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Acetonitrile is used mainly as a solvent in the purification of butadiene in refineries. Specifically, acetonitrile is fed into the top of a distillation column filled with hydrocarbons including butadiene, and as the acetonitrile falls down through the column, it absorbs the butadiene which is then sent from the bottom of the tower to a second separating tower.
List of boiling and freezing information of solvents. ... Freezing point (°C) K f (°C⋅kg/mol) Data source; Aniline: ... Water: 100.00 0.512 0.00
This page contains tables of azeotrope data for various binary and ternary mixtures of solvents. The data include the composition of a mixture by weight (in binary azeotropes, when only one fraction is given, it is the fraction of the second component), the boiling point (b.p.) of a component, the boiling point of a mixture, and the specific gravity of the mixture.
Triple point [3] 229.32 K (−43.83 °C), 167 Pa Critical point: 545 K (272 °C), 4.87 MPa Std enthalpy change of fusion, Δ fus H o: 8.167 kJ/mol (crystal I → liq) Std entropy change of fusion, Δ fus S o: 35.61 J/(mol·K) (crystal I → liq) Std enthalpy change of vaporization, Δ vap H o: 33.225 kJ/mol at 25 °C 29.75 at 81.6 °C (BP) Std ...
Boiling point Dielectric constant Density Dipole moment Comment Polar aprotic solvents: acetone: C 3 H 6 O 56.05 °C 21.83 0.7845 g/cm 3: 2.91 reacts with strong acids and bases acetonitrile : CH 3 CN 81.3 - 82.1 °C 38.3 0.776 g/cm 3: 3.20 reacts with strong acids and bases dichloromethane: CH 2 Cl 2: 39.6 °C 9.08 1.3266 g/cm 3: 1.6 low ...
Water expands when it's frozen, which poses a danger to your pipes (which don't fluctuate in size). When temperatures drop below 55 degrees, there's a risk of freezing.
The more salt added, the greater the effect on the freezing point. So, if it is 28 degrees Fahrenheit outside, adding extra salt might not be needed as much as if, say, it was 20 degrees out.
The melting point of water at 1 atmosphere of pressure is very close to 0 °C (32 °F; 273 K), and in the presence of nucleating substances the freezing point of water is close to the melting point, but in the absence of nucleators water can supercool to −40 °C (−40 °F; 233 K) before freezing.