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  • toluene
  • p-Cresol is currently prepared industrially mainly by a two step route beginning with the sulfonation of toluene: CH3C6H5 + H2SO4 → CH3C6H4SO3H + H2O Base hydrolysis of the sulfonate salt gives the sodium salt of the cresol: CH3C6H4SO3Na + 2 NaOH → CH3C6H4OH + Na2SO3 + H2O Other methods for the production of p-cresol include chlorination of toluene followed by hydrolysis. (wikipedia.org)
  • pitch
  • The heating or partial burning of wood to make charcoal yields tar as a byproduct and is an ancient method for the production of both tar and pitch. (encyclopedia.com)
  • By the application of heat, tar is separated into several materials, one of which is pitch. (encyclopedia.com)
  • The terms tar and pitch are loosely applied to the many varieties of the two substances, sometimes interchangeably. (encyclopedia.com)
  • For example, asphalt, which is naturally occurring pitch, is called mineral tar and mineral pitch. (encyclopedia.com)
  • Pitch is used in the manufacture of roofing paper, in varnishes, as a lubricant, and as a binder for coal dust in the making of briquettes used as fuel. (encyclopedia.com)
  • Following the passage of this law and subsequent acts, annual shipments of pitch and tar from the colonies to Great Britain increased from less than one thousand barrels to more than eighty-two thousand barrels. (encyclopedia.com)
  • aromatic
  • Alongside tar-based products, our Aromatic Chemicals line also manufactures two synthesis products, Acetophenone and 3.5-Xylenol at our RÜTGERS facilities. (raincarbon.com)
  • At our state-of-the-art RÜTGERS plant in Castrop-Rauxel, Germany, our Aromatic Chemicals business line uses a highly innovative, high temperature melting crystallization process for the solvent-free extraction of polycyclic aromatics such as anthracene and carbazole from coal tar. (raincarbon.com)
  • vessels
  • Tar made vessels watertight and protected their ropes from deterioration. (encyclopedia.com)
  • Professor Jan Pieter Minckeleers lit his lecture room at the University of Louvain in 1783 and Lord Dundonald lit his house at Culross, Scotland, in 1787, the gas being carried in sealed vessels from the local tar works. (wikipedia.org)
  • growth
  • When ships were made of wood, tar had numerous uses, and an available supply of tar was an important factor in maritime growth. (encyclopedia.com)
  • This present patent application pertains to the use of a coal tar formulation to help sustain the hair shaft's growth cycle in the anagen phase and assist in the formation of new shafts by inhibiting the conversion of testosterone to dihydrotestosterone. (hairloss-research.org)
  • Applications
  • An initial comparative study of published findings on alopecia and review of coal tar applications for dermatological disease treatment revealed no explanation for the activity cited above to i.e., the inhibition of the conversion of testosterone to dihydrotestosterone. (hairloss-research.org)
  • liquid
  • Depending on the temperature, cresols can be solid or liquid because they have melting points not far from room temperature. (wikipedia.org)
  • production
  • Historically, coal was gasified using early technology to produce coal gas (also known as "town gas"), which is a combustible gas traditionally used for municipal lighting and heating before the advent of industrial-scale production of natural gas. (wikipedia.org)
  • High Temperature Coal Tar Production Concentrates in North China and East China. (chinamarketresearchreports.com)
  • solution
  • For example, polyaniline is cast from a solution of m -cresol to form a polyaniline film with a superior conductivity than polyaniline alone. (wikipedia.org)
  • However, the study of the co-enzymes required for this reaction, namely the interaction of 5a-reductase and NADP (nicotinamide adenine dinucleotide phosphate) revealed a mechanism of action that would explain lower levels of DHT is patients regularly applying the coal tar solution. (hairloss-research.org)
  • water
  • This equipment may cause damage for a carpets as it's not powerful enough to extract all of the water and cleaning fluid, abandoning wet carpets. (theinnovationcenter.org)
  • Important
  • During the era of wooden ships, tar retained an important place in manufacturing and trade statistics, especially in North Carolina. (encyclopedia.com)
  • fluid
  • Tar is more or less fluid, depending upon its origin and the temperature to which it is exposed. (encyclopedia.com)