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Topic: Miscibility

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	Nu-Calgon Wholesaler Inc. : Tech. Questions
		Miscibility is the ability of two substances to mix together.
		When using the term in discussing refrigerants and oils, it refers to the ability of the gas and the oil to remain as one mixture, one homogeneous mixture, as they travel through the system, from the compressor and back to the compressor.
		Proper heat transfer and efficient system operation require an oil and a gas that exhibit good miscibility, particularly in the evaporator where temperatures are lower.
	www.nucalgon.com /nucalgon/TechQues.nsf/4a8da0c4b917bd3186256b59004d44a4/5db6ae53e083e1ac86256b59005517fa?OpenDocument (134 words)

	Method of forming carbon dioxide mixtures miscible with formation crude oils - Patent 4529037
		This sort of miscible flooding is termed "developed miscibility," or "multiple-contact miscibility," wherein it is thought that the intermediates (C.sub.2 -C.sub.6) of crude oil transfer into the crude oil displacing fluid over a sustained period of exposure, as opposed to "first-contact miscibility," wherein a zone of contiguously miscible fluids will result.
		The minimum pressure at which carbon dioxide is miscible with crude oil from a reservoir is determined at the ambient reservoir temperature and is referred to as the minimum miscibility pressure (MMP).
		The miscibility of the carbon dioxide with the crude oil is adjusted by addition of hydrocarbons to develop miscibility, carbon dioxide via line 12 is mixed with crude oil introduced via line 14 into a mixing conduit 16.
	www.freepatentsonline.com /4529037.html (1704 words)

	[No title]
		Miscibility is defined as the ability of two liquids to mix together to form a single liquid phase.
		Miscibility is a function of temperature and concentration.
		Miscibility characteristics of the same ISO grade with low temperature HFC refrigerants can range from immiscible with one manufacturer to completely miscible with the other.
	www.bvaoils.com /vlt.htm (598 words)

	Miscible - Wikipedia, the free encyclopedia
		The chemistry term miscible refers to the property of various substances, particularly liquids, that allows them to be mixed together and form a single homogeneous phase.
		For example, in the alcohols, ethanol has two carbon atoms and is miscible with water, whereas octanol has eight carbon atoms and is not miscible with water.
		Miscibility is partly a function of entropy, and so is seen more commonly in states of matter that are more entropic.
	en.wikipedia.org /wiki/Miscibility (404 words)

	Accelrys > Case Studies > Will My Polymers Mix?
		A number of different modeling techniques are available for studying polymer miscibility, ranging from quantitative structure property relationship methods and simple lattice based models, through atomistic modeling, to state-of-the-art statistical mechanics approaches.
		The miscibility of two polymers is determined by the free energy of mixing which includes both entropic and enthalpic terms.
		Systems in region1 are miscible; systems in region2, between the binodal and spinodal curves, are metastable and are predicted to phase separate by a process of nucleation and growth; systems in region 3 will spontaneously phase separate.
	www.accelrys.com /reference/cases/misc/misc.html (4337 words)

	Molecular Factors Affecting the Miscibility Behavior of Cycloolefin Copolymers (Site not responding. Last check: 2007-10-26)
		The mutual miscibility diagram is determined for binary blends of two ethylene/norbornene random copolymers, and their monomer sequence distribution is investigated by
		The miscibility changes abruptly at a norbornene content of 50% where NMR measurements indicate a change in microstructure.
		The computations indicate that the chain stiffness (arising from the rigidity and steric interactions of the norbornene units) exerts significant influence on the miscibility of these blends.
	pubs.acs.org /cgi-bin/abstract.cgi/mamobx/1999/32/i23/abs/ma990580o.html (175 words)

	Miscibility \| World of Chemistry
		Miscibility refers to the ability of a gas or liquid to dissolve uniformly in another gas or liquid.
		Ethanol, an alcohol, and water are miscible because they are chemically similar, but benzene and water are only slightly miscible because of the very large differences in their chemical properties.
		The miscibility of gases in liquids almost always decreases with increasing temperature, and increases with increasing pressure.
	www.bookrags.com /sciences/chemistry/miscibility-woc.html (530 words)

