Potassium borates hydroxide

The electrical conductivities of soln. of a great many compounds in liquid hydrogen halides have been measured by E. H. Archibald and D. McIntosh. The conductivity is raised considerably by phosphoryl chloride. Sodium sodium sulphide, borate, phosphate, nitrate, thiosulphate, and arsenate chromic anhydride potassium nitrate, hydroxide, chromate, sulphide, bisulphate, and ferro- and ferri- cyanide ammonium fluoride and carbonate j rubidium and caesium chloride magnesium sulphate calcium fluoride ... 

B KjO U) Potassium borate (K2B 0 ) 290 BaiH OjCg) Barium hydroxide (BaOB) 337... 

Mobile phase A 0.1% pH 8.0 potassium borate buffer B 6 mM KH2PO4 containing 5 mM tetramethylammonium hydroxide, and 2 mM dimethyloctylamine, pH ac usted to 6.50 with phosphoric add C MeCN buJEfer 40 60 (Buffer was 6 mM KH2PO4 containing 5 mM tetramethylammonium hydroxide, and 2 mM dimethyloctylamine, pH adjusted to 6.50 with phosphoric add.) D MeCN biiffer 33 67 (Buffer was 6 mM KH2PO4 containing 5... 

Sample preparation 1 mL Blood -i- 100 p-L 1 pg/mL metycaine + 1 mL pH 9 saturated potassium borate buffer, mix, add 5 mL butyl chloride, extract. Remove the organic layer and add it to 1 mL 100 mM sulfuric acid, extract. Remove the aqueous layer and basify it with concentrated ammonium hydroxide, add 50 pL chloroform, extract. Remove the chloroform layer, evaporate to dryness under air at 60°, reconstitute in 100 pL MeOH, inject a 20 pL aliquot. 

At this point, the solution contains the K[7,8-C2B9H12] salt in essentially quantitative yield, along with excess potassium hydroxide and some potassium borate in anhydrous methanol. This solution is ideally suited for synthesis of the mixed cyclopentadienyl-metallocarbaborane sandwich compounds of the type (C5H5)Mni(C2B9H11) according to the alcoholic route ,6 cf. this volume, Chapter 5, Section 54. 

The volatile solvents are then distilled off at 50° and 10 torr. When approximately 100 mL of the distillate (containing essentially methanol and some trimethyl borate) have been collected, the remainder is diluted with 400 mL of water and the vacuum distillation is continued until about 300 mL of distillate are collected. A viscous water solution of the K[7,8-C2B9Hl2] with excess potassium hydroxide and potassium borate remains. 

Couillard and Craighead (1994) showed that direct application of positive photoresist could be achieved on a thick layer of macroporous sihcon and that the photoresist pattern could subsequently be transferred via an O2 plasma etch. The photoresist was developed in a basic solvent (tetramethylammonium hydroxide or TMAH). These developers rapidly dissolve high-porosity microporous silicon features however, PS formed from lightly doped n-type Si can survive this treatment. Positive photoresists and alkaline developers (typically containing metal ions such as potassium borate) can be used directly on PS if the surface is first partially oxidized by exposure to ozone. Features of 500 pm diameter were fabricated in this manner on a 60-cycle ruggate filter on... 

The electrolyte used in secondary silver cells is generally an aqueous solution (35 to 45% concentration) of potassium hydroxide (KOH). Lower concentrations of electrolyte provide lower resistivity and thus a higher voltage output under load as weU as a lower freezing point. Concentrations below 45% KOH, however, are more corrosive to the ceUulosic separators typically used in silver-based batteries and are not used for extended wet-hfe applications. Table 33.3 depicts the critical parameters of various KOH solutions. Various additives such as zinc oxide, lithium hydroxide, potassium fluoride, potassium borate, tin, and lead have been used to reduce the solubility of the zinc electrode. " ... 

