Nitrobenzene hexane

When nitrobenzene alone is used as a solvent (170 C) and with slow cooling, lamellar single crystals are obtained. Their electron diffractograms have an oblique cell (plane group p2). With a mixture of nitrobenzene/decane (65/35) or nitrobenzene/ hexane the dissolution temperature is reduced to about 70 C. 

Figure 5 is related to the latter series of near critical mixtures, namely for = 4, where the crossover from dT jdP <0 to dT jdP>0 on compressing occurs. It was shown that in nitrobenzene - hexane mixture such Tc P) evolution can be portrayed via ... 

Drozd-Rzoska, A., Rzoska, S. J., and Imre, A. R. (2004), Liquid-liquid equilibria in nitrobenzene - hexane mixture under negative pressure. Fluid Phase Equilibria 6, 2291-2294... 

FIGURE 1.236 The size distributions of the nitrobenzene-rich domains after nitrobenzene-hexane phase separation in porous glasses of 7.5 nm, 24 nm, 73 nm and 127 nm average pore size as obtained by H NMR cryoporometry. The dashed lines show the PSDs obtained for the adsorption of pure nitrobenzene. (Adapted from Current Appl. Phys., 4, Valiullin, R., Vargas-Krusa, D., and Furd, L, 370-372, 2004. Copyright 2004,... 

The Class I binary diagram is the simplest case (see Fig. 6a). The P—T diagram consists of a vapor—pressure curve (soHd line) for each pure component, ending at the pure component critical point. The loci of critical points for the binary mixtures (shown by the dashed curve) are continuous from the critical point of component one, C , to the critical point of component two,Cp . Additional binary mixtures that exhibit Class I behavior are CO2—/ -hexane and CO2—benzene. More compHcated behavior exists for other classes, including the appearance of upper critical solution temperature (UCST) lines, two-phase (Hquid—Hquid) immiscihility lines, and even three-phase (Hquid—Hquid—gas) immiscihility lines. More complete discussions are available (1,4,22). Additional simple binary system examples for Class III include CO2—hexadecane and CO2—H2O Class IV, CO2—nitrobenzene Class V, ethane—/ -propanol and Class VI, H2O—/ -butanol. 

Cyclohexanoae is miscible with methanol, ethanol, acetone, benzene, / -hexane, nitrobenzene, diethyl ether, naphtha, xylene, ethylene glycol, isoamyl acetate, diethylamine, and most organic solvents. This ketone dissolves cellulose nitrate, acetate, and ethers, vinyl resias, raw mbber, waxes, fats, shellac, basic dyes, oils, latex, bitumea, kaure, elemi, and many other organic compounds. 

The following is an alternative route 19.4 parts of p-chlorophenyidicyandiamide, 9.4 parts of hexamethylenediamine dihydrochloride and 100 parts of nitrobenzene are stirred together and heated at 150°C to 160°C for 6 hours. The mixture Is cooled, diluted with 200 parts of benzene and filtered. The solid residue is washed with benzene and crystallized from 50% acetic acid. 1,6-di(Ni, Ni -p-chlorophenyldiguanido-Ns,Ns )hexane dihydrochloride Is obtained. 

Evaporate the dried chloroform solution to a residue, add to the residue 400 ml of liquid ammonia, stir and allow the excess ammonia to evaporate, triturate the residue with hexane to form a crystalline solid, continue trituration with water, and filter the solid to yield substantially pure 2-sulfamyl-4-chloro-nitrobenzene. Recrystallize from aqueous methanol. 

All analytical and test samples were recrystd from either acet-n-hexane mixts or acetonitrile and dried in an Abderhalden drying app over refluxing nitrobenzene for at least 4 hours. The product was identified as 2,2,2,f,4,4/,4, 6,6,6w-nonanitroter-phenyl by elemental analysis and X-ray molecular wt detn ... 

ArH Hexane Chloroform Dichloroethane Nitrobenzene 99% aq. acetic acid... 

Although not suitable for the gas phase, it can be conducted in many nonpolar and polar solvents. The rate of this reaction is quite sensitive to the solvent. From the least polar solvent (hexane) to the most (nitrobenzene), the rate constant increases 2700 times. 

