Glycol mixtures

CitroneUal can also be converted to the ds- [92471-23-3] (88) and / 3 -/)-menthane-3,8-diol [91739-72-9] (89) by reaction with dilute acids (176,177). The glycol mixture can be readily purified by distillation and the two isomers easily separated. The glycols are usehil as insect repellents (qv) and are especially effective against mosquitos (178). Derivatives of the glycols have been prepared and are usehil as insecticides and plant growth regulators (179). 

Published work relating to bimetallic corrosion in sodium chloride solution is reported in Referencesin sea-water in Refer-ences " in fresh waters in Referencesin mineral acids in References in water/glycol mixtures in Reference ... 

A flow sheet of the process, as given by Ur banski (Ref 75, his Fig 53), is shown below According to Urbanski To start the nitration, current from the switch (18) is applied to the electromagnet (6), which closes the air inlet to the injector. Mixed acid is admitted by opening the valve under the acid rotameter (4). The injector now comes into operation. The manometer (13) must show full vacuum. The needle valve (7) is then opened and the vacuum adjusted to about 300mm Hg. The glycerine-glycol mixture is sucked in thru the rotameter (3) to the injector from (2)... 

V. Kh. Dulaev, N. M. Bondarets, N. A. Polukhina, V. I. Petresku, R. G. Galiev, P. P. Kapustin, and O. S. Matrosov. Composition for preparation of aerated plugging solution—contains Portland cement, oxyethylated monoalkylphenol(s) of propylene trimers, glycol mixture, air, water, etc. Patent SU 1745893-A, 1992. 

The synthetic route followed in the encapsulation of [Ru(bpy)3] + in ZeoliteY is referred as ship-in-a-bottle synthesis due to non-extractability of the [Ru(bpy)3] complex, once encapsulation has taken place within the cages of the zeolite Y. Nanoparticles of TiO was then introduced through TiClj in ethylene glycol mixture under argon, with sintering at 200°C. A schematic diagram of the synthesis is shown in Fig. 16.1 [1]. 

Tse, G., Orbey, H., and Sandler, S.I. Infinite dilution activity coefficients and Henry s law coefficients of some priority water pollutants determined by a relative gas chromatographic method, Environ. Sci Tecbnol, 25(10) 2017-2022, 1992. Tsierkezos, N.G., Kelarakis, A.E., and Palaiologou, M.M. Densities, viscosities, refractive indices, and surface tensions of dimethyl sulfoxide + butyl acetate mixtures at (293.15, 303.15, and 313.15) K, /. Chem. Eng. Data, 45(2) 395-398, 2000. Tsierkezos, N.G. and Molinou, I.E. Densities and viscosities of ethylene glycol mixtures at 293.15 K, /. Chem. Eng. Data, 44(5) 955-958, 1999. 

Fig. 23 a Image of a microfluidic chip used for IFT measurements filled with liquid dye to illuminate channels. To perform the measurement, drops are injected (fluid la and b) are injected into an immiscible stream (2). Additional immiscible matrix is added (3a and 3b) conveying the drops into channel 4 for analysis and measurement. Constrictions in channel 4 accelerate/stretch the drops. Multiple constrictions enable measurement at different interface age. The channel geometry is shown schematically in the inset (from [108]). b Interfacial tension (ct) of water/ethylene glycol mixtures (binary drops) in PDMS oil, as a function of composition ((j)). (Reproduced with permission from [109])... 

Since precipitants used for growth were volatile alcohols (methanol, or methanol/ ethylen glycol mixtures) any handling of the crystals was impossible. Even a minor intervention such as sealing the X-ray capillaries shortened the lifetime of crystals drastically to 6-8 hours (Fig. 3) crystals had to be irradiated immediately in their original growth solution. 

The template polymerization was carried out at GO C in dimethyl sulfoxide/ethylene glycol mixture using AIBN as radical initiator. It was found that under these conditions interaction between adenine and uracil groups is remarkable. 

For flash points below 55 F (13 C) or above 140 F (60 C), use as bath liquid a 1 + 1 mixture of water and ethylene glycol. For flash points between 55F(13C) and 140 F (60 C), either water or water-glycol mixture may be used as bath liquid (Note 4). The temp of the liquid in the bath shall be at least 20 F(ll C) below the expected fl p at the rime of introduction of the sample into the test cup. Do not cool the bath liquid by direct contact with carbon dioxide or "dry ice". Place the test cup in position in the bath... 

Dynamite explosives of novel type ( Nidin ) with nitroglycerine and nitro-glycol mixtures seem to be particularly popular. 

The glycerine or glycerine-glycol mixture (50 50) is pre-heated to 45-50°C before entering the injector. 

There is a wide range of metals used in the construction of closed-loop circuits and the often considerable differences in the nature of the circulating water (ranging from deionized water to glycol mixtures to brine water). As a consequence, it is not possible to devise a single water treatment formulation that satisfies the requirements of all closed-loop circuits and their operators. 

A Julabo circulating cooler was used with an ethanol/ethylene glycol mixture. 

FIGURE 9.3 Effect of dielectric constant of wateethanol-propylene glycol mixtures on the observed rate constant for zileuton. 

Ray, A. and G. Nemethy. 1971. Micelle formation by nonionic detergents in water-ethylene glycol mixtures. 

The reactor to be used is a 4m3 stainless steel stirred tank following DIN-Standards [20]. It is equipped with a indirect heating cooling system using a monofluid (water-diethylene glycole mixture) circulating in a heat exchanger... 

Using water, the heat transfer coefficient on the 50-cm-diameter disc regularly exhibited a minimum value at a radius of about 17 cm. On the other hand, with the use of a water/60% monopropylene glycol mixture, no minimum was observed and the absolute performance was much poorer than that obtained with water. This behavior is attributed to the tangential fluid slip generated as the feed liquid is brought up to the rotor s angular velocity. This slip appears to be more marked with low-viscosity liquids, which seems intuitively reasonable. 

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