Reaction with antimony oxide

Interference with the antimony-halogen reaction will affect the flame retardancy of the polymer. For example, metal cations from color pigments or an inert filler such as calcium carbonate or talc may lead to the formation of stable metal halides, rendering the halogen unavailable for reaction with antimony oxide. The result is that neither the halogen nor the antimony is transported into the vapor zone. Silicones have also been shown to interfere with the flame retardant action of halogenated flame retardants. 

As with the previous element, the dangerous reactions of antimony derivatives are linked to the behaviour of the anion. The element is reducing and apart from its interaction with two metals it gives rise to dangerous reactions with strong oxidants. 

SAFETY PROFILE Moderately toxic by intraperitoneal route. See also ANTIMONY COMPOUNDS and SULFIDES. Flammable when exposed to heat or by chemical reaction with powerful oxidizers. Use water to fight fire. Moderately explosive when shocked or by spontaneous chemical reaction in contact with powerful oxidizers. When heated to decomposition or on contact with acid or acid fumes it emits highly toxic fumes of oxides of sulfur and antimony. Incompatible with water or steam to produce toxic and flammable vapors and with oxidizers, e.g., Ag(C103)2, HCIO3,... 

SAFETY PROFILE Poison by skin contact and subcutaneous routes. Human systemic effects by skin contact with very small amounts primary irritant, corrosive. Explodes on contact with potassium, white phosphorus. Ignites on contact with antimony. Vigorous reaction with metal oxides (e.g., silver oxide, lead(II) oxide, lead(IV) oxide, lead(II)(IV) oxide). When heated to decomposition it emits very toxic fumes of Cl" and Se. See also SELENIUM COMPOUNDS and CHLORIDES. 

Oxidation Reactions with Antimony Pentafluoride. An appropriate amount of the finely powdered element is introduced into A (Fig. 

Many heterogeneous catalytic systems have been developed and applied to ammoxidation reactions. Vanadium-containing oxides are preferred as supported, bulk, or multicomponent catalysts for the ammoxidation of aromatic or heteroaromatic compounds. Favored supports are titanium oxide (anatase) [18,19], zirconium oxide [20,21], tin oxide [22], or mixed supports such as titanium-tin oxide [23]. Catalytic systems used as bulk materials include vanadium-phosphorus oxides [24], crystalline vanadium phosphates [25], and vanadium oxide combined with antimony oxide [26] or molybdenum oxide [27]. Other important catalysts include multicomponent systems such as KNiCoFeBiPMoO c on silica... 

AMMONIUM DIHYDROGEN PHOSPHATE (7783-28-0) Contact with air slowly forms anhydrous ammonia. Contact with caustics forms anhydrous ammonia gas. Violent reaction with strong oxidizers, potassium chlorate, strong bases. Reacts with antimony(V) pentafluoride, lead diacetate, magnesimn, silver nitrate, zinc acetate. AMMONIUM DISULFATO-NICKELATE (II) (15699-18-0) NiS04(NH4)2S04 jHj0 A weak oxidizer. Aqueous solution is acidic. Reacts violently with carbon dust, potassium, finely divided... 

ANTIMONY(III) OXIDE (1309-64-4) (1309-64-4) OjSbj Ignites and bums in heated air above 420°F/215°C. Violent reaction with strong oxidizers bromine trifluoride. Reacts with chlorinated mbber, alcohols/glycols, organic and a-hydroxy acids (fruit acids), o-dihydric phenols polyethylene glycol and other polyhydroxy compounds. 

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