In buffered solution, the DPPH radical can show variations in its stability. Al-Dabbas et al. (2007) found that in methanol solution containing acetate buffer (pH 5.0), the absorbance of the DPPH radical was not reduced in a wide range of concentrations examined (0.01-0.2 mmol L ), while in phosphate buffer (pH 7.0), a reduction of the DPPH radical absorbance was observed at concentrations above 0.05 mmol L. In other studies, Ozcelik et al. (2003) evaluated the variation in stability of the DPPH radical after 120 min. The absorbance of DPPH radical in potassium biphthalate buffer (pH 4.0) decreased by 25% in methanol solution and by -45% in acetone solution. DPPH radical in sodium bicarbonate buffer (pH 7) was stable in an acetone system (less than 10% reduction), but an -30% decrease occurred in the absorbance in a methanol system. DPPH radical in potassium carbonate-potassium borate-potassium hydroxide buffer (pH 10) was stable in a methanol system (less than 10% reduction), but a decrease of -70% occurred in the absorbance in an acetone system. Thus, the stability of DPPH in pH buffer solution mainly depends on the types of buffer and solvent used. 

DEKTAL DEVELOPER KODAK FIXER KODAK SHORT STOP POTASSIUM ALUM POTASSIUM BICARBONATE POTASSIUM BICHROMATE POTASSIUM BORATE POTASSIUM BROMATE POTASSIUM BROMIDE POTASSIUM CARBONATE POTASSIUM CHROMATE POTASSIUM CHLORATE POTASSIUM CHLORIDE POTASSIUM CYANIDE POTASSIUM DICHROMATE POTASSIUM FERRICYANIDE POTASSIUM FERROCYANIDE POTASSIUM FLUORIDE POTASSIUM HYDROXIDE POTASSIUM NITRATE POTASSIUM PERBORATE POTASSIUM PERCHLORATE POTASSIUM PERMANGANATE. 10% POTASSIUM SULFATE PROPANE PROPANE GAS PLATING SOLUTIONS BRASS CADMIUM COPPER GOLD INDIUM LEAD NICKEL RHODIUM SILVER TIN ZINC... 

Phosphata Ester Oils (C) Potassium Bicarbonate IBI Potassium Borate IC) Potassium Bromids (C) Potassium Carbonate IS) Potassium Chlorate (C) Potassium Chloride (C) Potssium Chromate (SI Potassium Cyanide (C) Potassium Oichromate (S) Potassium Ferricyanide IS) Potassium Hydroxide (SI Potassium Hypochlorite IS) Potassium Nitrate (Cl Potassium Oxalate IS) Potassium Permanganate IS) Potassium Sulfate IC) Potassium Sulfite ( 1 Prtstone (C)... 

Potassium Acetate Potassium Acid Sulfate Potassium Acid Tartrate Potassium Antimonate Potassium Bicarbonate Potassium Bichromate Potassium Bisulfate Potassium Bisulfite Potassium Bitartrate Potassium Borate Potassium Bromate Potassium Bromide Potassium Carbonate Potassium Chlorate Potassium Chloride Potassium Chromate Potassium Cyanide Potassium Dichromate Potassium Ferricyanide Potassium Ferrocyanide Potassium Fluoride Potassium Hexacyanoferrate (III) Potassium Hydrogen Carbonate Potassium Hydrogen Sulfate Potassium Hydrogen Sulfite Potassium Hydroxide Potassium Hypochlorite Potassium Hyposulfite Potassium lodate Potassium Iodide Potassium Manganate Potassium Nitrate Potassium Perborate Potassium Perchlorate Potassium Permanganate Potassium Peroxydisulfate Potassium Persulfate... 

The composition of the builders in an alkaline cleaner is dependent on the metal substrate from which the soil is to be removed. For steel (qv) or stainless steel aggressive, ie, high pH, alkaline salts such as sodium or potassium hydroxide can be used as the main alkaline builder. For aluminum, zinc, brass, or tin plate, less aggressive (lower pH) builders such as sodium or potassium siUcates, mono- and diphosphates, borates, and bicarbonates are used. 

