M-Propyl alcohol

Developing Solvent Prepare a mixture of M-propyl alcohol, ethyl acetate, and water (70 20 10). 

Formed in 76 per cent yield by the catalytic oxidation of M-propyl alcohol. Day and Eisner, J. Phys. Chem. 36, 1912 (1932)... 

Hinkamp et al. [55] prepared n-propyl nitrate with a yield of 66.5 % by using mixture acids of 20 wt% HNO3, 68 wt% H2SO4, and 12 wt% H2O. For this preparation method, the yield is low and acid mist could be formed for environmental pollution in the process of waste acid treatment by sulfuric acid method. People [56] improved the M-propyl alcohol nitration on the nitrating agent and the... 

The 2003 ACGIH threshold limit valuetime-weighted average (TLV-TWA) for -propyl alcohol is 200 ppm (492mg/m ) with a shortterm excursion limit (STEL)/ceiling of 250ppm (614mg/m ) and a notation for skin absorption. 

A solution of 105.1 g. (0.5 mole) of benzil (Note 1) in 325 ml. of w-propyl alcohol is prepared in a 1-1. round-bottomed flask which is fitted with an efficient reflux condenser. To this solution 76 g. (1.30 moles) of 85% hydrazine hydrate (Note 2) is added, and the mixture (Note 2) is heated under reflux for 60 hours. The solution is cooled with an ice bath, and the benzil dihydrazone is separated by suction filtration. The crystals are washed with 200 ml. of cold, absolute ethanol and dried (Note 3) on the suction filter for 1 hour. The yield of benzil dihydrazone is 99-106 g. (83-89%), m.p. 150-151.5°. 

The tinctura iodi of the British Pharmacopoeia is a soln. of half an ounce of iodine, and a quarter of an ounce of potassium iodide in a pint of rectified spirit. P. Wantig found the mol. ht. of soln. —1 941 Cals., and S. U. Pickering —1 714 per 880 mol. of ethyl alcohol. C. Lowig found that alcoholic tincture of bromine is slowly decomposed in darkness, rapidly in light. Alcoholic soln. of iodine, according to H. E. Barnard, are stable in light and in darkness, but according to J. M. Eder they decompose 1000 times more slowly than chlorine water under similar conditions T. Budde has shown that hydriodic acid, acetic ester, and aldehyde are formed, and the electrical conductivity of the soln. increases. J. H. Mathews and E. H. Archibald and W. A. Patrick found a freshly prepared AT-soln. to have an electrical conductivity of 2 4 XlO-6 reciprocal ohms and a sat. soln., 1 61 X10 4 reciprocal ohms at 25°. The decomposition is accelerated by the presence of platinum. The heat of soln. decreases with concentration from —7 92 to —7 42 cals, respectively for dilute and sat. soln. in methyl alcohol, and likewise from —4 88 to —5 22 cals, for similar soln. in ethyl alcohol. The solubility of iodine in aq. soln. of propyl alcohol is not very different from that in ethyl alcohol. 

Nitro-2-n-propoxyaniline [553-79-7] M 196.2, m 47.5-48.5 . Crystd from n-propyl alcohol/pet ether. 

Isopropanol [67-63-0] M 60.1, b 82.5°, d 0.783, n25-8 1.3739. Isopropyl alcohol is prepared commercially by dissolution of propene in H2SO4, followed by hydrolysis of the sulphate ester. Major impurities are water, lower alcohols and oxidation products such as aldehydes and ketones. Purification of isopropanol follows substantially the same procedure as for n-propyl alcohol. 

ANISIC ACID (m.p. 184.2) Ethyl alcohol Methanol Propyl alcohol Water... 

Solubility in Water. Alkyl halides and alcohols differ markedly from one another in their solubility in water. All alkyl halides are insoluble in water, but low-molecular-weight alcohols (methyl, ethyl, M-propyl, and isopropyl) are soluble in water in all proportions. Their ability to participate in intermolecular hydrogen bonding not only affects the boiling points of alcohols, but also enhances their water solubility. Hydrogen-bonded networks of the type shown in Figure 4.5, in which alcohol and water molecules associate with one another, replace the alcohol-alcohol and water-water hydrogen-bonded networks present in the pure substances. 

Feedstock -magnesium compounds m [MAGNESIUMCOMPOUNDS] (Vol 15) -molasses m [SYRUPS] (Vol 23) -precipitated silica [SILICA - AMORPHOUS SILICA] (Vol 21) - [AMMONIA] (Vol 2) -isopropyl alcohol as [PROPYL ALCOHOLS - ISOPROPYL ALCOHOL] (Vol 20) -propylene as [PROPYLENE] (Vol 20)... 

Flotation - [AMINES - FATTY AMINES] (Vol 2) - [FLOTATION] (Vol 11) - [FOAMS] (Vol 11) - [METALLURGY-SURVEY] (Vol 16) -dye water effluent treatment [DYES, ENVIRONMENTAL CHEMISTRY] (Vol 8) -isopropyl xanthates for [PROPYL ALCOHOLS - ISOPROPYL ALCOHOL] (Vol 20) -of lead ore [LEAD] (Vol 15) -formica [MICA] (Vol 16) -m paper recycling [RECYCLING - PAPER] (Vol 21) -ofpotassium chlonde [POTASSIUM COMPOUNDS] (Vol 19) -silicates for [SILICON COMPOUNDS - SYNTHETIC INORGANIC SILICATES] (Vol 22) -use of copper composition [COPPER COMPOUNDS] (Vol 7) -usmgSCFs [SUPERCRITICAL FLUIDS] (Vol 23)... 

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