Bismuth Borax

Sihcon carbide is comparatively stable. The only violent reaction occurs when SiC is heated with a mixture of potassium dichromate and lead chromate. Chemical reactions do, however, take place between sihcon carbide and a variety of compounds at relatively high temperatures. Sodium sihcate attacks SiC above 1300°C, and SiC reacts with calcium and magnesium oxides above 1000°C and with copper oxide at 800°C to form the metal sihcide. Sihcon carbide decomposes in fused alkahes such as potassium chromate or sodium chromate and in fused borax or cryohte, and reacts with carbon dioxide, hydrogen, ak, and steam. Sihcon carbide, resistant to chlorine below 700°C, reacts to form carbon and sihcon tetrachloride at high temperature. SiC dissociates in molten kon and the sihcon reacts with oxides present in the melt, a reaction of use in the metallurgy of kon and steel (qv). The dense, self-bonded type of SiC has good resistance to aluminum up to about 800°C, to bismuth and zinc at 600°C, and to tin up to 400°C a new sihcon nitride-bonded type exhibits improved resistance to cryohte. 

Miller A process for purifying and removing silver from gold by passing chlorine gas through the molten metal, covered with borax. The silver forms silver chloride, which floats to the top. Bismuth, antimony, and arsenic are eliminated as their volatile chlorides. Developed by F. B. Miller at the Sydney Mint in Australia in 1867 and soon in world-wide use. 

Absorption, emission and excitation spectra and quantum efficiencies of luminescence of bismuth in borax, phosphate and germanate glasses were obtained by Reisfeld and Boehm (70) and the spectral data are presented in Table 5. 

Table 5. Spectral Data for Bismuth and Borax Glasses...

Treatment for Ni ht-Sweats in Consumption. Powdered borax, 5 drachms washed Bulphnr, 1 ounce subnitrate of bismuth, 11 drachms divido into 40 powders, 1 to bo given eveiy 2 hours (22 a day). 4 to 5 days of treatment will suspend or diminish this troublesome and exhausting symptom, and give much relief to tho patient. 

Barium carbonate Barium chloride Barium hydroxide Barium sulfate Bismuth carbonate Borax Boric acid... 

A solution of bismuth (III) nitrate and mannitol, prepared as described above under BiONOs, is precipitated with borax solution. The finely granular crystal powder is removed by suction, washed and dried. 

Biphenyl, 134, 136, 144, 309, 315 polychlorinated, see Polychlorinated biphenyl Bismuth, 24, 26, 37, 40 Bismuth(II), 37 Bismuth hydride, 27 Borate, 73 Borax, 73 Boric acid, 73-75 Boron, 40, 60, 73-75 Bromine, 122, 133 4 -Bromo-4-acetylaminostilbene, 164 Bromobenzene, 136 l,2-Bromo-3-chloropropane, 149 Butane, 309, 315, 326 1,4-Butanediol, 214 Butanol, 126 A-Butylaniline, 173 tm-Butylbenzene, 136 Butyraldehyde, 213... 

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