N-Propyl carbonate

Note how the isopropyl group has priority over n-propyl At the first point of difference (arrows), the isopropyl carbon is connected to C,C,H whereas the n-propyl carbon is connected to C,H,H. The boldface atoms (second C for isopropyl vs. first H for n-propyl) set the priority. 

Dipropylamine, 3,3 -diamino. See Dipropylenetriamine 4-(Dipropylamino)-3,5-dinitro benzene-sulfonamide. See Oryzalin Dipropylcarbamothioic acid, S-ethyl ester. See Ethyl dipropylthiocarbamate Di-n-propyl carbonate CAS 623-96-1... 

Diphenyl oxide Dipropylamine Di-n-propyl carbonate Dipropylene glycol phenyl ether 1,2-Dodecane carbonate n-Dodecane Dodecylhexadecanol Edetic acid Eicosane Ethanolamine (2-Ethoxymethylethoxy) propanol 3-Ethoxy-1-propanol Ethylacetoacetate Ethylamine ... 

Note 1,2-BC 1,2-dunethylethylene carbonate 1,3-DOL 1 -dioxolane AC acetonitrile A.N. acceptor number BC butylene carbonate BEC butyl ethyl carbonate BMC butyl methyl carbonate CF3-EC trifluoromethyl ethylene carbonate QEC chloroethylene carbonate DBC dibutyl carbonate DEC diethyl carbonate DEE 1,2-diethoxyethane DGM diethyleneglycol dimethyl ether DIPC di-isopropyl carbonate DMC dimethyl carbonate DME 1,2-dimethoxyethane DMSO dimethyl sulfoxide D.N. donor number DPC di-n-propyl carbonate EC ethylene carbonate EIPC ethyl isopropyl carbonate EMC ethyl methyl carbonate EPC ethyl propyl carbonate MeTHF 2-methyl tetrahydrofuran MIPC methyl isopropyl carbonate MFC methyl propyl carbonate PC propylene carbonate TEGM tetraethylene glycol dimethyl ether TGM triethylene glycol dimethyl ether TFIF tetrahydrofuran. 

The lifetime of di-n-propoxymethane in the lower atmosphere will be controlled by its reaction with OH. For daytime [OH] 2.5 x 10 molecule cm", the lifetime is about 4 h. Possible end products include di-n-propyl carbonate, following OH attack at the central CH2 group, or CH3CH2CH20CH20CH=0 and acetaldehyde, following OH attack at the two equivalent CH2 groups adjacent to the ether site. 

The student will doubtless be aware of the fact that methyl, ethyl, n-propyl and iso propyl alcohols are completely miscible with water. The solubilities of the higher aloohols decrease progressively as the carbon content increases. The solubilities of all types of alcohols with five carbon atoms or more are quite small. For the isomeric butyl alcohols the solubilities (g. per 100 g. of water at 20°) are n-butyl, 8 iso-butyl, 23 scc.-butyl, 13 ierl.-butyl, completely miscible. 

Successful results have been obtained (Renfrew and Chaney, 1946) with ethyl formate methyl, ethyl, n-propyl, iso-propyl, n-butyl, iso-butyl, sec.-butyl and iso-amyl acetat ethyleneglycol diacetate ethyl monochloro- and trichloro-acetates methyl, n-propyl, n-octyl and n-dodecyl propionates ethyl butyrate n-butyl and n-amyl valerates ethyl laurate ethyl lactate ethyl acetoacetate diethyl carbonate dimethyl and diethyl oxalates diethyl malonate diethyl adipate di-n-butyl tartrate ethyl phenylacetate methyl and ethyl benzoates methyl and ethyl salicylates diethyl and di-n-butyl phthalates. The method fails for vinyl acetate, ieri.-butyl acetate, n-octadecyl propionate, ethyl and >i-butyl stearate, phenyl, benzyl- and guaicol-acetate, methyl and ethyl cinnamate, diethyl sulphate and ethyl p-aminobenzoate. 