The cmde phthaUc anhydride is subjected to a thermal pretreatment or heat soak at atmospheric pressure to complete dehydration of traces of phthahc acid and to convert color bodies to higher boiling compounds that can be removed by distillation. The addition of chemicals during the heat soak promotes condensation reactions and shortens the time required for them. Use of potassium hydroxide and sodium nitrate, carbonate, bicarbonate, sulfate, or borate has been patented (30). Purification is by continuous vacuum distillation, as shown by two columns in Figure 1. The most troublesome impurity is phthahde (l(3)-isobenzofuranone), which is stmcturaHy similar to phthahc anhydride. Reactor and recovery conditions must be carefully chosen to minimize phthahde contamination (31). Phthahde [87-41-2] is also reduced by adding potassium hydroxide during the heat soak (30). 

The reactivity of titanium dioxide toward acid is dependent on the temperature to which it has been heated. Freshly precipitated titanium dioxide is soluble iu concentrated hydrochloric acid. However, titanium dioxide that has been heated to 900°C is almost iusoluble iu acids except hot concentrated sulfuric, iu which the solubiUty may be further iucreased by the addition of ammonium sulfate to raise the boiling poiut of the acid, and hydrofluoric acid. Similarly, titanium dioxide that has been calciued at 900°C is almost iusoluble iu aqueous alkahes but dissolves iu molten sodium or potassium hydroxide, carbouates, or borates. 

The poor efficiencies of coal-fired power plants in 1896 (2.6 percent on average compared with over forty percent one hundred years later) prompted W. W. Jacques to invent the high temperature (500°C to 600°C [900°F to 1100°F]) fuel cell, and then build a lOO-cell battery to produce electricity from coal combustion. The battery operated intermittently for six months, but with diminishing performance, the carbon dioxide generated and present in the air reacted with and consumed its molten potassium hydroxide electrolyte. In 1910, E. Bauer substituted molten salts (e.g., carbonates, silicates, and borates) and used molten silver as the oxygen electrode. Numerous molten salt batteiy systems have since evolved to handle peak loads in electric power plants, and for electric vehicle propulsion. Of particular note is the sodium and nickel chloride couple in a molten chloroalumi-nate salt electrolyte for electric vehicle propulsion. One special feature is the use of a semi-permeable aluminum oxide ceramic separator to prevent lithium ions from diffusing to the sodium electrode, but still allow the opposing flow of sodium ions. 

Dissolve the Potassium Citrate, calcium chloride and sodium borate in approximately 20 ml water. Apply heat if necessary to dissolve. Combine the surfactants, TEA, propylene glycol and ethyl alcohol. Add the Potassium Citrate, calcium chloride and sodium borate solution. Adjust the pH of the solution to B.O with TEA or dilute sodium hydroxide. Add the Protease. 

Fertilizers - [AMMONIA] (Vol2) -in bioremediation piOREMEDIATION] (Supplement) -blended [POTASSIUM COMPOUNDS] (Vol 19) -boron in [BORON COMPOUNDS - BORON OXIDES, BORIC ACID AND BORATES] (Vol 4) -cyanamidein [CYANAMIDES] (Vol 7) -lecithin in [LECITHIN] (Vol 15) -molybdenum compounds m [MOLYBDENUM AND COMPOUNDS] (Vol 16) -nitric acid m mfg [NITRIC ACID] (Vol 17) -potassium hydroxide mmfg of [POTASSIUM COMPOUNDS] (Vol 19) -radioactive tracers for [RADIOACTIVE TRACERS] (Vol 20) -role of H2 m production of [HYDROGEN] (Vol 13) -specialty liquid [POTASSIUM COMPOUNDS] (Vol 19) -tanks for [TANKS AND PRESSURE VESSELS] (Vol 23) -use of diatomite m [DIATOMITE] (Vol 8) -use of sulfur for [SULFUR] (Vol 23)... 

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