Phosphorus-sulphur

Trichloroethanoic acid, CCI3COOH. A crystalline solid which rapidly absorbs water vapour m.p. 58°C, b.p. 196-5" C. Manufactured by the action of chlorine on ethanoic acid at 160°C in the presence of red phosphorus, sulphur or iodine. It is decomposed into chloroform and carbon dioxide by boiling water. It is a much stronger acid than either the mono- or the dichloro-acids and has been used to extract alkaloids and ascorbic acid from plant and animal tissues. It is a precipitant for proteins and may be used to test for the presence of albumin in urine. The sodium salt is used as a selective weedkiller. 

To limit the content in the steel of phosphorus, sulphur and tramp elements such as copper, nickel and chromium. ... 

Reactions of carbon subsulphide and of elementary phosphorus, sulphur and selenium with complexes of the platinum metals Sulphur dioxide insertion reactions of transition metal alkyls and related complexes... 

The acticm of acids, halogens and halogen-releasing agents, as well as phosphorus, sulphur and other inorganic halide reagents was carefully investigated. OYP cal laboratory parameters in the treatment of impure trifluralin with various acids follow. 

The white phosphorus/sulphur mixture either combusts or detonates when it is heated. It forms diphosphorus pentasulphide. Red phosphorus reacts with more difficulty there is a need for an ignition flame and as a result of which the mixture combusts violently. This reaction is thought to lead to tetraphosphorus trisulphide. 

It also detonates in the presence of phosphorus, sulphur and carbon monoxide. With a chlorine/phosphorus pentachloride mixture the resulting detonation was explained by the hypothetical formation of chlorine monoxide. 

Rodriguez-Otero, J. L., Paseiro, P., Simal, J., and Cepeda, A. (1994). Mineral content of the honeys produced in Galicia (north-west Spain). Food Chem. 49,169-171. Rodriguez-Otero, J. L., Paseiro, P., Simal, J., Terradillos, L., and Cepeda, A. (1995). Silicon, phosphorus, sulphur, chlorine and ash contents of Spanish commercial honeys. Z. Lebensm. Unters. Forsch. 200, 233-234. 

It is seen by examination of Table 1.11(b) that a wide variety of techniques have been employed including spectrophotometry (four determinants), combustion and wet digestion methods and inductively coupled plasma atomic emission spectrometry (three determinants each), atomic absorption spectrometry, potentiometric methods, molecular absorption spectrometry and gas chromatography (two determinants each), and flow-injection analysis and neutron activation analysis (one determinant each). Between them these techniques are capable of determining boron, halogens, total and particulate carbon, nitrogen, phosphorus, sulphur, silicon, selenium, arsenic antimony and bismuth in soils. 

Perhaps all the elements present in the periodic table might be excited to yield respective emission spectra by employing a huge energetic source. However, it has a serious drawback because most of the spectral lines invariably fall within the vacuum-ultraviolet region thereby rendering their critical studies rather difficult. Hence, the emission spectroscopy is exclusively limited to metals and metalloids. The non-metals, for instance Phosphorus, Sulphur, Carbon etc. are not limited to these studies. 

Becker G, Becker W, Knebl R, Schmidt H, Hildenbrand U, Westerhausen M (1987) Phosphorus Sulphur 30 349 Becker G, Becker W, Knebl R, Schmidt H, Weber U, Westerhausen M (1985) Nova Acta Leopaldina 59 55 Binger P (1990) In Regitz M, Scherer OJ (eds) Multiple bonds and low coordination in phosphorus chemistry. Thieme, Stuttgart, p 100... 

The bromides of phosphorus, sulphur, selenium, arsenic, and similar compounds furnish hydrogen bromide when treated with water—e.g. PBr3+3H20=H3P03 +3HBr. Hydrogen bromide is also obtained by the joint action of bromine, water, and phosphorus.0... 

What products form when disubstituted sodium and ammonium-sodium orthophosphates are roasted What orthophosphates are used as fertilizers Compare the strength of the oxyacids of phosphorus, sulphur, and chlorine, and also of nitrogen and phosphorus. 

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