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Butyl Diglyme
Diethylene Glycol Dibutyl Ether CH3(CH2)3-O-(CH2CH2-O)2-(CH2)3CH3
A polar aprotic glycol diether with active solvency and formulating versatility Butyldiglyme has become a favorite reagent for Grignard reactions. The high boiling point increases safety while making the Grignard formation easy to start, and often increasing yield. The very low water solubility allows provides the ability remove impurities from organics by water extraction. Used as a solvent for organometallic reactions involving reductions, alkylations and in reactions involving alkali metals.
Physical Properties
| Empirical Formula |
C12H26O3 |
| Molecular Weight |
218.34 |
| Boiling Point (°C 760 mm Hg) |
256 |
| Freezing Point (°C) |
-60.2 |
| Specific Gravity (20°C) |
0.8814 |
| Vapor Pressure (mm Hg/20°C) |
<0.01 |
| Volatility (n-butylacetate = 100) |
<0.1 |
| Viscosity (cp 20°C) |
2.4 |
| Surface Tension (dynes/cm 20°C) |
27.0 |
| Specific Heat (cal/gram/°C) |
0.495 |
| Auto Ignition temp (°C) |
190 |
| Heat of Vaporization (K Cal/mole) |
12.0 |
| Heat of Combustion (K Cal/mole) |
1823 |
| Heat of Formation (K Cal/mole) |
175 |
| Flash Point (°C, closed cup) |
118 |
| Refractive Index (20°C) |
1.4235 |
Appearance: Clear, Colorless
Odor: Mild, Non-residual
Solubility at 25°C
- In water: 0.3%
- Water in: 1.4%
Reaction solvent
- For Grignard reactions
- For enhancing rates of nucleophilic substitution
- Enhances yield and selectivity for NaBH4 reductions
- Extraction of organics from water
- Extract impurities from organic in butyl diglyme with water - then drain off water layer with contaminants
Features
- Aprotic
- High boiling point
- Water insoluble
- High solvency characteristics
- Powerful diluent & cleaner
- Excellent thermal and chemical stability
Gold Recovery
- Will extract Au(III) from aqua regia
- Allows gold recovery from alloys, mining residuals, or from electrode slime