	Completed Research (Site not responding. Last check: 2007-10-26)
		A thermodynamic correlation for the minimum miscibility pressure of carbon dioxide flooding is introduced in which the minimum miscibility pressure is estimated as the cricondenbar of a pseudo-binary system at reservoir temperature.
		Very good agreement of ± 3% is obtained between the minimum miscibility pressures and cricondenbars when CO impurities of 5% methane, 10% methane and 5% nitrogen are introduced.
		When tested against 157 minimum miscibility pressure values for systems containing crude oil, the ratio of the predicted MMP to the actual MMP is 1.09, with a standard deviation of 19%.
	www.pitt.edu /~rapel/completed4.htm (335 words)

	RRI Digital Repository: Item 2289/929
		The total miscibility method is applied to study the recently discovered mesophases of disc-like molecules, benzene-hexa-n-alkanoates.
		The virtual mesophase-isotropic transition temperature for the hexa- noate compound derived from the miscibility diagram is in excellent accord with that obtained from the previously reported pressure-temperature phase diagram.
		Total miscibility in the mesomorphic state is not observed for two members of different discogenic series, but the existence of different mesophase types is not proved.
	dspace.rri.res.in:8080 /dspace/handle/2289/929 (177 words)

	Method of producing plastic sheet with porous surface - Patent 4849457
		Preferably, two or more kinds of plastics having low levels of miscibility to each other include mainly a material A which is vinyl chloride or its compolymer and a material B which is acrylonitrile or its copolymer.
		The method of producing a plastic sheet according to claim 1, wherein said two or more kinds of plastics having low levels of miscibility to each other include mainly a material A which is cellulose acetate and a material B which is acrylonitrile-styrene copolymer.
		The method of producing a plastic sheet acording to claim 1, wherein said two or more kinds of plastics having low levels of miscibility to each other include mainly a material A which is vinyl chloride-vinyl acetate copolymer and a material B which is acrylonitrile-methyl acrylate copolymer.
	www.freepatentsonline.com /4849457.html (2636 words)

	Solubility Prediction in Octanol: A Technical Note
		Since the molarity of pure dry octanol is 6.33 mol/L, a mole-fraction solubility of 0.50 corresponds to a molar solubility of 3.17 mol/L. Coincidentally, the logarithm of 3.17 is 0.50.
		The miscibility of 32 common organic liquids with octanol was determined by mixing equal volumes and visually evaluating for phase separation over a 3-day period.
		Regression analysis was based on 149 solubilities, corresponding to 123 reported solubilities and 26 miscible liquid solutes from Table 2 that lie in the theoretical range of complete miscibility.
	www.aapspharmscitech.org /view.asp?art=pt070126 (2070 words)

	Miscibility and Immiscibility of Liquids
		I am aware and have been taught about polar and nonpolar bonds and the general consensus that like dissolve like and the whole intermolecular forces scene.
		Regards, ProfHoff 661 ===================================================== Well, obviously you have noted that solubility and miscibility is a rather complicated phenomenon.
		You are correct in thinking that all spontaneous processes require an overall entropy increase.
	www.newton.dep.anl.gov /askasci/chem03/chem03036.htm (733 words)

	ME 481/581 Homework Five (Site not responding. Last check: 2007-10-26)
		Note that in comparing the calculated chemical spinodal with the phase diagram that the spinodal is inside the boundary of the miscibility gap as we would expect.
		The easiest way to solve this is to calculate the free energy of the two phases (solid and liquid) as a function of Pd composition for a variety of different temperatures, find the common tangent to the free energy curves, and plot the compositions by hand.
		Miscibility gap and melting temps look okay, but it's not physical that there should be a crossing of the liquidus/solidus regions and the miscibility gap.
	oregonstate.edu /instruct/me481/Homework/F05/ME481Hmwk5.html (1367 words)

