Classification, copper oxide

DOT CLASSIFICATION 4.3 Label Danger When Wet, Corrosive, Flammable Liquid SAFETY PROFILE Moderately toxic by inhaladon. Corrosive. A severe irritant to skin, eyes, and mucous membranes. Ignites spontaneously in ait. A very dangerous fire hazard when exposed to heat or flame. Forms impact-sensitive explosive mixtures with potassium permanganate, lead(II) oxide, lead(TV) oxide, copper oxide, silver oxide. To fight fire, use water, foam, CO2, mist. When heated to decomposition it emits toxic fumes of CL. See also CHLOROSILANE. 

Marezio, M., and C. Chaillout, 1994, A classification of the copper oxide superconductors and the relationship between the Cu valence and the superconducting properties, in Materials and Crystallographic Aspects of HTj-Superconductivity, ed. E. Kaldis, NATO ASI Series E, Vol. 263 (Kluwer Academic Publishers, Dordrecht) pp, 3-16. 

Copper oxide film thickness, angstroms ISA classification Severity Effects... 

Taking into account the electron density relocation (Table 2.4) two routes of NO adsorption can be distinguished. Thus, the nitric oxide coordinates to the monovalent Cr, Ni, and Cu ions in an oxidative way (A<2M > 0), whereas for the rest of the TMIs in a reductive way (AgM < 0). Although this classification is based on the rather simplified criteria, it is well substantiated by experimental observations. Examples of reductive adsorption are provided by interaction of NO with NinSi02 and NinZSM-5, leading at T > 200 K to a Ni -NOs+ adduct identified by the characteristic EPR signal [71]. At elevated temperatures, similar reduction takes place for ConZSM-5 [63], whereas in the case of Cu ZSM-5 part of the monovalent copper is oxidized by NO to Cu2+, as it can readily be inferred from IR and EPR spectra [72,73], This point is discussed in more detail elsewhere [4,57],... 

The study of the molecular weight of the intermediate course is an effective method for the classification of polymerization as chain or stepwise reaction. In Figure 3, the molecular weight of the obtained polymer is plotted against the yield, for the oxidative polymerization of dimethylphenol with the copper catalyst and for the electro-oxidative polymerization. The molecular weight rises sharply in the last stage of the reaction for the copper-catalyzed polymerization. This behavior is explained by a stepwise growth mechanism. 

Fluid milks have been classified by Thurston (1937) into three categories based on their ability to undergo oxidative deterioration (1) spontaneous, for those milks that spontaneously develop off-flavor within 48 hr after milking (2) susceptible, for those milks that develop off-flavor within 48 hr after contamination with cupric ion and (3) resistant, for those milks that exhibit no flavor defect, even after contamination with copper and storage for 48 hr. A similar classification has been employed by Dunkley and Franke (1967). 

Amine oxidases catalyze the oxidation of amines, diamines, and polyamines. According to their ability to recognize one of those substrates preferentially, amine oxidases may be divided into monoamine oxidases, diamine oxidases, and polyamine oxidases, respectively. Several different enzymes fall into the amine oxidase class, and the classification of some of them still remains ambiguous. The term monoamine oxidase (flavin-containing, EC 1.4.3.4) was introduced to contrast with copper-containing amine oxidases (EC 1.4.3.6). 

Before they were characterized by x-ray crystallography, the classification of the structures of copper proteins was initially based on the spectroscopic features of their active site in the oxidized state. The tremendous development of crystallographic and spectroscopic techniques in recent years has enabled the identification of as many as seven different types of active sites in these proteins type 1, type 2, type 3, type 4, CuA, CuB and Cuz. The characteristics of these metal sites are briefly described below. 

DOT CLASSIFICATION 5,1 Label Oxidizer SAFETY PROFILE Poison by intraperitoneal route. See also COPPER COMPOUNDS and COPPER(II) PERCHLORATE. An oxidizer. When heated to decomposition it emits toxic fumes of Cl". 

DOT CLASSIFICATION 5.1 Label Oxidizer SAFETY PROFILE Explosive reaction when heated with carbon, 2-aminophenol + tetrahydrofuran (at 65°C). Forms a friction-sensitive explosive mixture with hydrocarbons. Violent reaction with diselenium dichloride, ethanol, potassium-sodium alloy. May ignite on contact with organic compounds. Incandescent reaction with metals (e.g., arsenic, antimony, copper, potassium, tin, and zinc). When heated to decomposition it emits toxic fumes of K2O. See also PEROXIDES. 

DOT CLASSIFICATION 5.1 Label Oxidizer SAFETY PROFILE A powerful oxidizer. Probably a skin, eye, and mucous membrane irritant. The tetrahydrated salt explodes at 60°C. Explosive reaction with copper(II) sulfide. Can react violendy with Al, Sb2S3,... 

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