Celebrate it by recognizing extraterrestrial phosphine’s potential contribution to life. The theme of this year’s National Chemistry Week (which begins today) is “ Chemistry Is Out of This World”. They then bombarded the ices with high-energy electrons (typical of those found in space) to produce several phosphorus oxyacids, including some with the same phosphorus oxidation state that exists in DNA, ATP, and other important biomolecules. Kaiser at the University of Hawaii at Manoa (Honolulu) and his colleagues there and in Taiwan and France simulated ices found in space by combining phosphine, carbon dioxide, water, and oxygen at near–absolute zero temperatures. But recent findings indicate that its presence in outer space may have had a key role in the beginnings of life. The hazard information box shows that phosphine is dangerous in several ways on Earth. Thus, whereas ammonia is completely miscible in water, the aqueous solubility of phosphine is very low. The industrial product is normally shipped as liquefied gas.Īlthough phosphine’s molecular structure is analogous to that of ammonia, the 3d orbital of its phosphorus atom interacts with its hydrogen atoms to reduce its ability to hydrogen bond. Phosphine is made industrially from white phosphorus by hydrolysis with an alkali metal hydroxide or an aqueous acid–catalyzed disproportionation reaction. Strontium hydride is an inorganic compound with a chemical formula SrH 2. reaction Hazards GHS labelling: Pictograms. The earliest reported preparation was made by Antoine Lavoisier’s student Philippe Gengembre in the late 18th century. Molar mass: 89.64 Appearance white crystal: Solubility in water. See also our theoretical yield calculator for chemical reactions (probably your next stop to finish the problem set). Phosphine is formed naturally via the anaerobic decay of phosphorus-containing organic matter. The molar mass of CaH2 (Calcium hydride) is: 42.094 grams/mol. In any case, pure phosphine is actually odorless an impurity, diphosphane (P 2H 4), is responsible for its foul scent. Some people think it smells like rotting fish it reminds others of the odor of garlic. Phosphine, the simplest phosphorus hydride, is a colorless and extremely toxic gas.
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