	Effect of pressure on liquid-liquid miscibility gaps: A case study of the systems CaO-SiO2, MgO-SiO2, and CaMgSi2O6-SiO2
		miscibility gap becomes metastable is estimated to be 1.81 GPa.
		The thermal and compositional extents of miscibility gaps associated with network-modifier cations (such as Ca) do not change significantly with increasing pressure, but the extents are increased for amphoteric cations (such as Mg), and the change is more pronounced if the latter have small ionic radii and high ionic potentials.
		Cations possessing high crystal field stabilization energies produce the largest immiscibility fields at atmospheric pressure, and the passage from the high-spin to the low-spin state with increasing pressure is expected to yield even larger miscibility gaps.
	www.agu.org /pubs/crossref/2004/2003JB002659.shtml (336 words)

	Friday, June 29, 2001 (Site not responding. Last check: 2007-10-26)
		The miscibility of synthetic and natural lipids with other lipids, with water, and with biomolecules (proteins, nucleic acids, carbohydrates, etc.) and non-biological materials (drugs, anesthetics, organic solvents, etc.) is within the purview of the Index.
		The Index is based on the LIPIDAG database (http://www.lipidat.chemistry.ohio-state.edu/lipidag/), LIPIDAG is a web-based relational database of lipid miscibility data.
		These are considered of relevance to the general area of lipid miscibility and have been included in the Index.
	www.lipidat.chemistry.ohio-state.edu /Index_web/PD_Index.htm (3400 words)

	Example 10.--Aragonite-Strontianite Solid Solution
		The excess free-energy parameters describe a nonideal solid solution that has a miscibility gap.
		For compositions that fall within the miscibility gap, the activities of calcium and strontium within the aqueous phase remain fixed and are in equilibrium with solids of two compositions, one solid with a strontium mole fraction of 0.0048 and one solid with a strontium mole fraction of 0.8579.
		Finally, the end of the miscibility gap is reached after about 0.005 mol of strontium carbonate have been added.
	wwwbrr.cr.usgs.gov /projects/GWC_coupled/phreeqc/html/final-79.html (745 words)

	(OAIC) MISCIBILITY OF LUBRICANTS WITH REFRIGERANTS. (Site not responding. Last check: 2007-10-26)
		Miscibility data is being obtained for a variety of non-CFC refrigerants and their potential lubricants under a program initiated and supported by the Air-Conditioning and Refrigeration Technology Institute.
		Experiments are being performed in two phases: Phase I focuses on performing screening tests and Phase II consists of developing miscibility plots.
		The miscibility tests are being performed in a test facility consisting of a series of miniature test cells submerged in a constant temperature bath.
	es.epa.gov /p2pubs/oaic/410.html (244 words)

	Separation of Liquid Phases in Giant Vesicles of Ternary Mixtures of Phospholipids and Cholesterol -- Veatch and Keller ...
		FIGURE 1 (a) Plot of miscibility transition temperature versus main chain transition temperature of the saturated component for various ternary mixtures shown in Table 1.
		Miscibility transition temperatures are from 1:1:1 mixtures with the exception of POPC/DAPC/Chol, which was from a 2:2:1 ratio.
		Viscous fingering at the liquid/liquid interface between two coexisting phases of mixtures with a miscibility gap.
	www.biophysj.org /cgi/content/full/85/5/3074 (5748 words)

	General Chemistry Online: FAQ: Liquids: What are miscible, immiscible, and partially miscible liquids?
		No meniscus forms between the alcohol and the water, and the two liquids are considered "miscible".
		Nearly any pair of liquids are miscible if only a trace amount of one of the liquids is present.
		Two liquids are "partially miscible" if shaking equal volumes of the liquids together results in a meniscus visible between two layers of liquid, but the volumes of the layers are not identical to the volumes of the liquids originally mixed.
	antoine.frostburg.edu /chem/senese/101/liquids/faq/miscible-immiscible.shtml (284 words)

