Borax Class

Claisse40 has made a comprehensive attack on mineral analysis. He realized that fusion to give a glass disk could be used at once to remove Class II deviations. (7.8) and to give samples in which a (Equation 6-6) varies very little from one sample to another. Accordingly, he developed the fusion of minerals (other than sulfide minerals) with fluxes based on borax (100 mg of sample to 10 grams of borax) when graphite or sulfides are present, oxidation must precede the borax fusion. Internal standards or materials intended to fix the value of a may be added before... 

In his Elective Attractions, Torbern Bergman stated emphatically that the so-called sedative salt is not a salt but an acid. The substance commonly called sedative salt, said he, is more nearly allied to acids than any other class of bodies. It reddens turnsole and saturates alkalis and soluble earths. It also dissolves various metals, and has other properties which shew its acid nature, and it seems better entitled to the name of acid of borax than to that of sedative salt (66). 

Borax pentahydrate is an effective flame retardant for wood/cellulosic materials in terms of surface flammability. However, due to the Na20 moiety, it can promote smoldering combustion in cellulose. Thus, in cellulosic material and wood products, it is commonly used in combination with boric acid, which is an effective smoldering inhibitor. For example, the treatment of wood fibers with a partially dissolved boric acid and borax pentahydrate slurry (-1.75% by wt. of boron) results in Medium Density Fiberboard (MDF) that is claimed to pass the ASTM E-84 Class 1 surface flammability standard.12 The additional examples of using borax pentahydrate and boric acid combination are presented in Section 9.2.2.1. 

Other Transient Interactions. The PVA/borax example dealt with the effects of surface exposure of a two-component polymer system to a wetting liquid. We discovered a practical example of this class of phenomena in a plasticized poly (vinyl chloride) (PVC) system. A peculiar plasticizer (tetraethyl methylene bisphosphonate) for PVC has been found (6) which has the unusual property of exuding out of PVC immediately upon exposure to high humidity. The plasticizer quickly re-enters the resin when the humidity is reduced. A film of 60% resin and 40% plasticizer was solvent cast from tetrahydrofuran onto an impedometer bar and was subjected to sudden high humidity exposure. 

BORATES Boron and Oxygen Borax sodium, boron, hydrogen CLEANSER, source of element BORON to improve heat resistance of CLASS... 

ZIRCAT (7440-67-7) Finely divided material is spontaneously flammable in air may ignite and continue to bum under water. Violent reactions with oxidizers, alkali hydroxides, alkali metals (and their compounds), carbon tetrachloride, cupric oxide, lead, lead oxide, lead peroxide (combined material can burn explosively, and is sensitive to friction and static electricity), nitryl fluoride, oxygen difluoride, phosphoms, potassium, potassium compounds (potassium chlorate, potassium nitrate), sodium borate, sodium hydroxide. Explodes if mixed with hydrated borax when heated. Contact with lithium chromate may cause explosion above 752°F/450°C. Forms explosive mixture with potassium chlorate. Dusts of zirconium ignite and explode in a carbon dioxide atmosphere. Contact with ammonium-V-nitrosophenylhydroxylamine above 104°F/40°C forms an explosive material. Incompatible with boron, carbon, nitrogen, halogens, lead, platinum, potassium nitrate. In case of fire, use approved Class D extinguishers or smothering quantities of dry sand, crushed limestone, clay. 

We are interested in vanadoborate cluster materials both as precursors to porous solids and as a new class of molecular magnets. We have synthesized a variety of vanadoborate cluster compounds 1-7, primarily by use of two different synthetic routes. The first involves hydrothermal synthesis, using sodium tetraborate ( borax ) as the boron source and the second uses molten boric acid as the reaction medium. In general anionic clusters are found. Herein we report that these have novel electronic and bonding arangements which affect their magnetic behaviour and also that they may be cross-linked together by metal centers such as Cd to form stable microporous phases. 

The name enzyme now used for unorganised ferments in general, was adopted by Willy Kiihne in 1878 as a name not intended to imply any particular hypothesis it merely states that eV vfir] (in yeast) something occurs which exerts this or that activity, which is supposed to belong to the class called fermentative , and he extended its use to other unorganised ferments. Dumas, using yeast and diastase, disproved experimentally both Liebig s theory and Berzelius s catalytic theory, and favoured Pasteur s theory. He found that borax arrests alcoholic fermentation. 

This reaction has an equilibrium constant of 18 value of approximately 1.25) at 40°C. This means in effect that a 1 wt% (0.025 mol/L) solution of borax, capable of releasing approximately 0.1 mol/L of metaborate ions into solution (with pH adjusted to 10) is able to sequester approximately half of the calcium ion content of a solution. Borates are known for their use as water softeners in detergent and household cleaning products. Although they are not classed as strong sequestrants, they do exhibit extensive zones of miscibility in mixed borate/hardness ion solutions, a fact that makes them attractive for ASP flooding. 

Class separation 75 25 EtOH/H20 (C )j) anionics 1 8 1 CH2Cl2/MeOH (Si02) anionics 2 8 2 1 acetone/THF/MeOH (Si02) nonionics 8 2 EtOH/2% borax (C g) cationics 8 1 0.75 CH2Cl2/MeOH/HOAc (Si02) sulfonates and ethoxylate oligomers 14 6 1 MlBK/PrOH/0.1 M HOAc (Si02)... 

As briefly mentioned above, some prior work on alucones has been reported. One distinguishing feature of this class of materials, in contrast to their relatives the alumoxanes, is the presence of not only aluminum and oxygen atoms in the network backbone, but carbon atoms as well. Examples given in the U. S. Borax technical reports (Figs. 1 - 3) demonstrate this incumbent feature. Alumoxanes, and in particular methylalumoxane (MAO), lack this salient organic component of the polymer frame (10). Their basic repeat unit is f(R)Al-<5x9 however, it is known now that such a simplistic formula is not representative of the magnitude of the components present in such compositions. Ra er, clusters built up with Al-0-A1 linkages are observed in MAO (11). 

---