Poison, react

Will the solid poison react with the reagents or solvent under the conditions of nse ... 

SAFETY PROFILE Confirmed human carcinogen with experimental tumorigenic data. A poison. Reacts violendy with H2O2, (KNO3 + S). When heated to decomposition or on contact with acid or acid fumes it emits highly toxic fumes of SO2, H2S, and As. Reacts with water or steam to emit toxic and flammable vapors. 

ACGIH TLV TWA 1 mg(Cu)/m3 DOT CLASSIFICATION 6.1 Label Poison SAFETY PROFILE A poison. Reacts violently with magnesium. When heated to decomposition it emits very toxic CN and NO.. See also CYANIDE and COPPER COMPOUNDS. 

In this respect, magnetic measurements give valuable information. They can show whether poisons react not only with surface metal atoms but also with subsurface atoms as for the case of H2S chemisorption over Nt/Si02 catalysts (refs. 11. 12) the loss of magnetization caused by H2S chemisorption at saturation at room temperature is twice that produced by H2 chemisorption at atmospheric pressure and room temperature in a separate experiment. Assuming that hydrogen chemisorption is restricted to surface metal atoms, then, it can be deduced that H2S is able to attack the nickel particle in depth (corrosive chemisorption). 

Ethylene undergoes a variety of reactions to form highly toxic and/or flammable substances. It catalytically oxidizes to ethylene oxide (highly toxic and explosive gas) reacts with chlorine and bromine to form ethylene dichloride and ethylene dibromide (toxic and carcinogens) reacts with hypochlorite to form ethylene chlorohydrin (poisonous) reacts with chlorine in the presence of FICl and light or chlorides of copper, iron, or calcium to form ethyl chloride (flammable gas, narcotic) and hydrates in the presence of H2SO4 to form diethyl ether (highly flammable). 

Chemical poisons React with and deactivate the catalyst Poisoning is usually irreversible and catalyst is discarded occasionally catalyst may be regenerated by suitable procedures. 

Some alcohols react readily with phenylisocyanate at room temperature, and others require heating, preferably in petroleum. Phenylisocyanate is poisonous and should not be heated outside a fume-cupboard except under a condenser. 

Diethyl sulphate, b.p. 210° (decomp.), does not ordinarily react so vigor ously as dimethyl sulphate, but is nevertheless of great value for ethylations. It is somewhat leas poisonous than the methyl analogue, but the same pre cautions should be taken. Both sulphates should be stored in glass stoppered bottles sealed with paraffin wax, for they attack cork. 

Covalent synthesis of complex molecules involves the reactive assembly of many atoms into subunits with aid of reagents and estabUshed as well as innovative reaction pathways. These subunits are then subjected to various reactions that will assemble the target molecule. These reaction schemes involve the protection of certain sensitive parts of the molecule while other parts are being reacted. Very complex molecules can be synthesized in this manner. A prime example of the success of this approach is the total synthesis of palytoxin, a poisonous substance found in marine soft corals (35). Other complex molecules synthesized by sequential addition of atoms and blocks of atoms include vitamin potentially anticancer KH-1 adenocarcinoma antigen,... 

Phosphorus(III) Oxide. Phosphoms(III) oxide [12440-00-5] the anhydride of phosphonic acid, is formed along with by-products such as phosphoms pentoxide and red phosphoms when phosphoms is burned with less than stoichiometric amounts of oxygen (62). Phosphoms(III) oxide is a poisonous, white, wax-like, crystalline material, which has a melting point of 23.8°C and a boiling point of 175.3°C. When added to hot water, phosphoms(III) oxide reacts violentiy and forms phosphine, phosphoric acid, and red phosphoms. Even in cold water, disproportionation maybe observed if the oxide is not well agitated, resulting in the formation of phosphoric acid and yellow or orange poorly defined polymeric lower oxides of phosphoms (LOOP). 

Stibiae may be inadvertentiy formed by acidified reducing agents reacting with antimony-containing materials. It is an extremely poisonous gas which causes blood destmction and damage to the fiver and kidneys (2). 

Ethyl alcohol is a flammable Hquid requiring a red label by the DOT and Coast Guard shipping classifications its flash point is 14°C (Tag, closed cup). Vapor concentrations between 3.3 and 19.0% by volume in air are explosive. Liquid ethyl alcohol can react vigorously with oxidi2ing materials. Ethyl alcohol has found wide appHcation in industry, and experience shows that it is not a serious industrial poison (273—275). If proper ventilation of the work environment is maintained, there is Httle likelihood that inhalation of the vapor will be ha2ardous. 

Lead compounds were not found on the surrounding activated coating layer, rather only associated with the precious metal. The Pt sites are less poisoned by lead than are Pd or Rh sites because the Pt sites are protected by the sulfur in the fuel. Fuel sulfur is converted to SO2 in the combustion process, and Pt easily oxidizes SO2 to SO on the catalyst site. The SO reacts with the lead compounds to form PbSO, which then moves off the catalyst site so that lead sulfate is not a severe catalyst poison. Neither Pd nor Rh is as active for the SO2 to SO reaction, and therefore do not enjoy the same protection as Pt. 

Toxic heavy metals and ions, eg, Pb, Hg, Bi, Sn, Zn, Cd, Cu, and Fe, may form alloys with catalytic metals (24). Materials such as metallic lead, ziac, and arsenic react irreversibly with precious metals and make the surface unavailable for catalytic reactions. Poisoning by heavy metals ordinarily destroys the activity of a precious-metal catalyst (8). 

It has been reported that below about 370°C, sulfur oxides reversibly inhibit CO conversion activity. This inhibition is greater at lower temperatures. CO conversion activity returns to normal shortly after removal of the sulfur from the exhaust (44). Above about 315°C, sulfur oxides react with the high surface area oxides to disperse the precious-metal catalytic agents and irreversibly poison CO conversion activity. 

Pore mouth or shell) poisoning occurs when the poisoning of a pore surface begins at the mouth and moves gradually inward. In this case the reactant must diffuse through the dead zone before it starts to react. P is the fraction of the pore that is deac tivated, Ci is the concentration at the end of the inac tive region, and x = — P)L is the coordinate there. 

Polymerization processes are characterized by extremes. Industrial products are mixtures with molecular weights of lO" to 10. In a particular polymerization of styrene the viscosity increased by a fac tor of lO " as conversion went from 0 to 60 percent. The adiabatic reaction temperature for complete polymerization of ethylene is 1,800 K (3,240 R). Heat transfer coefficients in stirred tanks with high viscosities can be as low as 25 W/(m °C) (16.2 Btu/[h fH °F]). Reaction times for butadiene-styrene rubbers are 8 to 12 h polyethylene molecules continue to grow lor 30 min whereas ethyl acrylate in 20% emulsion reacts in less than 1 min, so monomer must be added gradually to keep the temperature within hmits. Initiators of the chain reactions have concentration of 10" g mol/L so they are highly sensitive to poisons and impurities. 

Chemical Reactivity - Reactivity with Water Reacts vigorously with water, generating phosphine, which is a poisonous and spontaneously flammable gas Reactivity with Common Materials Can react with surface moisture to generate phosphine, which is toxic and spontaneously flammable Stability During Transport Stable if kept dry Neutralizing Agents for Acids and Caustics Not pertinent Polymerization Not pertinent Inhibitor of Polymerization Not pertinent. 

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