	Miscibility of Ternary Mixtures of Phospholipids and Cholesterol in Monolayers, and Application to Bilayer Systems -- ...
		Miscibility of Ternary Mixtures of Phospholipids and Cholesterol in Monolayers, and Application to Bilayer Systems -- Stottrup et al.
		in miscibility phase behavior of monolayers and bilayers for
		rapidly and miscibility transition pressures to increase rapidly.
	www.biophysj.org /cgi/content/abstract/88/1/269 (378 words)

	The use of miscibility gaps to produce high-temperature high-strength materials (Site not responding. Last check: 2007-10-26)
		The aim of this programme is to address the problem of interdiffusion by using multilayers, the components of which have a miscibility gap between their constituent alloys.
		As the size of the miscibility gap is a function of temperature we should initially be able to plot the position of the miscibility gap, on the line joining these two compositions, as a function of temperature.
		We have used this technique to look at the interdiffusion of heterostructures in the InGaAsP system [4,5] where there is no miscibility gap and we have found that the diffusion is Fickian with a diffusion coefficient which is independent of the concentration of the diffusing species [4,5].
	mmpwww.ph.qmul.ac.uk /miscgap.html (1390 words)

	Miscibility (Site not responding. Last check: 2007-10-26)
		Miscibility is the common solubilities of the components in liquid-liquid systems.
		Complete miscibility is when the substances mix in all proportions.
		Partial miscibility is when the substances only mix partially.
	www.utmem.edu /physpharm/.021e1.html (106 words)

	Miscibility of human semisynthetic regular and lente insulin and human biosynthetic regular and NPH insulin -- Olsson ...
		Miscibility of human semisynthetic regular and lente insulin and human biosynthetic regular and NPH insulin -- Olsson et al.
		Miscibility of human semisynthetic regular and lente insulin and human biosynthetic regular and NPH insulin
		The miscibility of human semisynthetic regular and lente insulins (Actrapid
	care.diabetesjournals.org /cgi/content/abstract/10/4/473 (255 words)

	April Fools: Potion Miscibility
		Way back in 1st edition Dungeons and Dragons, there was a concept called Potion Miscibility, which addressed what happened when you drank a second (or more) magic potion while the effect of a first was still active.
		In Design and Development's Why We Aren't Funny, the authors mentioned potion miscibility as part of their discussion of previous editions' humor.
		However, the Potion Miscibility rules from the older editions were still great fun, and no doubt contributed to some memorable events in characters' lives (or the end thereof).
	www.wizards.com /default.asp?x=dnd/dnd/20060401b (3032 words)

	ASTM D1722-98(2004) Standard Test Method for Water Miscibility of Water-Soluble Solvents
		ASTM D1722-98(2004) Standard Test Method for Water Miscibility of Water-Soluble Solvents
		1.1 This test method covers the determination of the miscibility of water-soluble solvents with water.
		While written specifically for testing acetone, isopropyl alcohol (isopropanol), and methyl alcohol (methanol), the method is suitable for testing most water-soluble solvents.
	www.astm.org /DATABASE.CART/REDLINE_PAGES/D1722.htm (250 words)

	HPLC - Miscibility of solvents
		There are several "universal" HPLC solvents such as tetrahydrofuran and acetonitrile, which are miscible with almost all others except hexane and pentane.
		By far the most useful "rinsing, or cleanout" solvent is iso-propanol, which is miscible with all others at all concentration levels.
		For a legend of HPLC solvent-numbers that can be moved around your screen, move your mouse over here.
	home.planet.nl /~skok/techniques/hplc/miscibility.html (97 words)

	The miscibility gap of Inx Ga1-x Sby As1-y alloys
		The miscibility gap of Inx Ga1-x Sby As1-y alloys
		The miscibility gap is described in terms of the minimum condition for the free energy of the two-phase decomposed alloy.
		Interactions between the nearest and next nearest atoms as well as the oscillation motion of atoms are taken into account.
	stacks.iop.org /0953-8984/16/S2211 (253 words)

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