Melting point vapor pressure

Empirical formula Molar mass Melting point Vapor pressure Solubility... 

Empirical formula Molecular weight Melting point Vapor pressure Water solubility Stability Use pattern Regulatory position... 

By irradiation with light or by heating it to temperatures above 180 °C, white phosphorus is transformed to red phosphorus. Its tint, melting point, vapor pressure and especially its density depend on the conditions of preparation. Usually, it is amorphous or microcrystalline, and it is rather laborious to grow crystals. 

Physical/Chemical Properties Normal physical state Molecular weight Density/specific gravity Solubility Boiling point Melting point Vapor pressure/density... 

Bluish-black orthorhombic crystals refractive index 3.34 density of solid 4.933 g/cm3 at 20°C density of the element in liquid form at 120°C 3.96 g/cm melts at 113.6°C to a black mobile liquid the solid can be sublimed to vapor below its melting point vapor pressure of solid at 25°C 0.3075 torr vapor pressure at 113.6°C 90.5 torr the liquid boils at 184.3°C giving violet vapors vapor density 6.75 g/L critical temperature 545.8°C critical pressure 48.9 atm critical volume 155 cm /mol dielectric constant of solid 10.3 at 23°C and... 

The physical properties of a substance are dependent on the nature of the atoms found in it and the type of bonds between them. The size and shape of the molecules from which a substance is composed determine the aggregate state and all related specific properties like melting point, vapor pressure, density, viscosity and solubility in various media. This also includes the number value of the partition coefficient. Funda-... 

Symmetry is an important but often elusive molecular property when numerical values are to be assigned. However, symmetry plays an important role in the quantum-mechanical interpretation of atomic and molecular states, NMR spectrum, and several physico-chemical properties. Symmetry is closely related to those molecular properties that also depend on entropy contributions, such as melting points, vapor pressure, surface tension, and dipole moment. Moreover, the nature of overall molecular shape depends on molecular symmetry. 

The principal halides of zirconium are listed in Table 7.6, together with the melting points, vapor-pressure equations, and temperatures at which the vapor pressure of each equals 760 Ton. The tetrahalides sublime without melting at atmospheric pressure, like UF . The lower halides disproportionate before melting. 

Melting point Vapor pressure at 25 °C Boiling point Heat of vaporization Heat of sublimation Specific gravity at 65 °C (liquid TXN)... 

The presence of strong dipoles and a large overall dipole moment makes water a very polar substance. Properties of water that are dependent on its dipole moment include its freezing point, melting point, vapor pressure, and ability to dissolve many substances. 

Physical state Molecular weight Solubility Melting point Vapor pressure Density pKa 1, 2, 3 Chelation... 

Code numbers Melting point Vapor pressure... 

Compound Melting point Vapor pressure Log Pow Solubility in water DT5O... 

In many cases, direct reaction of the elements is not always feasible, especially when the physical characteristics for the constituents (melting point, vapor pressure, diffusion coefficients, etc.) or kinetics of the reaction are unfavorable, or if the target product is thermodynamically metastable (in such cases, other synthetic routes discussed elsewhere in this chapter may be more effective). Nevertheless, direct reaction of the elements or preformed preciu-sors has to date been the most commonly used approach to prepare intermetallic clathrates, producing the largest variety of compositions synthesized to date (cf. Table 3.1 for representative reactions). 

Chemical Formula CAS number Molecular Weight Boiling point Melting point Vapor pressure (21°C)... 

Melting point Vapor pressure (20°C) Absolute density (25°C, 1 atm) Relative density (25°C, 1 atm) Critical temperature Critical pressure Critical volume Critical density Critical compressibihty factor... 

Chemical Name Synoityms Chemical Fonnula CAS number Molecular Weight Boiling point Melting point Vapor pressure (20°C) Solubility in water DOT classification DOT label UN Number CGA Connection Exposure limits Target effects... 

---