Antimonic acid antimony

SYNS ACETIC ACID, TRIANHYDRIDE with ANTIMONIC ACID ANTIMONY(III) ACETATE OCTAN ANTIMONITY (CZECH)... 

Antimony trioxide is insoluble in organic solvents and only very slightly soluble in water. The compound does form a number of hydrates of indefinite composition which are related to the hypothetical antimonic(III) acid (antimonous acid). In acidic solution antimony trioxide dissolves to form a complex series of polyantimonic(III) acids freshly precipitated antimony trioxide dissolves in strongly basic solutions with the formation of the antimonate ion [29872-00-2] Sb(OH) , as well as more complex species. Addition of suitable metal ions to these solutions permits formation of salts. Other derivatives are made by heating antimony trioxide with appropriate metal oxides or carbonates. 

Antimon-saure, /. antimonic acid, -saureanhy-drid, n. antimonic anhydride, antimony pent-oxide. -silber, n. antimonial silver, dyscrasite. -silberblende,/. pyrargyrite. -silberglanz, m. stephanite. -spiegel, m. antimony mirror, -sulfid, n. antimony sulfide, specif, antimony pentasulfide, antimony(V) sulfide, -sulfiir, n. antimony trisulfide, antimony(III) sulfide, -yerblndung,/. antimony compound, -wasser--stoff, m. antimony hydride, stibine. -weiss, n. antimony white (Sb Oa). -zinnober, m. kermes mineral. 

Brom-. of or combined with bromine bromo- (as Brombenzoeadure, bromobenzoic acid) bromide of (as Brombaryum, barium bromide). -ammoD, tn., ammonium, n. ammonium bromide, -antimon, n. antimony bromide, -arsen, n., -arsem k, tn. arsem c bromide. ather, tn. ethyl bromide, -athyl, n. ethyl bromide. athylen, n. ethylene bromide, athyiformin, n. Pharm.) bromalin. -atom, n. bromine atom, -baryum, n. barium bromide. beere, /. blackberry, brombeerrot, a. blackberry ed. 

Chlor-. of or combined with chlorine, chloro (as Chlorbenzoeadure, chlorobenzoic acid), chloride of (as Chlorzink, zinc chloride), chlorahnlich, a. like chlorine, chlorinous. Chlor-alaun, m. chloralum, -alkalien, n.pl. alkali-metal chlorides, -allyl, n, allyl chloride, -aluminium, n. aluminum chloride, -ammon, m., -ammonium, n. ammonium chloride, -amyl, n, amyl chloride, -antimon, n, antimony chloride, -arsenlk, n. chloride of arsenic, -arsenikldsung, /, (Pkarm.) solution of arsenious add, hydrochloric solution of arsenic, -arsinkampfstoff, m. chlorodi-phenylarsine, adamsite, chlorartig, a. like chlorine, chlorinous,... 

Antimonate, hexafluoro-, 3, 276 Antimonate, tris(cthyl dithioearbonate)-electron pair, 1, 37 Antimonates, 3, 265 Antimonic acids, 3, 265 Antimony, 3, 237-294 biology, 3,277 carcinogenicity, 3, 278 coordination number, 3, 256 determination... 

The reason for such a behaviour of arsenic acid is that arsenic is a member of the group 5A elements in the periodic table. Phosphorus and antimony are also group 5 elements and are known to be chemically similar to arsenic. On this basis [8,9], the antimonic acids were found to be poor cassiterite collectors. The alkyl phosphonic acids were not selective collectors. The ethylphenylene phosphonic acid was found to produce similar or better results compared to /7-tolyl arsonic acid. The structural formula for phosphonic acid (Figure 21.5) is similar to that of /7-tolyl arsonic acid but arsenic was replaced with phosphoms. The styrene phosphonic acid radicals are C6H5-CH-CH and p-ethylphenylene CH3-CH2-C6H4. 

Antimonic acid, 3 59, 65 Antimonin (stibabenzene), 3 72 Antimonious acid, 3 43 Antimonite, 3 43... 

Formula 86205 MW 323.50 always occurs in hydrated form, 86205 nH20 commercial product is either hydrated 86205 or -86204 8ynonyms antimony(V) oxide antimonic acid (hydrated oxide)... 

Figure 2 shows the structure of this sensor which is similar to that of the potentiometric sensor reported earlier (10). The only difference is that in this sensor a short circuit current between the sensing electrode and the counter electrode is measured with an ammeter. The proton conductor, antimonic acid (Sb205 2H20), was prepared from antimony trioxide and hydrogen peroxide according to a method described elsewhere (7,14). The sample powder was mixed with... 

SYNS ANTIMONY LACTATE. soUd (DOT) LACTIC ACID, ANTIMONY SALT PROPANOIC ACID, 2-HYDROXY-, TRIANHYDRIDE with ANTIMONIC ACID (H3Sb03) (9CI)... 

ANTIMOINE FLUORURE (FRENCH) see AQEOOO ANTIMOINE (TRICHLORURE d") see AQC500 ANTIMOL see SFBOOO ANTIMONIAL SAFFRON see AQF500 ANTIMONIC ACID see AQF750 ANTIMONIC CHLORIDE see AQDOOO ANTIMONIC OXIDE see AQF750 ANTIMONIC SULFIDE see AQF500 ANTIMONIO (PENTACLORURO DI) (ITALIAN) see AQDOOO... 

