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Pentane-2,4-dione (keto form) Other names ... temperature. 340 °C (644 °F; 613 K) ... In some cases the chelate effect is so strong that no added base is needed to ...
Pentanedione may refer to: Acetylacetone (2,4-pentanedione) Acetylpropionyl (2,3-pentanedione) See also. C 5 H 8 O 2; Cyclopentanedione
Understanding the temperature dependence of viscosity is important for many applications, for instance engineering lubricants that perform well under varying temperature conditions (such as in a car engine), since the performance of a lubricant depends in part on its viscosity.
2-Methyl-2,4-pentanediol (MPD) is an organic compound with the formula (CH 3) 2 C(OH)CH 2 CH(OH)CH 3. This colourless liquid is a chiral diol . It is produced industrially from diacetone alcohol by hydrogenation . [ 4 ]
Temperature-dependency of the heats of vaporization for water, methanol, benzene, and acetone. In thermodynamics, the enthalpy of vaporization (symbol ∆H vap), also known as the (latent) heat of vaporization or heat of evaporation, is the amount of energy that must be added to a liquid substance to transform a quantity of that substance into a gas.
With 2,4-pentanedione, it condenses to give the 3,5-dimethylpyrazole. [63] In the Einhorn-Brunner reaction hydrazines react with imides to give triazoles. Being a good nucleophile, N 2 H 4 can attack sulfonyl halides and acyl halides. [64] The tosylhydrazine also forms hydrazones upon treatment with carbonyls.
Isotherms of an ideal gas for different temperatures. The curved lines are rectangular hyperbolae of the form y = a/x. They represent the relationship between pressure (on the vertical axis) and volume (on the horizontal axis) for an ideal gas at different temperatures: lines that are farther away from the origin (that is, lines that are nearer to the top right-hand corner of the diagram ...
Most scientists measure temperature using the Celsius scale and thermodynamic temperature using the Kelvin scale, which is the Celsius scale offset so that its null point is 0 K = −273.15 °C, or absolute zero. Many engineering fields in the US, notably high-tech and US federal specifications (civil and military), also use the Kelvin and ...