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Topic: Pentane

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  Safety (MSDS) data for pentane
Click here for data on pentane in student-friendly format, from the HSci project.
The information on this web page is provided to help you to work safely, but it is intended to be an overview of hazards, not a replacement for a full Material Safety Data Sheet (MSDS).
If not, this page is a copy made by some other person and we have no responsibility for it.
physchem.ox.ac.uk /MSDS/PE/pentane.html   (259 words)

  Gas Detector Calibration: Crowcon Detection Instruments: Gas Facts
Most flammable gas detectors are calibrated 0-100% LEL methane or 0-100% LEL pentane and SECTION 4 describes the use of CORRECTION FACTORS for measuring other gases and vapours which are known to be present.
Pellistor sensors are about twice as sensitive to methane as to pentane and these two calibrations are therefore convenient to use.
Pentane and other flammable liquids, which readily vaporise can be used to produce dilute mixtures with air by using plastic (Tedlar) bags available from Crowcon.
www.crowcon.com /talking_gas_detector_calibration.htm   (898 words)

  Lesson Learned: Discovery in Soot Testing
To sample for soot load, a pentane and toluene coagulated insolubles test (ASTM D893) was run on the sample and results indicated less than 1 percent solids in the sample.
To understand why the results of the pentane and toluene coagulated insolubles test did not coincide with TGA and membrane filtration tests, it is important to know how each test is performed and understand the underlying theories.
Upon speaking to the laboratory personnel, it was discovered that when the pentane insolubles test was run, the additives (dispersants) in the oil appeared to have kept the soot suspended in the sample.
www.practicingoilanalysis.com /article_detail.asp?articleid=651&relatedbookgroup=OilAnalysis   (917 words)

 Vapor Pressure: Molecular Size
Pentane, hexane and heptane differ only in the length of their carbon chain, and have the same type of intermolecular forces, namely London dispersion forces.
Pentane, hexane and heptane differ only in the length of their carbon chain, and have the same type of intermolecular forces, namely dispersion forces.
Pentane, the smallest of the three, is injected (into the open end of the barometer, it rises to the top) and vaporizes.
jchemed.chem.wisc.edu /JCESoft/CCA/CCA2/MAIN/VAPORES5/CD2R1.HTM   (464 words)

 Nuclear Waste Program-YMP Laboratory Tests
For example, in Figure 1, pentane (a volatile liquid) was introduced into a fracture model composed of a sheet of flat glass glued on the edges to a sheet of obscure glass which had been roughened by sandblasting.
The bottom portion is submerged in a heated bath with the temperature exceeding the pentane boiling temperature by about 1.3 C. The brightest regions are where pentane saturates the aperture, the next brightest regions are where pentane is present as a thick film on the glass.
Small flows of pentane evaporate prior to reaching the "drifts", and the condensing pentane forms a condensation halo on the top, sides, and bottom of the warmed region.
www-esd.lbl.gov /NW/lab_tests/heatdrive.html   (533 words)

 The Virtual FormGuide - AAP - O'Sullivan Cleared Over Pentane Charge
O'Sullivan was charged for failing to report a condition which may have affected the performance of a horse under his care after Pentane's surprise failure in the $1 million Kelt Capital Stakes at Hastings on October 7.
O'Sullivan's counsel, however, argued that the condition Pentane had was extremely common and was not regarded as likely to have affected his race performance.
Shaw said Pentane raced poorly at his next start, the Geelong Cup in Australia, after which further diagnostic work found "a low grade respiratory condition that may be a more logical contribution to the horse's form".
www.virtualformguide.com /cgi-bin/tvf/displaynewsitem.pl?20061127osullivancleared.txt   (474 words)

 The Virtual FormGuide - AAP - 'Lightweight' Pentane Backed Heavily
Bookmakers have a weathered a barrage of support for New Zealand stayer Pentane and fear it may get worse after he was pitch-forked in to the Melbourne Cup with just 52kg.
The winner of the Auckland Cup in March, Pentane has been backed from $161 and is as short as $15 with some betting agencies.
Gary Davies at TAB Sportsbet agreed that Pentane was easily the best backed horse for the Melbourne Cup and has shortened him from $26 to $17 after bets up to $5000 each-way.
www.virtualformguide.com /cgi-bin/tvf/displaynewsitem.pl?20060904lightweightpentane.txt   (380 words)

 The Australian: Pentane ready to return in Geelong [ 23oct06 ]   (Site not responding. Last check: 2007-11-05)
He thought everything was on track with Pentane this spring, until the gelding put in an ordinary effort to the $880,000 Kelt Capital Stakes (2000m) at his most recent, start on October 7.
And O'Sullivan made sure Pentane was back to square one by putting the gelding through his paces before giving the all-clear for Pentane to leave his Matamata stables for Melbourne.
Pentane travelled over with Envoy, another Melbourne Cup entry, who is also entered for Geelong but is not expected to run.
www.theaustralian.news.com.au /printpage/0,5942,20626803,00.html   (622 words)

