Potassium antimonate

Lead antimonate [13510-89-9] (Naples yellow), Pb2(Sb0 2> mol wt 993.07, d = 6.58g/cm, is an orange-yeUow powder that is insoluble in water and dilute acids, but very slightly soluble in hydrochloric acid. Lead antimonates are modifiers for ferroelectric lead titanates, pigments in oil-base paints, and colorants for glasses and glazes (see Colorants for ceramics). They are made by the reaction of lead nitrate and potassium antimonate solutions, followed by concentration and crystallization. 

The aqueous solution of 1 gm. of potassium antimonate in 100 oo. of boiling water should be neutral to litmus paper. 

Potassium antimonate (02m). Dissolve 10 5 g potassium antimonate, K[Sb(OH)6], in water and dilute the solution to 200 ml. Alternatively, dissolve 6-47 g antimony(V) oxide, Sb2Os, in 100 ml 1 1 hydrochloric acid and dilute the solution to 200 ml. Neither solution keeps well. 

Lithium antimonate, LiSb03,3H20.—The antimonate is precipitated in crystalline form on addition of potassium antimonate to a lithium salt in solution.7 Like the sodium salt, it is only slightly soluble in water. 

Sodium antimonate.—This substance is precipitated by the interaction of potassium antimonate and a concentrated solution of a sodium salt, its formation affording a means of testing for sodium. The white, amorphous salt may be regarded as the hydrated meta-antimonate, NaSb03,3 H20, or, since one molecule of water is expelled above 200° C., it may be considered a pyroantimonate, Na2H2Sb207,6H20.12 Its heat of formation from the elements is 346 4 Cal.13... 

The oxides and acids of antimony resemble those of arsenic, except that antimony in antimonic acid has coordination number 6, the formula of antimonic acid being HSb(OH)3. A solution of potassium antimonate, K+[Sb(OH)g], finds use as a test reagent for sodium ion sodium antimonate, NaSb(OH)3, one of the very few sodium salts with slight solubility in water (about 0.03 g per 100 g), is precipitated. The. antimonate ion condenses to larger complexes when heated this condensation may ultimately lead to macromolecular structures, such as... 

Diallyl Phthalate 1333-78-4 Potassium Antimonate 13823-29-5 Thorium Nitrate... 

Derivation Interaction of solutions of lead nitrate and potassium antimonate, concentration, and crystallization. 

Figure 10 Structures of selected (organo)antimony compounds F10-1 potassium antimonate F10-2 potassium antimony tartrate (PAT). Compounds FI 0-1 and FI 0-2 have been wideiy used as inorganic antimony substrates in biomethyiation studies. Some possible produots (FI 0-3-F10-5) arise from oxidation of biogenicaiiy produced trimethyistibine (MesSb). Based on Craig, P. J. Forster, S. A. Jenkins, R. O. Lawson, G. Miller, D. Ostah, U.Appl. Organomet Chem. 2001, 15, 527-532.

Potassium antimonate (reagent for sodium). BoU 22 g of potassium antimonate with 1 L of water untU nearly aU of the salt has dissolved, cool quickly, and add 35 mb of 10% potassium hydroxide. FUter after standing overnight. 

Bondaroy s YeHow. An antimony yellow developed by Fourgeroux de Bondaroy in 1766 white lead, 12 parts potassium antimonate, 3 parts alum, 1 part sal ammoniac, 1 part. 

Standards. Antimony(//f) potassium tartrate (33393 g) is dissolved in 1 L of pure water to make a 0.01 mol/L stock standard solution. This solution is stable for several months. The antimony(F) standard is prepared by dissolving 2.7190g of potassium antimonate(V) (KSb(OH)6 - Vi H2O) in dilute hydrochloric acid and diluting to a final volume of 1L to make a solution of ca. 0.01 mol/L concentration. This solution should be calibrated (after further dilution) against the Sb(//7) standard by standard flame atomic absorption tech-... 

Dissolve 1 g of picric acid in 100 mL of distilled water. Potassium antimonate (reagent for sodium). Boil 22 g of potassium antimonate with 1 L of distilled water until nearly 2J1 of the salt has dissolved, cool quickly, and add 35 mL of 10% (mass/ mass) potassium hydroxide. Filter after standing overnight. Potassium-cadmium iodide (Marme s reagent for alkaloids). Add 2 g of cadmium (11) chloride to a boiling solution of 4 g of potassium iodide in 12 mL of distilled water, and then mix with 12 mL of saturated aqueous potassium iodide solution. Potassium hydroxide (for CO absorption). Dissolve 360 g of potassium hydroxide in distilled water and dilute to 1 L. Potassium iodide — mercuric iodide (Brucke s reagent for proteins). Dissolve 50 g of potassium iodide in 500 mL of distilled water, and saturate with mercury (II) iodide (about 120 g). Dilute to 1 L with distilled water. 

Potassium Antimonate 22 9 Excellent resistance Boltaron 1050 Empire Plastics... 

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... 

Weigh out accurately about 0.4 g of purest potassium antimonate(V), add 30 cm cone. HCl then add a large excess of K1 solution in a distilling flask connected to 2 U tubes containing dilute KI. Heat to boiling until all the iodine passes to the U tubes. Combine their contents and rinsings in a conical flask. Titrate with standard 0.05 M thiosulphate solution until the solution is straw yellow. Add 2 cm of fresh starch solution and continue titration until the blue colour disappears for 1 minute. Repeat to obtain concordant results and calculate from the average titre, [Sb(V)] in mol dm. ... 

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