Hydrogen peroxide-ammonia,

Optical biosensors can be designed when a selective and fast bioreaction produces chemical species that can be determined by an optical sensor. Like the electrochemical sensors, enzymatic reactions that produce oxygen, ammonia, hydrogen peroxide, and protons can be utilized to fabricate optical sensors. 

Now chemists at the Central Research Laboratories of Produits Chimiques Ugine Kuhlmann (PCUK) at Lyons, France, developed beginning in 1970, under the direction of Dr F. Weiss, a novel continuous process for manufg hydrazine. The process is based on the discovery that ammonia, hydrogen peroxide, and a carbonyl compd, such as methyl ethyl ketone, react in presence of an amide and catalytic quantities of a phosphate to form an azine intermediate. This intermediate hydrolyzes quantitatively to hydrazine and to carbonyl compd which is recycled. The yield is claimed to be better than 75%... 

Enhancement of Enzymatic Digestibility of Recycled Newspaper by Addition of Surfactant in Ammonia-Hydrogen Peroxide Pretreatment... 

Index Entries Pretreatment newspaper ammonia hydrogen peroxide enzymatic digestibility surfactant. 

Other Electrolytic Solvents. Some liquids other than water can serve as ionizing solvents, with the power of dissolving electrolytes to give electrically conducting solutions. These liquids include liquid ammonia, hydrogen peroxide, and hydrogen fluoride. All of these liquids, like water, have very large dielectric constants. Liquids with... 

According to the Encyclopedia [2] Usinc Kuhlmann in France developed a new method which consists in a sequence of reactions ammonia, hydrogen peroxide and carbonyl compounds (c.g. propionc) react in the presence of ati amide and a catalytic quantity of phosphate to form an azine intermediate ... 

A number of inorganic species can also be determined by enzyme-catalyzed reactions. These species include ammonia, hydrogen peroxide, carbon dioxide, and hydroxylamine as well as nitrate, phosphate, and pyrophosphate ions. 

DISPOSAL AND STORAGE METHODS silver metal and soluble silver compounds may be disposed of in sealed containers in a secured, sanitary landfill, metallic silver may be routed to a metal salvage facility store in a cool, dry location maintain adequate ventilation keep in the dark, as most silver salts are light-sensitive separate from combustibles, such as acetylene, ammonia, hydrogen peroxide, and chlorine trifluoride. 

Incompatibilities and Reactivities Acetylene, ammonia, hydrogen peroxide,... 

Generalized Procedure for Polymerization with Ammonia-Hydrogen Peroxide [1]... 

Particularly when PVP is considered for application as a blood plasma extender, trace amounts of extraneous materials may be objectionable. The ammonia-hydrogen peroxide system discussed above may give rise to acetaldehyde-ammonia complexes that may be capable of further condensation reactions. Hydrogen peroxide may also oxidize acetaldehyde to acetic acid. The molecular weight distribution of the polymer also appears to be critical in blood plasma extenders. 

Ugine Kulmann Process, The technology for this process was developed by Produits Chemiques Ugine Kulmann of France, based on the ammonia, hydrogen peroxide, and ketone route to hydrazine. Methyl ethyl... 

The schematic of the process is shown in Fig. 28.29. The manufacturing procedure is divided into five major steps the synthesis of azine, the removal of low boilers, high boilers separation, hydrolysis of azine, and the dehydration of hydrazine. The synthesis of azine requires a residence time of 7 hours. Ammonia, hydrogen peroxide, and methyl ethyl ketone (MEK) are fed into the reactors along with methanol and acetonitrile at about 50°C. Small amounts of the disodium salt of ethylenediamine tetracetic acid are added to the reactants. In the low-boilers removal step, the unreacted ammonia, MeOH, MEK, and acetonitrile are separated and recycled to the reactors. The high-boilers solution contains water, MEK-azine, and acetamide. The acetamide is formed in the following reaction ... 

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