 Insulation boards bridge to the 21st century | January 2003 | Professional Roofing Magazine
Pentane compounds were chosen as the blowing agents to replace HCFC-141b.
However, we were confident pentanes could be used safely and cost-effectively to produce polyisocyanurate boards that meet North American requirements because pentanes have been used to make polyurethane foam insulation boards in western Europe since 1992.
Pentane board performance in a variety of 2-inch- (51-mm-) thick boards is outlined in Figure 2 relative to boards made with HCFC-141b.
www.professionalroofing.net /article.aspx?A_ID=199   (3479 words)

 GFG - Worldwide Supplier Of Gas Detection Solutions: Pentane
The principle depends on the effect Pentane Pentane - GFG - Worldwide Supplier Of Gas Detection Solutions that different gases have different conductivity for heat.
Portable instruments are divided into two different categories: Single-Gas Detectors, for detection of one gas # Multi-Gas Detectors, for detection Pentane of several gases at a time Multi-Gas Detectors Multi-Gas detectors monitor several gases simultaneously, increasing employees safety with a compact instrument.
Pentane Hydrogen sulfide multi gas detector personnel safety stand alone gas detection Trichloroethane gas detection solutions Refrigerants Butane
www.gfg-gasdetection.com /pentane.html   (229 words)

 Green Statement
These pentane isomers all have different physical properties and it is important to note that the blowing agent used by ASI is a highly efficient blend of the aforementioned pentane isomers developed, with the new generation of polyols, to meet the needs of the market from a performance standpoint.
Other pentane considerations include workplace safety as related to precautions in mitigating flammability risks of HC blowing agents during the production process, which is not related to end user application.
The pentane blowing agent, as used by ASI, is considered a VOC reportable per EPA requirements on pollution equipment control during manufacturing.
www.alumashield.com /GS   (1530 words)

 Documentation for Immediately Dangerous to Life or Health Concentrations (IDLHs) - 109660
The narcotic effect of gasoline and its components: pentane, hexane, heptane, octane.
Odor intensity and symptoms produced by commercial propane, butane, pentane, hexane, and heptane vapor.
The relative anaesthetic activity of the butanes and pentanes.
www.cdc.gov /niosh/idlh/109660.html   (327 words)

 Dyplast Products Newsletter
Since pentane isomers each have different physical properties it is important to note the characteristics of different PIR brands may vary.
The most common pentane blowing agents used in the manufacture of polyisocyanurate rigid foam are combinations of one or more N-pentane, Iso-pentane, and C-pentane.
For this reason, the EPA lists pentane, as a suitable replacement for hydro-chlorofluorocarbons (HCFC’s) which are considered harmful to the stratosphere.
www.dyplastproducts.com /newsletter/index1.htm   (1518 words)

 Solutions to Chapter7
The temperature of the normal pentane stream is increased in the heater to the optimum reactor temperature and pressure, and it is fed to the reactor along with hydrogen.
The unreacted normal pentane is recycled to the heater as shown on the diagram.
The conversion of normal pentane to isopentane is controlled by the reactor temperature and pressure as is the amount of other hydrocarbons produced by side reactions.
www.mpri.lsu.edu /textbook/Chpt7-b.htm   (1673 words)

 Pentane and Propane Metathesis
Crossed-molecular-beam scattering is at the forefront of experimental means of investigating the fundamental reactive encounters in metathesis reactions, in which a single atom is transferred from a stable molecule to an atom or radical.
Berkeley Lab researchers are exploiting a unique combination of intense, tunable VUV synchrotron radiation with the crossed-beam technique on Beamline 9.0.2 at the ALS to yield important new insights into the dynamics of hydrogen transfer (abstraction) when chlorine reacts with the saturated hydrocarbons pentane and propane.
The insights from the dramatic differences observed in the dynamics of pentane as compared to propane reactions will help build the foundation for developing accurate computer models of practical combustion systems.
www-als.lbl.gov /als/science/sci_archive/pentane.html   (288 words)

 Product data - Shell Chemicals   (Site not responding. Last check: 2007-11-05)
If you need Adobe PDF files in an accessible format, you can use their online conversion tool (opens in a new window) which turns Adobe PDF files into either text or HTML documents that can be read by many access technologies.
Pentane 60/40 is a blend of 60% n-pentane and 40% isopentane.
Pentane 80/20 is a blend of 80% n-pentane and 20% isopentane.
www.shellchemicals.com /paraffins/1,1098,668,00.html   (480 words)

