Search results

From Self-sufficiency
Jump to: navigation, search
  • ...rom the fire in a [[reverberatory furnace]] to prevent harmful sulphur and phosphorus from entering the finished iron. Puddled iron, although also variable in it ...known as ''coldshear'', ''colshire'' or ''bloodshot'', contains excessive phosphorus. It is very brittle when it is cold. It cracks if bent. It may, however, be
    35 KB (5,392 words) - 10:22, 20 September 2010
  • ...e of [[calcium]] and [[iron]]. Whole hempseeds are also a good source of [[phosphorus]], [[magnesium]], [[zinc]], [[copper]] and [[manganese]]. ...to clear impurities out of wastewater, such as sewage effluent, excessive phosphorus from chicken litter, or other unwanted substances or chemicals. Eco-technol
    42 KB (6,310 words) - 22:11, 21 September 2010
  • ...olved in it with small amounts of other impurities like sulfur, magnesium, phosphorus and manganese. As the carbon is the major impurity, the iron (pig iron) bec ...in pig iron that negatively affect material properties, such as sulfur and phosphorus, have been reduced to an acceptable level. It has a [[melting point]] in th
    67 KB (9,808 words) - 10:24, 20 September 2010
  • ...This was then reacted with additional dimethylaniline in the presence of [[phosphorus oxychloride]] and [[hydrochloric acid]].<ref name=patents/>
    21 KB (3,043 words) - 13:13, 20 September 2010
  • Reaction of [[phosphorus pentachloride]] with ethylene oxide produces [[ethylene dichloride]]:<ref n [[Phosphorus trichloride]] reacts with ethylene oxide forming chloroethyl esters of phos
    82 KB (11,709 words) - 21:31, 20 September 2010
  • ...n [[Bern]] in [[Switzerland]] which prohibits the use of white (yellow) [[phosphorus]] in the manufacture of [[matches]]. The treaty also prohibits the import a * John Emsley, ''The Shocking History of Phosphorus: A Biography of the Devil’s Element'' (2000) Macmillan Publishers, Ltd.:
    2 KB (255 words) - 21:32, 20 September 2010
  • *[[Match]]es made with [[phosphorus|white phosphorus]]. | White phosphorus
    21 KB (2,852 words) - 21:33, 20 September 2010
  • ...g|left|thumb|100px| Structure of yellow arsenic As<sub>4</sub> and white [[phosphorus]] P<sub>4</sub>]] Like phosphorus, arsenic exhibits [[allotropy]], although only the gray allotrope is import
    51 KB (7,314 words) - 21:34, 20 September 2010
  • ...and Agriculture|volume = 84|issue = 8|pages =777–785|title = Effects of phosphorus and zinc fertilizer on cadmium uptake and distribution in flax and durum wh
    34 KB (4,743 words) - 21:34, 20 September 2010
  • ...[[ester]]s are formed upon treatment with [[phosphorus trichloride]] and [[phosphorus oxychloride]], [[carbonyl chloride]], and sulphuryl chloride:
    11 KB (1,437 words) - 20:14, 21 September 2010
  • | title = Mechanism of Phosphorus-Carbon Bond Cleavage by Lithium in Tertiary Phosphines. An Optimized Synthe
    5 KB (722 words) - 20:14, 21 September 2010
  • ...ithiolenes entails the reaction of α-hydroxyketones, [[acyloin]]s, with [[phosphorus pentasulfide|P<sub>4</sub>S<sub>10</sub>]] followed by hydrolysis and treat
    9 KB (1,258 words) - 20:15, 21 September 2010
  • ...lize phosphonates as nutrient sources. Some bacteria use phosphonates as a phosphorus source for growth. Aminophosphonates can also be used as sole nitrogen sour ...iciently.<ref>{{cite journal |author=Singh R, Nolan SP |title=Synthesis of phosphorus esters by transesterification mediated by N-heterocyclic carbenes (NHCs) |j
    8 KB (1,135 words) - 20:15, 21 September 2010
  • ...s at least one proton. In this case the proton is attached directly to the phosphorus atom with the structure HPO<sub>3</sub><sup>2&minus;</sup>. In forming this
    15 KB (2,364 words) - 20:16, 21 September 2010
  • ...rally strong Lewis acids, e.g. [[boron trifluoride]], BF<sub>3</sub> and [[phosphorus pentafluoride]], PF<sub>5</sub>. Perhaps the most notable Lewis acid of th
    7 KB (919 words) - 20:17, 21 September 2010
  • [[Image:PdCl2(dppe)-3D-balls.png|thumb|right|220px|The two [[phosphorus]] atoms (orange) of [[1,2-Bis(diphenylphosphino)ethane|dppe]] have a bite a ...metal. The structure of the backbone and the substituents attached to the phosphorus atoms influence the chemical reactivity of the diphosphine ligand in metal
    12 KB (1,706 words) - 20:18, 21 September 2010
  • ...assi, L. Sacconi "Tetradentate Tripod Ligands Containing Nitrogen, Sulfur, Phosphorus, and Arsenic as Donor Atoms" Inorganic Syntheses, 1976, vol. 16 p. 174-180.
    4 KB (584 words) - 20:18, 21 September 2010
  • ...]])[[aluminum|Al]]<sub>6</sub>[([[oxygen|O]][[hydrogen|H]])<sub>4</sub>|([[phosphorus|P]]O<sub>4</sub>)<sub>2</sub>]<sub>2</sub>·4H<sub>2</sub>O) &ndash; Americ ...sup>3+</sup>[([[oxygen|O]][[hydrogen|H]],O)|([[arsenic|As]]O<sub>4</sub>,[[phosphorus|P]]O<sub>4</sub>,[[sulfur|S]]O<sub>4</sub>)]<sub>2</sub>·4[[water|H<sub>2<
    23 KB (3,180 words) - 21:06, 21 September 2010
  • ...ten a limiting [[nutrient]] in many environments; i.e. the availability of phosphorus governs the rate of growth of many organisms. Living cells also use phospha In [[Ecosystem|ecosystems]] an excess of phosphorus can be problematic, especially in aquatic systems, see [[eutrophication]] a
    63 KB (9,050 words) - 21:26, 21 September 2010
  • ...t can undergo alpha-[[halogenation]] with [[bromine]] in the presence of [[phosphorus tribromide|PBr<sub>3</sub>]] as [[catalyst]] (the [[Hell-Volhard-Zelinsky h
    10 KB (1,395 words) - 22:06, 21 September 2010

View (previous 20 | next 20) (20 | 50 | 100 | 250 | 500)