Antimony compounds, vapor pressure

Measurements were made of the saturation vapor pressure of solid antimony and bismuth tellurides and of bismuth selenide. It was found that the evaporation of these compounds was of a dissociative nature, in accordance with the following equations... 

Bolling point, C 1B3 Melting point, °C 114 Relative density (water=1) 4.93 Relative vapordensity(air 1) 8.6 Vapor pressure, mm Hg at 20 C 0.21 Solubiiityinwater.g/IOOmI 0.03 Relative molecular mass 2. 8 Qrossformula 1, DARK PURPLE CRYSTALS OR BLACK-GRAY FLAKES WTIH PUNGENT ODOR Vapor mixes readily with air. Reacts with anhydrous ammonia to form shock-sensitive compounds. Reacts violently wifo reducing agents, sulfur, antimony, alkali metals, metal powders and (Bosphorus, with risk of fire and explosion. ... 

Arsenic is a gray crystalline solid that does not melt at atmospheric pressure but simply volatilizes to give a dense, malodorous yellow vapor. Its main use as an element is to harden lead-antimony alloys, for example, those in storage batteries or lead shot. Arsenic compounds are highly toxic hence, many have been used as potent herbicides and insecticides. 

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