The experimental details for mono-M-propylanillne are as follows. Reflux a mixture of 230 g. of aniline and 123 g. of n-propyl bromide for 8-10 hours. Allow to cool, render the mixture alkafine, and add a solution of 150 g. of zinc chloride in 150 g. of water. Cool the mixture and stir after 12 hours, filter at the pump and drain well. Extract the thick paste several times with boiling light petroleum, b.p. 60-80° (it is best to use a Soxhlet apparatus), wash the combined extracts successively with water and dilute ammonia solution, and then dry over anhydrous potassium carbonate or anhydrous magnesium sulphate. Remove the solvent on a water bath, and distil the residue from a Claisen flask with fractionating side arm (well lagged). Collect the n-propyl-aniline at 218-220° the yield is 80 g. Treat the pasty solid zincichloride with an excess of. sodium hydroxide solution and steam distil 130 g. of pure aniline are recovered. 

CARBONIC ANDCARBONOCm ORIDICESTERS] (Vol5) n-Propyl chlorosulfate [819-52-3]... 

Amnioniii Benzene Acetic, ncid Carbon monoxide Methane (lire damp) Iso-amyl acetate Butane n-Bulyl alcohol n-Propyl alcohol Butanol Methanol n-Hexane Turpentine Mineral oils Cycio hexene ... 

There are two possible structures (isomers) of three carbon atom alcohol. C is n-propyl alcohol (or 1-propanol), the other is isopropyl alcohol (or 2-propanol). The former, no.. ..mufaetured in large quantities is used in printing inks. The latter is manufactured in millions of tons to make propylene by a process similar to that used to convert ethylene to ethanol. The manutaclure of 2-propanol by this process initiated the petrochemical industry in the 1920s. 

It forms azeotropic mixts with methylol, carbon disulfide, isopentane, isopropyl halides, isoprene, etc. Prepn is by treating isopropyl ale with nitrosyl chloride. Also, by passing N02 into isopropyl ale at 25—30°. Coml prepn is similar to that of n-propyl nitrite (above). The nitrite has a flash p of < 10°... 

Comparing equations 13.8 and 13.9, it is seen that the adiabatic saturation temperature i > equal to the wet-bulb temperature when s = h/hDpA. This is the case for most water vapour systems and accurately so when Jf = 0.047. The ratio (h/hopAs) = b is sometimes known as the psychrometric ratio and, as indicated, b is approximately unity for the air-water system. For most systems involving air and an organic liquid, b = 1.3 - 2.5 and the wet-bulb temperature is higher than the adiabatic saturation temperature. This was confirmed in 1932 by SHERWOOD and COMINGS 2 who worked with water, ethanol, n-propanol, n-butanol, benzene, toluene, carbon tetrachloride, and n-propyl acetate, and found that the wet-bulb temperature was always higher than the adiabatic saturation temperature except in the case of water. 

Compounds which dissolve in concentrated sulphuric acid may be further subdivided into those which are soluble in syrupy phosphoric acid (A) and those which are insoluble in this solvent (B) in general, dissolution takes place without the production of appreciable heat or colour. Those in class A include alcohols, esters, aldehydes, methyl ketones and cyclic ketones provided that they contain less than nine carbon atoms. The solubility limit is somewhat lower than this for ethers thus n-propyl ether di olves in 85 per cent, phosphoric acid but n-butyl ether and anisole do not. Ethyl benzoate and ethyl malonate are insoluble. 

Figure 4.13 Solvent strength of eluent nlxtures on alunlna. (o) pentane-carbon tetrachloride, ( ) pentane-n-propyl chloride, (A)...

Figure 5. 67 MHz Carbon-13 NMR Spectra for Poly(n-propyl-methylsilane). (a) Proton Decoupled (b) Proton Coupled.

Tetrachloro-5,6-diphenyl- and -5,6-di-n-propyl calicene were found to yield intensely colored radical anions when interacted with alkali metals (Na, K)291. As ESR-spectroscopic investigation showed an unpaired electron spin is located on three-ring carbons Cs/C6 and their substituents. 

Let us use some of the methods applied to the germanium compounds to assess a few values from Table 3. A plot of the three gaseous enthalpies of formation for tetraethyl, tetra-n-propyl and tetra-n-butyl tin species versus the number of carbon atoms in the compound (equation 1) shows that probably at least one of them is inaccurate. In the liquid phase there is an additional enthalpy of formation, that for tetra-w-hexyl tin. A plot of the liquid enthalpies of formation versus total carbon number shows that the enthalpy of formation for tetraethyl tin is an outlier and the remaining three points define a fairly good straight line15 (r2 = 0.99953, a = -21.77 0.80, = 47.78 12.39). If... 

---