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Topic: Docosane


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Surface tension of decane binary and ternary mixtures with eicosane, docosane and tetracosane
A tensiometer operating on the Wilhelmy plate method was employed to measure liquid-vapor interfacial tensions of 3 binary and one ternary mixtures of decane with eicosane, docosane and tetracosane.
Binary mixtures n-C10H22 + n-C20H42, n-C10H22 + n-C22H46 and n-C10H22 + n-C24H50 and the ternary n-C10H22 + n-C20H42 + n-C24H50 were measured from 293.15 K (or above the solution melting temperature) up to 343.15 K. An average absolute deviation of 1.3 % was obtained against pure component literature data.
www.boulder.nist.gov /div838/trc/journals/jced/2005v50/i03/2005quecac0.xml   (123 words)

  
 The Ternary System (n-Heptane + Docosane + Tetracosane): The Solubility of Mixtures of Docosane and Tetracosane in ...   (Site not responding. Last check: 2007-10-16)
In this paper experimental data on the solid-liquid and solid-solid equilibria in the binary system (docosane + tetracosane) and solid solubility data in the ternary system (heptane + docosane + tetracosane) are presented.
Solid disappearance temperatures were measured for 14 mixtures of docosane and tetracosane dissolved in various quantities of heptane.
The experimental results reveal that the solubility curves found in the ternary system correspond to the phase behavior of the binary subsystem studied.
pubs.acs.org /cgi-bin/abstract.cgi/jceaax/1997/42/i03/abs/je960332c.html   (250 words)

  
 STS-95 Payload: Cryogenic Thermal Storage Unit (CRYOTSU)
The PCUEP is constructed of an aluminum shell and a carbon fiber core filled with a wax-like phase change material known as docosane.
When the high-power component is turned on, the docosane melts and the component temperature stays relatively constant.
When the high-power component is turned off, the docosane freezes and the component temperature, again, stays relatively constant.
www.shuttlepresskit.com /sts-95/payload12.htm   (1545 words)

  
 NAMS 2003: Program   (Site not responding. Last check: 2007-10-16)
The influence of the fluid flow rate in the NF cell on the permeate flux was evaluated, using different solute concentrations.
The experimental results suggested existence of a strong concentration polarisation effect in the case of TOABr solutions, while in the case of docosane the concentration polarisation effect was negligible.
A second set of experiments was performed to examine the dependence of flux on the applied pressure, keeping the fluid flow rate in each cell constant.
www.che.utoledo.edu /nams/2003/viewpaper.cfm?ID=347   (607 words)

  
 Characterization of phytochemicals stimulatory to sexual reproduction in Phytophthora cactorum and P. parasitica
Among them, the two non-digitonide TLC bands were further separated by high performance liquid chromatography (HPLC), and the active fractions were isolated for gas chromatography-mass spectrometry (GC-MS) analysis.
Compounds identified were 3-eicosyne, b-farnesene, tetradecane (2, 6, 10-trimethyl), docosane, hexadecanol (2-methyl), phytol, and pentatriacontane.
Since phytol is a common plant natural product, its presence was further confirmed by comparing the GC retention time and mass spectrum with those of a commercial standard (Aldrich), and its oospore stimulatory activity was selected for further study.
ejournal.sinica.edu.tw /bbas/content/2002/3/bot433-05.html   (3634 words)

  
 Technical Program Paper Detail - AIChE
Solute concentrations were varied in the range 0-20 wt% (0-0.35M) for TOABr in toluene and 0-20 wt% (0-0.6M) for docosane in toluene.
A second set of experiments was performed to examine the dependence of flux on the applied pressure, keeping the fluid flow rate in the cell constant.
An interesting phenomenon was observed; the permeate flux for docosane solutions could be described reasonably well with the simple pressure-flux model using the Van't Hoff equation to calculate the osmotic pressure.
www.aiche.org /conferences/techprogram/paperdetail.asp?PaperID=1003&DSN=Annual03   (730 words)

  
 APS - 2005 APS March Meeting PostDeadline - Event - Growth of Flat Au(111) Surfaces on Mica for Ellipsometric, AFM and ...   (Site not responding. Last check: 2007-10-16)
As a first check, docosane (n-C$_{22}$H$_{46})$ films were deposited from a heptane (n-C$_{7}$H$_{16})$ solution onto the gold surface.
We conducted ellipsometric and stray light intensity measurements on these films in air as a function of temperature in order to determine their optical thickness and surface roughness.
Further study of these flat gold surfaces is necessary to assure their suitability for alkane film studies by synchrotron x-ray scattering.
meetings.aps.org /Meeting/MAR05/Event/28127   (220 words)

