuran Preparation Products And Raw materials

Preparation Products

Raw materials

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