Übersetzung für "Oxidierbarkeit" in Englisch

It was not possible to incubate for longer periods because of the ready oxidizability of the cysteine.

In addition, there are specifications for physico-chemical parameters such as conductivity, pH and oxidisability.

The chemical oxygen demand is a measure of the oxidisability of a substance, expressed as the equivalent amount in oxygen of an oxidising reagent consumed by the substance under fixed laboratory conditions.

Although the concentration of oxidizable free metal ions is kept extremely low in these baths, the possibility of oxidation is still sufficient to require further stabilization of the fogging agent against atmospheric oxygen.

Furthermore, because the amine used is relatively easily oxidized, it is advantageous to carry out the reaction in an inert atmosphere, for example under nitrogen or argon.

Sulphur-free regulators generally have the advantage over mercaptan regulators of a less noxious odour and reduced oxidisability, but in general are also attended by the disadvantage of a considerably weaker transfer activity so that higher concentrations of regulator are required for obtaining comparable molecular weights.

It has now been found that sulphur-free enol ethers are comparable with alkyl mercaptans as molecular weight regulators for the polymerisation of methyl methacrylate without having the disadvantages thereof, such as odour or oxidisability.

Regulating systems which are free from sulphur generally have the advantage over mercaptan regulators of having a less noxious odour and less tendency to oxidation but they generally also have the disadvantage of a substantially lower transfer activity so that they have to be used at higher concentrations to produce comparable molecular weights.

It has now been found that, when enol ethers which are free from sulphur are used as molecular weight regulators for the polymerisation of mixtures of aromatic vinyl compounds, (meth)acrylonitrile and optionally (meth)acrylic acid alkyl esters, they have a regulating activity comparable to that of alkylmercaptans without the disadvantages of mercaptans, such as their odour and tendency to oxidation.

Important advantages of the enol ethers used according to the invention compared with the alkylmercaptans generally used in the art are that, while having a comparable regulating activity, they are odourless, have no tendency to oxidize and exert an additional stabilizing influence on the polymers under thermal stress.

However, one problem occurring in coloring using tin electrolytes is the tendency of tin to be readily oxidized. This may cause precipitates of basic tin(IV) oxide hydrates (stannic acid) to be formed rapidly during use, and sometimes even during storage.

The electrolyte of claim 1 wherein the stabilizer substance is a readily oxidized low-valent organosulfur or organophosphorus compound.

It is an object of the present invention to provide new ED compounds for the dye diffusion transfer process which satisfy the requirements with regard to their capacity to reduce and to be oxidized and which are superior to the known ED compounds in the quality of the color images produced.

Moreover, it has turned out that tantalum silicide is superior to tungsten silicide in regard to adhesion and oxidizability and forms a SiO2 passivation layer at higher temperatures.

Such a mixing ratio, which is intended to include mixing ratios between 40:60 to 60:40, produces metallic felts with a very slight oxidizability, which, on the one hand, crucially increases the life span of such metallic felts and, on the other hand, preserves their felt structure for a longer time.

However, one of the problems encountered where coloring is carried out with tin electrolytes is that the tin readily oxidizes so that basic tin(IV) oxide hydrates (stannic acid) are rapidly precipitated during the application and, in some cases, even during the storage of the Sn solutions.

For this reason, there is a high risk that these substances decompose during production of preparations and that the effectiveness of the pharmaceutical preparation is affected by the oxidisability of the compounds which contain many double bonds.

The calcium supplied by PEM has proved unsuitable for use by IPS because of its high levelof oxidation, and North American producers were said not to offer acceptable continuity of supply.

Stations El3, E14 and El5 measured oxidizability with potassium permanganate rather than COD.

In the "Technische Anleitung zur Reinhaltung der Luft" (English translation, "Technical Instructions for Maintaining Air Quality"), n-butyraldehyde is classified in Class 2, and sometimes in Class 1, the latter due to its ready oxidizability to butyric acid.

However, since the oxidizability of fats decreases with decreasing iodine number, relatively highly unsaturated fats and oils, i.e. those having iodine numbers above about 100 and preferably above about 130, are normally used (cf. for example "Rauchwarenherstellung und Pelzkonfektion", VEB Fachbuchverlag Leipzig 1970, page 116).

Such joints have the disadvantage that olefinic double bonds remain behind in the structure of the cured, modified epoxide resin and that these double bonds, because of their oxidizability, impair the chemical and physical properties of the cured resins.

In spite of the difficulty of oxidizing the dye-stuff used, the dyeing thus produced is oxidized in a fault-free manner as comparisons with samples carefully oxidized in a known manner have shown.