Because the transition state is a large aggregate with low charge separation, the rate decreases with increasing 6 of the solvent. The rate of the reaction is almost 100 times as great in hexane ((5 = 14.9 h) as it is in nitrobenzene ((5 = 23.7h). 

Figure 18. Correlations between the solubility of cmchonidme and the reported empirical polarity (A) and dielectric constants (B) of 48 solvents [66]. Those solvents are indicated by the numbers in the figures 1 cyclohexane 2 n-pentane 3 n-hexane 4 triethylamine 5 carbon tetrachloride 6 carbon disulfide 7 toluene 8 benzene 9 ethyl ether 10 trichloroethylene 11 1,4-dioxane 12 chlorobenzene 13 tetrahydrofuran 14 ethyl acetate 15 chloroform 16 cyclohexanone 17 dichloromethane 18 ethyl formate 19 nitrobenzene 20 acetone 21 N,N-drmethyl formamide 22 dimethyl sulfoxide 23 acetonitrile 24 propylene carbonate 25 dioxane (90 wt%)-water 26 2-butanol 27 2-propanol 28 acetone (90 wt%)-water 29 1-butanol 30 dioxane (70 wt%)-water 31 ethyl lactate 32 acetic acid 33 ethanol 34 acetone (70 wt%)-water 35 dioxane (50 wt%)-water 36 N-methylformamide 37 acetone (50 wt%)-water 38 ethanol (50 wt%)-water 39 methanol 40 ethanol (40 wt%-water) 41 formamide 42 dioxane (30 wt%)-water 43 ethanol (30 wt%)-water 44 acetone (30 wt%)-water 45 methanol (50 wt%)-water 46 ethanol (20 wt%)-water 47 ethanol (10 wt%)-water 48 water. [Reproduced by permission of the American Chemical Society from Ma, Z. Zaera, F. J. Phys. Chem. B 2005, 109, 406-414.]...

TNM/fuel mixtures, such as stoichiometric mixts of TNM and hexane, benzene or nitrobenzene, have been used in specialized applications. They are extremely sensitive since several accidents have been reported (Ref 3). 

The deoxygenative ring expansion of nitrobenzene with tri-n-butylphosphine in butanol (77BCJ2013), or with phosphorus trichloride and di-n-butylamine in hexane, followed by catalytic reduction and hydrolysis of the resulting 2-butoxy- or 2-butylamino-3//-azepines have been patented as methods for the production of caprolactam (78JAP(K)78132586, 77GEP2647936 respectively). 

Chemicals which can damage (a) the liver include carbon tetrachloride, paracetamol, bromobenzene, isoniazid, vinyl chloride, ethionine, galactosamine, halothane, dimethyl-nitrosamine (b) the kidney include hexachlorobutadiene, cadmium and mercuric salts, chloroform, ethylene glycol, aminoglycosides, phenacetin (c) the lung include paraquat, ipomeanol, asbestos, monocrotaline, sulfur dioxide, ozone, naphthalene (d) the nervous system include MPTP, hexane, organophosphoms compounds, 6-hydroxydopamine, isoniazid (e) the testes include cadmium, cyclophosphamide, phthalates, ethanemethane sulfonate, 1,3-dinitrobenzene (f) the heart include allylamine, adriamycin, cobalt, hydralazine, carbon disulfide (g) the blood include nitrobenzene, aniline, phenyl-hydrazine, dapsone. 

Maman, A., Compt. rend., 198, 1324 (1934). Nitrobenzene, Benzyl alcohol, Aniline-Hexanes. 

Nitrobenzene (1 mmol) dissolved in minimum amount of dichloromethane, adsorbed over the neutral alumina (substrate alumina=l 2, w/w), dried and mixed with feiTous sulfate (1.2 mmol) and sodium hydrogen phosphite (5 mmol). It was transfered into a test tube and subjected to microwave irradiation (BPL make, BMO 700T, 650 W, power 80%). Reaction was monitored by TLC (hexane-ethyl acetate, 70 30). After completion of the reaction (50 s), it was leached with di-... 

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