Iron wire

A laboratory capped glass vial with a F shaped iron wire attached to its inner side by plasticine, (see Fig. 7), was tomographed with 80 keV. 

Figure 7. Test object no. 2, capped glass vial with an iron wire on the inside.

Special containers have been developed for anesthetic ether to prevent deterioration before use. Their effectiveness as stabHizers usuaHy depends on the presence of a lower oxide of a metal having more than one oxidation state. Thus the sides and the bottoms of tin-plate containers are electroplated with copper, which contains a smaH amount of cuprous oxide. Staimous oxide is also used in the linings for tin containers. Instead of using special containers, iron wire or certain other metals and aHoys or organic compounds have been added to ether to stabHize it. 

Courtesy of Dr. Lewis V. Judson with I. H. Fullmer, National Bureau of Standards, f Sometimes used for iron wire. 

Cyclic heating tests on electrically heated nickel-chromium and nickel-chromium-iron wires in nitrogenshowed that the lives to burn-out were at least as good as those obtained in air. The same was true in ammonia at 1 050°C, but at 1 150°C and above the life was less in ammonia than in air (Table 7.30) indicating, as would be expected, that it is atomic nitrogen which is most effectively absorbed. 

Applications Ion implantation is widely employed to improve the life of tools. Thus press tools, dies and gear cutters can be treated to increase their durability by three times or more. Nitrogen-implanted tungsten carbide drawing dies for copper and iron wire can be improved up to fivefold. By implanting chromium, aluminium or silicon a considerable increase in the corrosion resistance of steel can be obtained. Implantation of chromium into aircraft bearing alloys has improved their durability in marine environments . 

Notes. (1) Iron wire of 99.9 per cent purity is available commercially and is a suitable analytical standard. If the wire exhibits any sign of rust, it should be drawn between two pieces of fine emery cloth, and then wiped with a clean, dry cloth before use. The general reaction which occurs has been given in Section 10.92. 

Fig. 18. Example of the linear effect of bulk fluid subcooling on burn-out for copper and iron wires with pool boiling of water at atmospheric pressure [from Farber (FI)].

C04-0039. Predict whether or not a reaction will occur, and if a reaction does take place, write the half-reactions and the balanced redox reaction (a) a strip of nickel wire is dipped in 6.0 M HCl (b) aluminum foil is dipped in aqueous CaCl2 (c) a lead rod is dipped in a beaker of water (d) an iron wire is immersed in a solution of silver nitrate. 

A gravimetric factor is a number used to convert, by multiplication, the weight of one chemical to the weight of another. Such a conversion can be very useful in an analytical laboratory. For example, if a recipe for a solution of iron calls for 55 g of FeCl3 but a technician finds only iron wire on the chemical shelf, he or she would want to know how much iron metal is equivalent to 55 g of FeCl3 so that he or she could prepare the solution with the iron wire instead and have the same weight of iron in either case. In one formula unit of FeCl3, there is one atom of Fe, so the fraction of iron(III) chloride that is iron metal is calculated as follows ... 

Two asbestos plates and a roll of iron-wire gauze (length 5 cm. . 

Specifications Chain Link Iron Wire (Wirewall) Wood... 

Anhydrous Ethyl Ether. This is for those formulas calling for dry, pure, or anhydrous ether. The ether product from above is dried over thin slices of metallic sodium (metallic sodium wire works well also) for 24 hours. Then the ether is distilled on a water bath, over fresh (fresh means a different batch than what you used to dry with) metallic sodium. Note Ether develops explosive peroxides upon sitting for any length of time, even if just purchased from a supply house. Therefore, before handling ether, which has been stored, shake with ferrous sulphate or with lead peroxide. To keep peroxides from forming in fresh ether add several sections of copper or iron wire to the dark container and store in a cool place. 

Plastic Igniter Cord (PIC) is a modern version of quickmatch in which the gunpowder is replaced by a delay composition, consisting essentially of lead dioxide and silicon, while the support material is aluminium or iron wire. A plastic tube encloses the fuse, as in the manner of electrical... 

Numerous studies relating to Ostwald s proposition were carried out in the B. A. S. F. in 1900 by the chemist C. Bosch who had entered the services of the company shortly before 1900. He used pressures of one up to a few (about 5) atmospheres and catalysts such as iron wire, as recommended by Ostwald. Calculations carried out by W. Gaus indicated that elevated pressures should lead to better yields. However, no definite success was achieved at this stage. 

Oxidation at 50 °C of Fe" sulphate solution containing iron wire and lepidocro-cite seeds (Nitschmarm, 1938). 

Fig. 19 represents a mercury-filled siphon containing an iron wire, aa, in each leg. Any gas which was introduced would rise to bb, the upper part of the siphon. The mercury basins could be made part of an electric circuit. 

Insert inside the sample a piece of thin iron wire (fuse) and connect its ends with two electric terminals found in the head of the bomb... 

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