Kaolin light

Note that the PhEur 2005 contains a monograph on heavy kaolin (kaolinum ponderosum). The BP 2004 in addition to the monograph for heavy kaolin also contains monographs for light kaolin (natural) and light kaolin. 

The USP 28 describes kaolin as a native hydrated aluminum silicate, powdered and freed from gritty particles by elutriation. The BP 2004 similarly describes light kaolin but additionally states that it contains a suitable dispersing agent. Light kaolin (natural) BP contains no dispersing agent. Heavy kaolin is described in the BP 2004 and PhEur 2005 as a purified, natural hydrated aluminum silicate of variable composition. The JP 2001 describes kaolin as a native hydrous aluminum silicate. 

Mixture of Kaolin, B.P,C, Contains approximately 13 7 per cent of light kaolin and 4 6 per cent each of magnesium carbonate and sodiiim bicarbonate in peppermint water. 

Compound Powder of Kaolin, B.P.C, Consists of 3 parts of light kaolin, 2 parts of heavy magnesium carbonate and 1 part of sodium bicarbonate. For assay of the ingredients see Compound Powder of Magnesium Carbonate below, adjusting the quantities used proportionally to the formula. 

Compound Powder of Magnesium Carbonate, B.P.C, Consists of 33 3 per cent each of magnesium carbonate and calcium carbonate and 25 per cent of sodium bicarbonate with light kaolin. 

The slime, consisting of kaolin, fine quart2, and feldspar, is sometimes used as is after being dewatered. This material may be used in the manufacture of light-colored brick or may be further processed to produce a high grade ceramic kaolin used in the manufacture of dinnerware, electrical porcelain, or sanitary-ware (see Ceramics). Floes of kaolin may be sold in bulk from the drier or pulveri2ed and sold in a powdered form. 

Tne insulating firebrick is a class of brick that consists of a highly porous fire clay or kaolin. Such bricks are light in weight (about one-half to one-sixth of the weight of fireclay), low in thermal conductivity, and yet sufficiently resistant to temperature to be used successbilly on... 

Examples Magnesium Trisilicate, Bentonite, Barium Sulphate, Light and Heavy Kaolin. 

This consists of zinc oxide in the form of a light, odourless, white powder. It may contain, as impurities, lead carbonate and sulphate and oxides of iron, cadmium and arsenic, and may be adulterated with chalk, barium sulphate and clay (kaolin). Besides the technical tests already described (see General Methods), the following tests and determinations are made. 

In the cosmetics industry, finely dispersed fillers, are used as abrasives (toothpaste, scrub cosmetics), for their light reflecting properties (sunscreen lotions), for their dehydrating and astringent effect (kaolin in face masks), for their cooling effect (zinc oxide in sunburn lotion), and as cosmetic color additives and extenders (makeup). The many different applications require an extensive range of filler properties. 

Stabilization and destabilization studies on kaolin suspensions were performed in our group by means of various electrokinetic methods to follow the adsorption process of differently charged polyelectrolytes. The polyelectrolytes used were polycations such as the branched free polybase polyethyl-eneimine (PEI) and the linear PD ADM AC, and Na-poly aery late as polyanion, whereas the polycations are of different charge density. In Figures 4-7 results of electrophoretic light scattering experiments (Zetasizer 4, Malvern) of 0.05% (w/w) kaolin suspensions are presented (compare Ref. 24). 

Aggregate, alumiiia (alumiiium oxide), cement raw mix, clay, dolomite, fluorspar, kaolin, light weight aggregate, lime, limestone, magnesia (magnesium oxide), pigments, silica (silicon dioxide), silica fume Products... 

Surfactant adsorption on the reservoir surface is another important factor to be considered when using foams in EOR processes is discussed in [258]. Adsorption experiments with surfactants of different structures were performed on cores of a number of materials (quartz, sandstones, kaolin, calcite and others), both clean and modified (impregnated) with hydrocarbons of various structure ( light oil, high-viscosity oil, asphaltenes). Minimum adsorption, as well as maximum oil recovery based was observed when using amphoteric surfactants as well as surfactant mixtures, e.g. diphenyl ether disulfonate - a-olefin sulfonate (DPES-AOS). 

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