Density crystalline solid

Water 70pgL acetone 560gL ethanollSgL toluene400g L n-hexane 14g L n-octanol6.8g Yellow to orange odorless crystalline solid density 1.54gem at 20°C octanol/water partition coefficient (log P)5.45 at 25 °C... 

Colorless crystalline solid density 4.25 g/cm refractive index 2.155 melts at 1,200°C soluble in water (decomposes) insoluble in alcohol. 

White crystalline solid density 2.35 g/cm decomposes when heated to 100°C soluble in water and alcohol (with decomposition). 

The nonacarbonyl is an orange-yeUow crystalline solid at ambient temperatures density 2.85 g/cm decomposes at 100°C. Iron dodecacarbonyl is a black crystalline solid density 2.0g/cm3 decomposes at 140°C. Iron hydrocarbonyl is an unstable colorless liquid solidifies at -70°C decomposes on heating insoluble in water, soluble in alkalis. 

The anhydrous salt is a yellow cubic crystalline solid density 3.68 g/cm decomposes at 848°C readily dissolves in water insoluble in ethanol, ether and acetone. 

Brown-red crystalline solid density 4.303g/cm3 decomposes at 370°C readily dissolves in water dissolves in hydrochloric acid forming chloropla-tinic acid, H2PtCl6 soluble in acetone slightly soluble in ethanol insoluble in ether. 

Colorless or white crystalline solid density 1.36 g/cm decomposes at 270°C soluble in water, 58 g/100 g solution moderately soluble in alcohol. 

Anhydrous salt is a colorless crystalline solid density 1.528 g/cm melts at 324°C very soluble in water moderately soluble in ethanol. 

The dihydrate is a white crystalline solid density 2.18 g/cm decomposes at 36°C soluble in water sparingly soluble in methanol. 

The heptahydrate is a powdered or granular crystalline solid density 1.679 g/cm3 loses five molecules of water at 48°C. 

Sodium pentahydrate is a colorless, odorless, crystalline solid density 1.69 g/cm3 decomposes around 50°C effloresces in dry air above 33°C very soluble in water and oil of turpentine insoluble in ethanol. 

White crystalline solid density 2.65 g/cm decomposes at 170°C without melting sublimes vapor pressure 0.1 torr at 20°C insoluble in water soluble... 

Titanium Trifluoride. The trifluoride (121) is a blue crystalline solid, density 2980 kg/m3, in which the titanium atoms are six-coordinate at the center of a slightly distorted octahedron, where the mean Ti—F distance is 197 pm. Titanium trifluoride [13470-08-1] is stable in air at room temperature but decomposes to titanium dioxide when heated to 100°C. It is insoluble in water, dilute acid, and alkalies but decomposes in hot concentrated acids. The compound sublimes under vacuum at ca 900°C but disproportionates to titanium and titanium tetrafluori.de [7783-63-3] at higher temperatures. 

Titanium Dlbromide, Titanium dibromide [13873-04-5], a black crystalline solid, density 4310 kg/m3, mp 1025°C, has a cadmium iodide-type structure and is readily oxidized to trivalent titanium by water. Spontaneously flammable in air (142), it can be prepared by direct synthesis from the elements, by reaction of the tetrabromide with titanium, or by thermal decomposition of titanium tribromide. This last reaction must be carried out either at or below 400°C, because at higher temperatures the dibromide itself disproportionates. 

Materials Ethirimol, a fungicide manufactured by ICI, was a white crystalline solid (density = 1.21 g cm ) which was used as received. 

White crystalline solid density 1.187 g/cm mp 172-176 C (341-348°F) vapor pressure 3 X 10 torr at 20°C (68°F) very slightly soluble in water [70 mg/L at 25°C (77°F)] moderately soluble in ether and methanol readily dissolves in chloroform and dimethylsulfoxide. 

ENTA is described as being a yellow or white [12] or colorless [13] crystalline solid. Density of ENTA is 1.83 g cm [12] and melting point 144-145 °C [12,13], DAHA forms as a white crystalline material with melting point 72-74 °C [14]. 

