Aluminum phosphates

The aluminum phosphate pigments give good adhesion of the paint film to the metallic substrate. 

Zinc aluminum phosphate K-White 105 (Teikoku Kako, Japan) Heucophos ZPA (Dr. H. Heubach, Germany) Phosphinal PZ04 (SNCZ, France). 

Aluminum triphosphate K-White 82, -84 (Teikoku Kako, Japan). 

Property Aluminum triphosphate (commercial product 1 K-White 82) [5.73] Aluminum triphosphate (commercial product 2 K-White 84) [5.73] Aluminum zinc phosphate hydrate (commercial product 3 Heucophos ZPA, Phosphinal PZ 04) [5.68], [5.70] 

Chromium phosphate [16453-74-0], CrP04-3 H20, Mr 201.0, is produced from chromium(III) salts and alkali phosphates. The physical and chemical properties are listed in Table 40 important areas of use are given in Table 39, [5.72], 

Elemental composition A1 52.91%, 0 47.08%. A1 may be anlayzed by atomic absorption or emission spectrophotometry or by colorimetric methods after acid digestion. Different forms of alumina may be identified by x-ray diffraction analysis. The X-ray crystallogaphic data for the mineral corundum are as follows  

Chronic inhalation of AI2O3 dusts may cause lung damage. 

The compound occurs in nature as the mineral, berlinite. Also, it occurs in nature in minerals, amblygonite, [NaAl(P04)(0H)j augelite, [Al2(P04)(0H)3] lazulite, [(Mg,Fe)Al2(P04)2(0H)2] variscite [(Al,Fe3+)(P04) 2H20] andwavel-lite, [Al3(0H)3 (P04)2 5H20]. It is used as flux for ceramics as cement in combination with calcium sulfate and sodium silicate and in the manufacture of special glasses. It is also used in dried gel and therapeutically as an antacid. 

White powdery solid (rhombic plate) the mineral berhnite (AIPO4) has hexagonal quartz-like structure refractive index 1.546 mp 1,500°C density 2.566 g/cu insoluble in water and alcohol Ksp 9.83x10 ° very slightly soluble in HCl or HNO3. 

It is prepared by treating sodium aluminate with phosphoric acid. 

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Table 6 Hsts the leavening acids and the corresponding rates of reaction. The leavening acids most frequently used iaclude potassium acid tartrate, sodium aluminum sulfate, 5-gluconolactone, and ortho- and pyrophosphates. The phosphates iaclude calcium phosphate [7758-23-8] CaHPO, sodium aluminum phosphate, and sodium acid pyrophosphate (66).

Anhydrous monocalcium phosphate, Ca(H2PObe made in a pan mixer from concentrated phosphoric acid and lime. The high heat of reaction furnishes essentially all the necessary thermal input and subsequent drying is minimized. A small amount of aluminum phosphate or a mixture of sodium and potassium phosphates is added in the form of proprietary stabilizers for coating the particles. Heat treatment converts the coating to a protective polyphosphate (19). 

Sodium alumiaate is an effective precipitant for soluble phosphate ia sewage and is especially useful ia wastewater having low alkaliaity (20,21). Sodium alumiaate hydrolyzes ia water to Al(OH)2 and Al" which precipitate soluble phosphate as aluminum phosphate [7784-30-7], AlPO. Sodium alumiaate has also been described as an effective aid for the removal of fluorides from some iadustrial waste waters (22). Combiaations of sodium alumiaate and other chemicals are being used to improve the detackification of paint particles ia water from spray-painting operations (23). 

Direct ammonolysis involving dehydratioa catalysts is geaerahy ma at higher temperatures (300—500°C) and at about the same pressure as reductive ammonolysis. Many catalysts are active, including aluminas, siUca, titanium dioxide [13463-67-7], and aluminum phosphate [7784-30-7] (41—43). Yields are acceptable (>80%), and coking and nitrile formation are negligible. However, Htfle control is possible over the composition of the mixture of primary and secondary amines that can be obtained. 

A number of acidic phosphates which vary in their rate of reaction are available for use in a wide variety of bakery appHcations. These acids, which include monocalcium phosphate, sodium aluminum phosphate, and sodium acid pyrophosphate, release carbon dioxide at a controlled rate to give a certain fraction prior to baking the remaining fraction is released at a specific time during baking. Controlled releasing of carbon dioxide at the time it is needed can also be achieved by a mixture of different types of leavening acids. 

DKP = dipotassium phosphate Poly = polyphosphate and SALP = sodium aluminum phosphate. Other terms may be found in the text. 

Inorganic reactions in the soil interstitial waters also influence dissolved P concentrations. These reactions include the dissolution or precipitation of P-containing minerals or the adsorption and desorption of P onto and from mineral surfaces. As discussed above, the inorganic reactivity of phosphate is strongly dependent on pH. In alkaline systems, apatite solubility should limit groundwater phosphate whereas in acidic soils, aluminum phosphates should dominate. Adsorption of phosphate onto mineral surfaces, such as iron or aluminum oxyhydroxides and clays, is favored by low solution pH and may influence soil interstitial water concentrations. Phosphorus will be exchanged between organic materials, soil inter-... 

The iron aluminum phosphate catalyst used in this study was prepared by a sol-gel... 

Aluminum Phosphate Ester Salts for Gelling Organic Liquids... 

D. A. Huddleston. Liquid aluminum phosphate salt gelling agent. Patent US 5110485,1992. 

Turquoise Hydrated copper aluminum phosphate Blue 2.7... 

Suspension of water soluble solids in oil can be achieved by a variety of chemical additives. Chemical suspension additives that have been suggested include alkyl mercaptophosphonic acids(174), organophylic clay plus hydroxypropyl cellulose(175), polyols(176), aluminum stearate(177), organophylic clay plus surfactant(178-181), aluminum phosphate esters(182), and acrylate copolymers(183-184). 

B (a) Possible products are sodium chloride, NaCl, which is soluble, and aluminum phosphate, A1P04, which is insoluble. The net ionic equation is ... 

Walker A process for partially oxidizing natural gas or LPG, forming a mixture of methanol, formaldehyde, and acetaldehyde. Air is the oxidant and aluminum phosphate the catalyst. Invented by J. C. Walker in the 1920s and operated by the Cities Service Corporation, OK, in the 1950s. 

The structure of UCSB-8 viewed along the 100 direction is shown in Fig. 21. There are two-dimensional (2D) channels with 12-MR structures (7.7 x 7.5 A) and a ID 8-MR channel that intersects at a cage (20 x 20 x 15 A). The composition for this structure is AI32C032P64O256, but it has also been prepared as Mn, Mg, or Zn aluminum phosphates. The UCSB-8 structure was synthesized using 1,9-diami-nononane as the SDA. 

These structures are unique for several reasons. First, they represent three new multidimensional 12-MR systems, which are rare even among zeolites. Second, the amount of framework substitution by metals such as Mn2+ and Mg2+ was unknown prior to this series. Also, the ease of forming both gallium and aluminum phosphates appear to be comparable. Finally, it would appear the charge-matching approach has proven to be a successful strategy for the synthesis of new molecular sieves. It is not clear whether these materials are thermally or hydrothermally stable but they do represent novel pore structures that should impart some unusual properties. 

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