Inert stock

Inert stock A term used by CGR Management Consultants to define slow moving categories of inventory. Components can include defective items, obsolete items, stranded odd quantity components with no demand, and lumpy demand items. The inert category can be a large portion of total inventory. Reducing it may require a concerted effort on several fronts. 

Sulfur. Low sulfur stocks and EV sulfur-accelerated systems have better aging resistance. Normally, the oxidation rate increases with the amount of sulfur used in the cure. The increased rate may be due to activation of adjacent C—H groups by high levels of combined sulfur. Saturated sulfides are more inert to oxidation than aHyUc sulfides. Polysulfidic cross-links impart excessive hardening of SBR as compared to more stable monosulfidic cross-links. 

Selenium precursor stock solution was prepared by adding 0.32 mmol of selenium powder to 20 mL deionised water in a three-necked flask. Sodium borohydride (0.81 mmol) was carefully added to this mixture and the flask was immediately purged with nitrogen gas to create an inert environment. The mixture was then stirred for 2 h, at room temperature. The entire selenium dissolves in water giving rise to a colourless selenium solution. The cadmium solution was prepared by adding 0.32 mmol of CdCb powder in 20 mL of deionised water. The zinc solution was prepared by dissolving 0.32 mmol ZnCb in 20 mL of... 

Store under a chemically inert medium (stocks should be checked regularly to ensure that an adequate level of inert medium is maintained). 

Solutions were prepared in an inert atmosphere box. Volumetric measurements based upon density were used. Stock solutions appeared stable for several months in the box. Hypodermic syringes and small volumetric flasks were used to measure and store the solutions. 

Particles produced in the gas phase must be trapped in condensed media, such as on solid substrates or in liquids, in order to accumulate, stock, and handle them. The surface of newly formed metallic fine particles is very active and is impossible to keep clean in an ambient condition, including gold. The surface must be stabilized by virtue of appropriate surface stabilizers or passivated with controlled surface chemical reaction or protected by inert materials. Low-temperature technique is also applied to depress surface activity. Many nanoparticles are stabilized in a solid matrix such as an inert gas at cryogenic temperature. At the laboratory scale, there are many reports on physical properties of nanometer-sized metallic particles measured at low temperature. However, we have difficulty in handling particles if they are in a solid matrix or on a solid substrate, especially at cryogenic temperature. On the other hand, a dispersion system in fluids is good for handling, characterization, and advanced treatment of particles if the particles are stabilized. 

The necessity of phasing out production and use of CFCs is explained in Sections 8.3 and 12.1. The lesson to be learned is that inert does not necessarily mean harmless no product or by-product of industry can be released into the environment without careful consideration of the consequences. The questions that remain are how can existing stocks of these very inert fluids be destroyed,16 and what can take their place as refrigerants and solvents 17... 

The problem received concentrated attention. One method (87) introduced used naphtha as a diluent, with an inert material, such as diatomaceous earth, to build up the wax crystal structure artificially, so that relatively good filtration rates were obtained and a wash could be applied to the wax cake on the filter to displace the retained oil.. This method was identified as the Weir process or filter-aid dewaxing process and was placed in commercial operation about 1928 (30). It was the first commercial process capable of successfully dewaxing the intermediate distillates, as well as paraffin distillates of lowest viscosity and residual stocks of highest viscosity. 

Three stock solutions are prepared inside an inert (nitrogen) atmosphere glove box as follows A) 0.1M cadmium acetate in 80%methanol and 20% acetonitrile B) 0.1M sodium sulfide in 50% water and 50% methanol C) 0.2M thiophenol in acetonitrile. These stock solutions are mixed together in ratios... 

Less commonly, other experimental conditions may need to be controlled. For example, it may be that the presence of O2 in solution affects the reaction, in which case stock solutions and the reaction mixture should be flushed and then kept saturated with an inert gas (nitrogen or, preferably, argon). For reactions in nonaqueous solvents, of course, water may need to be rigorously excluded. And sometimes, a chemical process is affected by light if any of the species involved is light sensitive. In this event, stock solutions and the... 

Preparative Methods see Trichloro(cyclopentadienyl)titanium. Handling, Storage, and Precautions best handled as stock solution either in Et20 (ca. 0.1 M) or toluene (ca. 1.5 M), which must be protected from moisture and UV light. If handled under an inert atmosphere (argon), such solutions can be stored in a refrigerator (8 °C) for several months (possibly much longer) without deterioration. Reactions should be carried out in dry equipment and with absolute solvents under Ar or N2. 

Flat white paints are stocked as white paint and tinting colors are added to make a color chosen by the consumers. Equal white tinting strength is controlled through quality control so that the colors obtained will not differ. The most expensive major component of any white flat paint on a volume basis is the Ti02. Inert pigment such as talc is added to reduce the cost. 

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