Titanium trifluoride [13470-08-17, TiF, is a blue crystalline solid that undergoes oxidation to Ti02 upon heating in air at 100°C (see Titanium compounds). In the absence of air, disproportionation occurs above 950°C to give TiF and titanium metal. TiF decomposes at 1200°C, has a density of 2.98 g/cm, and is insoluble in water but soluble in acids and alkafles. The magnetic moment is 16.2 x 10 J/T (1.75 -lB). 

The prime function of the saturated acid is to space out the double bonds and thus reduce the density of cross-linking. Phthalic anhydride is most commonly used for this purpose because it provides an inflexible link and maintains the rigidity in the cured resin. It has been used in increasing proportions during the past decade since its low price enables cheaper resins to be made. The most detrimental effect of this is to reduce the heat resistance of the laminates but this is frequently unimportant. It is usually produced by catalytic oxidation of o-xylene but sometimes naphthalene and is a crystalline solid melting at 131°C. 

The present chapter is organized as follows. We focus first on a simple model of a nonuniform associating fluid with spherically symmetric associative forces between species. This model serves us to demonstrate the application of so-called first-order (singlet) and second-order (pair) integral equations for the density profile. Some examples of the solution of these equations for associating fluids in contact with structureless and crystalline solid surfaces are presented. Then we discuss one version of the density functional theory for a model of associating hard spheres. All aforementioned issues are discussed in Sec. II. 

Density functional theory was originally developed by solid-state physicists for treating crystalline solids and almost all applications were in that field until the mid-1980s. It is a current hot topic in chemistry, with many papers appearing in the primary journals. 

Nitro compounds, when liquid, have characteristic odoms, are insoluble in water, highly refractive and with a density greater than unity. Many are crystalline solids. Most nitro compounds are slightly coloured, generally yellow the intensity of the colour increases with the number of nitro groups. The following reactions will assist in their detection. 

The principal experimental method used to measure the density of a solid is determination of the mass of liquid displaced by a known mass of solid. It is essential that the solid have no appreciable solubility in the liquid, that all occluded air be removed from the solid and that the density of the displacement fluid be less than that of the solid lest the solid float. Densities of crystalline solids also can be determined from the dimensions of the unit cell. Davis and Koch discuss other methods for measuring the density of liquids and solids such as hydrostatic weighing of a buoy and flotation methods. 

Lead azide is manufactured by reaction of sodium azide with either lead nitrate or lead acetate. It is a white crystalline solid, insoluble in cold water and stable on storage. It is very sensitive to friction and impact and has a velocity of detonation, when pressed to a density of 3-8, of4500 ms 1. 

In contrast to crystalline solids characterized by translational symmetry, the vibrational properties of liquid or amorphous materials are not easily described. There is no firm theoretical interpretation of the heat capacity of liquids and glasses since these non-crystalline states lack a periodic lattice. While this lack of long-range order distinguishes liquids from solids, short-range order, on the other hand, distinguishes a liquid from a gas. Overall, the vibrational density of state of a liquid or a glass is more diffuse, but is still expected to show the main characteristics of the vibrational density of states of a crystalline compound. 

Low-density polyethylene exists as a partially crystalline solid, Melting point 115°C. Its density has been found to range between 0.91-0.94. It is practically insoluble in any solvent at room temperature but is soluble in many solvents at temperature above 100°C. Some of the useful solvents for it are CC14. 

Here T0 is a reference temperature and if this is 273K the coefficient A] 103. The temperature may then be lowered until the melting point, Tm, is reached. At this point a crystalline solid is formed, the density of which will usually be within 10% of the liquid. The density can be described by a similar equation to Equation (3.28) but the coefficient is quite different, i.e. As 1015 The origin of the thermal expansion in a... 

As discussed above, many polymers contain some crystalline structures when they are solidified. These polymers are referred to as semicrystalline resins. These crystalline structures can be observed using microscopy as shown in Fig. 2.12 for PP and sPS resins. As shown schematically in Fig. 2.13 and discussed above, not all portions of the polymer chains are incorporated into the crystalline structure. Instead, the portions of the chains that are not crystallized make up the amorphous phase. Solid density is the most commonly used method for measuring the... 

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