  
 Chemistry: The Central Science Chapter 25 -- Current Topics   (Site not responding. Last check: 2007-10-16)
Docosane is the official name for the twenty-two carbon alkane.
Write both the molecular formula and the structural formula of this alkane.
Based on this formula of docosane, draw out the structural formula for the carboxylic acid docosanoic acid.
cwx.prenhall.com /bookbind/pubbooks/brown/chapter25/essay1/deluxe-content.html   (614 words)

  
 Thermoresponsive polymer membrane for the local delivery of drugs
Such an implant can be applied in clinical situations in which it is desirable to release drug only on demand, such as erectile dysfunction.
Methods: A porous polyethylene (PE) membrane was modified by fillings its pores with either docosane or a docosane:eicosane mixture.
The melting transition of the alkanes corresponds to a diffusional switch, thus, the alkane melting point corresponds to the membrane release trigger temperature.
www.pulsus.com /Sex/01_01/cng_ed.htm   (648 words)

  
 The CRYOTSU payload aboard the STS-95 mission, scheduled to launch on Oct. 29, from Kennedy Space Center in Florida, ...
The primary use for the Phase Change Upper End Plate is in maintaining the thermal stability of high power components that need to be intermittently turned on and off.
The Phase Change Upper End Plate is constructed of an aluminum shell and a carbon fiber core filled with a wax-like PCM known as docosane.
On the Cryogenic Thermal Storage Unit Flight Experiment mission, the Phase Change Upper End Plate is an integral part of the overall thermal control system for the flight experiment.
www.gsfc.nasa.gov /gsfc/missions/sts95/cryotsu.htm   (1532 words)

  
 Docosane Encyclopedia Article, History, Biography @ Local Color Art   (Site not responding. Last check: 2007-10-16)
Find the Best Sites For docosane With Starware - Starware search is an excellent resource for quality sites on docosane and much more!
Find docosane - Your relevant result is a click away!
Look for docosane - Find docosane at one of the best sites the Internet has to offer!
www.karr.net /search/encyclopedia/Docosane   (228 words)

  
 Amazon.com: docosane   (Site not responding. Last check: 2007-10-16)
vs 72, ctc, ace 4611 Docosane C221-1,5 629-97-0 310.600 pl(to), cry...
vs bz, ctc, ace 4611 Docosane C22H46 629-97-0 310.600 pl(to), cry...
The straight- chain hydrocarbons docosane, tricosane, tetracosane, and pentacosane from...
www.amazon.com /s?ie=UTF8&keywords=docosane&tag=lexico&index=blended&link_code=qs&page=1   (1021 words)

  
 High Temperatures - High Pressures   (Site not responding. Last check: 2007-10-16)
Speed of sound, density, and compressibilities of liquid eicosane and docosane at various temperatures and pressures
The speed of sound has been measured in eicosane and docosane at temperatures from 323 to 393 K up to 150 MPa by a pulse technique working at 3 MHz.
The speed of sound data, combined with atmospheric density measurements, were then used to evaluate the density and the isentropic and isothermal compressibilities in the same range of temperature and pressure.
www.hthpweb.com /php/onlineaccess.phtml?jrnid=ht&page=paper&paperid=781&year=2001&issue=3&fpage=371&lpage=378   (112 words)

  
 Definition of docosane - Merriam-Webster Online Dictionary
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Learn more about "docosane " and related topics at Britannica.com
Find more about "docosane " instantly with Live Search
m-w.com /dictionary/docosane   (31 words)

  
 Solubility of Docosane in Heptane   (Site not responding. Last check: 2007-10-16)
We are grateful to FAPESP (Fundation to Support Research in Sao Paulo State) for financing this project.
The solubility of docosane in heptane has been determined in the range of (277.25-317.65) K. The effect of ultrasonic waves in the solubility was studied.
The results can be fitted with high accuracy to the relationship log
pubs.acs.org /cgi-bin/abstract.cgi/jceaax/2001/46/i06/abs/je010032h.html   (137 words)

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