Four types of hydrous antimony oxide (antimonic acid), the amorphous (A-SbA), the glassy (G-SbA), the cubic (C-SbA), and the monoclinic (M-SbA) are known so far [138]. Both the A-SbA and G-SbA affect the selectivity sequence Li" < Na" < K" " < Rb+ < Cs", while the selectivity sequence of C-SbA is unusual with Li" " K+ < Cs < Rb" Na" " for micro amounts in acid media (Fig. 19). The degree of crystallinity of a-ZrP strongly influences its ion-exchange behavior as mentioned earlier. The pH versus base added plots for a-ZrP with different crystallinity are shown in Fig. 13. It is seen that each increase in acid concentration at a fixed reflux time is reflected in the shape of the curves. The titration curves with the most well-defined plateaus were obtained with the most highly crystalline samples [126]. 

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... 

Antimony, its properties and uses—type metal, other alloyS. Stibnite, SboSg. Compounds of antimony antimonic acid, potassium antimouate. sodium antimo-... 

The free oxy-acids of antimony are even less stable than those of arsenic. Various hydrated forms of the trioxide and pentoxide have been described as antimonious and antimonic acids, but their structures are unknown. Finite oxy-ions SbO ", SbOJ, and Sb207 do not exist. Compounds formerly described as ortho-, meta-, and pyro-antimonates all contain Sb " octahedrally coordinated by oxygen, either as Sb(OH)g ions, in compounds which were once described as hydrated meta- or pyro-antimonates, or as SbOg groups in the compounds of type (b), which are best described as complex oxides, and not as antimonates, for reasons given later. 

Sodium antimonate must be used with halogen containing compounds for it to act as effective fire retardant. The source of chlorine may come from polymer (e.g., PVC, chlorinated rubber, etc.) or other chlorinated or brominated material. The benefits of using sodium antimonate over antimony oxide include its low tinting strength and the acid scavenging capability. For these reasons, it is used in semi-opaque or dark colored materials and in polymers such as polyesters and polycarbonates which are acid sensitive. 

The Sb Mossbauer parameters (79) of tin-antimony oxides calcined at 600°C were related to the preparative procedure. The white precipitates, formed in alkaline media that contain hydrated tin(IV) and antimony(V) species, were considered to dehydrate after 16-hr calcination at 600°C to give blue, poorly crystalline, highly defective rutile type solids. The Mossbauer spectra revealed the presence of tin(IV), antimony(V), and anti-mony(III) species in oxygen environments and were consistent with the dehydration process inducing the reduction of antimony(V) as is observed in the pyrolysis of antimonic acid (26) and the transformation of the tin(IV) hydroxide gel to tin(IV) oxide (30). The coexistence of random arrays of such units in a noncrystalline monophasic solid is consistent with the X-ray diffraction study (72) that described these materials as single-phase amorphous solids. 

The introduction of tartar emetic (1) in 1912 for the treatment of mucocutaneous leishmaniasis heralded a new era in the treatment of the disease, which was followed by the investigation of a number of other antimonials for clinical efficacy in leishmaniasis. This led to the discovery of a number of fivevalent antimony compounds, that have laboratory and clinical efficacy and are better tolerated than tartar emetic. These included sodium stibogluconate (2), meglumine antimoniate (3), derivatives of stibanilic acid (stibamine, 4), stibacetin (5), ethyl stibamine (a mixture of 4, 5, antimonic acid and Et2NH in a molar ratio of 1 2 1 3 with 41-44% of fivevalent antimony content) and urea stibamine (6) have been used to treat kala-azar, cutaneous and mucocutaneous leishmaniasis in man. 

Antimony Pen (oxide. Antimonic oxide tibic anhydride antimonic acid , OgSb2 mol wi 323,52. O 24.73%, Sb 75-27%. Sb205- Prepn Schenk in Handbook of Preparative Inorganic Chemistry, vol, 1, G. Brauer, Ed. (Academic Press, New York, 2nd ed, 1963) p 616. 

Antimony Acids.—The normal antimonous acid, HsSbOs, corresponding to HjPOj, is unknown but the series of antimonie acids ortho—HaSbO, pyro—HiSbaOi, andmeta—HSbOs, is complete, either in the form of salts, or in that of the free acids. There also exists, in its sodium salt, a derivative of the lacking-antimonous acid metantimonous acid, HSbOa. 

Properties of the Vermilion of Antimony.—The vermilion of antimony is in the state of a very fine powder, without taste or smell, and is insoluble in water, alcohol, or essential oils. It is but little acted upon by the weak acids, even when concentrated, or by the powerful inorganic acids which have been diluted with water. It stands the latter acids better than the ordinary sulphide of antimony. Concentrated and hot hydrochloric acid dissolves it, with formation of sulphuretted hydrogen and chloride of antimony. Nitric acid oxidises it, with the production of sulphuric and antimonic acids. The vermilion of antimony is not sensibly acted upon by ammonia or the alkaline carbonates on the other hand, the powerful caustic alkalies, such as potash, soda, baryta, strontia, and lime, decompose it and form combinations which are colourless, or nearly so. The colour is therefore destroyed consequently this pigment should not be mixed with alkaline substances. A high temperature blackens it, and should the heat be such as to melt it, it becomes ordinary svilphide of antimony. 

---