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Due to the fact that perchloric acid resembles sulfuric acid in many respects without having many of the disadvantages of use possessed by the latter, the devising of a cheaper means of producing it would be well warranted by its increased use in both analytical and industrial work. The present work was undertaken with the above idea in view and consisted in studying quantitatively the reaction taking place between nitric oxide (NO), nitric acid, and ammonium perchlorate.

Anhydrous perchloric acid is an unstable compound, decomposing spontaneously after a few weeks even when kept in the dark. It is a violently reacting oxidizing agent for many organic substances but aqueous solutions of the acid are not affected by light and are not active oxidizing agents.

Perchloric acid solutions (60% strength being the standard commercial form of the acid) are strong, mono-basic solutions which are stable up to the 60% strength and have high boiling points. The salts which the acid forms are nearly all soluble, the potassium, rubidium, caesium and thallium perchlorates being the only ones which are only slightly soluble. This would recommend it over sulfuric acid in many cases where insoluble salts of the latter prevent its use or cause it to seriously interfere on this account in analytical determinations. Also the difference in the solubilities of the potassium and sodium salts permits an easy separation of the perchlorates of these two metals. The maximum boiling point of aqueous solutions at atmospheric pressure is 203° C., which corresponds to a constant boiling mixture having a perchloric acid content of 72.3%. Below 160°C. the distillate contains less than 1% of perchloric acid. Most perchlorates are deliquescent except ammonium, potassium, lead and mercury salts.

There have been a number of processes devised for the production of perchloric acid, some of which are only of theoretical importance, but the following methods are the ones which have been used to some extent commercially:

Due to the fact that perchloric acid resembles sulfuric acid in many respects without having many of the disadvantages of use possessed by the latter, the devising of a cheaper means of producing it would be well warranted by its increased use in both analytical and industrial work. The present work was undertaken with the above idea in view and consisted in studying quantitatively the reaction taking place between nitric oxide (NO), nitric acid, and ammonium perchlorate.

Anhydrous perchloric acid is an unstable compound, decomposing spontaneously after a few weeks even when kept in the dark. It is a violently reacting oxidizing agent for many organic substances but aqueous solutions of the acid are not affected by light and are not active oxidizing agents.

Perchloric acid solutions (60% strength being the standard commercial form of the acid) are strong, mono-basic solutions which are stable up to the 60% strength and have high boiling points. The salts which the acid forms are nearly all soluble, the potassium, rubidium, caesium and thallium perchlorates being the only ones which are only slightly soluble. This would recommend it over sulfuric acid in many cases where insoluble salts of the latter prevent its use or cause it to seriously interfere on this account in analytical determinations. Also the difference in the solubilities of the potassium and sodium salts permits an easy separation of the perchlorates of these two metals. The maximum boiling point of aqueous solutions at atmospheric pressure is 203° C., which corresponds to a constant boiling mixture having a perchloric acid content of 72.3%. Below 160°C. the distillate contains less than 1% of perchloric acid. Most perchlorates are deliquescent except ammonium, potassium, lead and mercury salts.

There have been a number of processes devised for the production of perchloric acid, some of which are only of theoretical importance, but the following methods are the ones which have been used to some extent commercially:

The Hall of Heating and Air Conditioning had over 46,000 visitors

Madrid, March 18, 2009 .- Wagner Solar, technological reference in the Spanish market for solar energy, welcomed their participation in the Exhibition of Heating and Refrigeration 2009, Climate.

It is the first time Wagner attends Solar Air Conditioning, and since the company wanted to emphasize that the show has lived up to expectations. Salome Alarcon, Director of Marketing wanted to emphasize that "we have achieved our goals in number of visitors, industry professionals from architects, installers, very interested in innovative solutions that has made Wagner Solar, the flagship product being the large-format sensor LBM we manufacture in Leganés. We must highlight the great interest shown by all participants especially in regard to new equipment Drain-Back EASYsol and promotion campaign "We know that the first time is special," the LBM, a modular sensor sizes up to 10m2, that it is increasingly in demand in the market.

The Hall of Heating and Air Conditioning had over 46,000 visitors

Madrid, March 18, 2009 .- Wagner Solar, technological reference in the Spanish market for solar energy, welcomed their participation in the Exhibition of Heating and Refrigeration 2009, Climate.

It is the first time Wagner attends Solar Air Conditioning, and since the company wanted to emphasize that the show has lived up to expectations. Salome Alarcon, Director of Marketing wanted to emphasize that "we have achieved our goals in number of visitors, industry professionals from architects, installers, very interested in innovative solutions that has made Wagner Solar, the flagship product being the large-format sensor LBM we manufacture in Leganés. We must highlight the great interest shown by all participants especially in regard to new equipment Drain-Back EASYsol and promotion campaign "We know that the first time is special," the LBM, a modular sensor sizes up to 10m2, that it is increasingly in demand in the market.

A study involving the Consejo Superior de Investigaciones Científicas (CSIC) gets a molecule that could serve to regenerate neurons. The work, led by the Institute of Biomedical Research of Barcelona, has achieved a compound that in vitro growing axons of injured neurons in mice. This substance could be used in future to design new drugs that promote axonal regeneration in spinal cord injuries. The work has also engaged the University of Barcelona.

Axons, extensions of nerve cells through which nerve impulses travel, allowing the connection of neuron to neuron and the execution of orders from the brain to the muscles. One of the main problems of the nervous system of an adult is the inability of regenerating axons when they suffer an injury.

A study involving the Consejo Superior de Investigaciones Científicas (CSIC) gets a molecule that could serve to regenerate neurons. The work, led by the Institute of Biomedical Research of Barcelona, has achieved a compound that in vitro growing axons of injured neurons in mice. This substance could be used in future to design new drugs that promote axonal regeneration in spinal cord injuries. The work has also engaged the University of Barcelona.

Axons, extensions of nerve cells through which nerve impulses travel, allowing the connection of neuron to neuron and the execution of orders from the brain to the muscles. One of the main problems of the nervous system of an adult is the inability of regenerating axons when they suffer an injury.