 Alliance of Foam Packaging Recyclers - EPS Meets the Challenge
The EPA classified pentane, one of the chief blowing agents used to expand EPS, EPP and EPE beads, as a volatile organic compound (VOC).
Under new CAA regulations, pentane emissions had to meet strict reduction targets, beginning in 1993.
Coughanour explains that many molders have solved the problem by making use of pentane emission systems that capture the pentane gas as it is released during the manufacturing process.
www.epspackaging.org /ainnovations.html   (1277 words)

 Hennecke GmbH - machines and plants for polyurethane processing - Refrigerated appliance lines
Pentane pump feeding gas to the PENTAMAT system
Vacuum extraction systems must be fitted at critical points to capture potential pentane emissions.
Machinery and equipment such as the PENTAMAT station and work tank, as well as the HK-P series high-pressure reaction moulding unit, are fully enclosed and fitted with extraction systems, pentane gas sensors and other safety devices.
www.hennecke.com /hennecke/kuehl4a_e.htm   (234 words)

 Ship And Shore Enviromental Inc.- Products   (Site not responding. Last check: 2007-11-05)
Provide a safe environment since Pentane is highly explosive, if not properly handled.
The RTO model is designed for facilities that have steam boiler and need to collect Pentane and provide abatement for large flows.
Provide for low concentration Pentane in high exhaust flows such as a completely enclosed facility.
www.shipandshore.com /products/eps.htm   (283 words)

 Pentane Vapor Monitor / Monitoring Badge - EMT
EMT's Pentane Monitoring Kit includes one vapor monitor / monitoring badge, detailed instructions, a monitoring information form, and a shipping label.
They are designed to provide you with the ability to check exposure levels to Pentane.
NIOSH Recommended exposure limit (REL) for pentane is 120 ppm TWA, 610 ppm Ceiling (15 min)
www.emt-online.com /ProductPages/Pentane.htm   (151 words)

 Chemical Safety Data: Pentane
Remove any contaminated clothing immediately - clothing soaked in pentane will present an extreme fire risk, so must be removed without delay.
Store it temporarily in an area in which it cannot catch light or lead to a build-up of pentane vapour.
If gloves are required, nitrile or PVA are suitable.
ptcl.chem.ox.ac.uk /~hmc/hsci/chemicals/pentane.html   (191 words)

 Creative Chemistry Interactive Molecular Models - Chain Isomers
You also meet it again in AS/A Level Chemistry.
I have put models of the chain isomers of pentane here.
I have chosen these because they are typical of the sort of molecules you meet in GCSE and at AS/A Level.
www.creative-chemistry.org.uk /molecules/chain.htm   (162 words)

Ingredient CAS No Percent Hazardous --------------------------------------- ------------ ------------ --------- Pentane 109-66-0 98 - 100% Yes
Carbon dioxide and carbon monoxide may form when heated to decomposition.
When released into the soil, this material may biodegrade to a moderate extent.
www.jtbaker.com /msds/englishhtml/p0737.htm   (1172 words)

 News - Exhaled Pentane May Be an Effective Breath Test for Cystic Fibrosis: Presented at ERS
Assessment of cystic fibrosis is challenging because one of its features, chronic inflammation, is shared by other respiratory conditions, said principal investigator Michael Barker, MD, consultant physician in pediatrics and pulmonology, University of Aachen, Aachen, Germany.
After identifying an average intra-subject coefficient of variation of 18%, the investigators subtracted inhaled pentane concentrations from breath levels to determine alveolar gradients.
Exhaled pentane was significantly correlated with lung function as defined by forced expiratory volume in 1 second (FEV
www.docguide.com /news/content.nsf/news/852571020057CCF6852571E3006C40A2   (378 words)

 Environmental Expert.com. Microbiological degradation of pentane by immobilized cells of Arthrobacter sp.   (Site not responding. Last check: 2007-11-05)
Microbiological degradation of pentane by immobilized cells of Arthrobacter sp.
The immobilized microorganism was able to actively degrade a 10% mixture of pentane, allowing us to obtain a bioconversion yield of 90% after 36h.
cells were able to maintain 85—95% pentane degradation during a 2month period.
www.environmental-expert.com /resulteacharticle4.asp?cid=6063&codi=4889   (276 words)

 Exhaled Pentane and Nitric Oxide Levels in Patients with Obstructive Sleep Apnea
Among the controls, there was no difference between morning and evening samples of pentane, but an increased level of oral (not nasal) nitrous oxide in the morning.
No pentane was detectable in the room air before or after sleep, but higher level of nitrous oxide were found in the room air after sleep than before.
Elevated pentane levels result from membrane fatty acids being oxidized; pentane is readily excreted by the lung.
www.talkaboutsleep.com /sleep-disorders/archives/Snoring_apnea_abstract19.htm   (821 words)

 Amazon.com: Pentane's   (Site not responding. Last check: 2007-11-05)
Characterization of dynamic adsorption of pentane on silica gel by Riley Byran Needham (Unknown Binding - 1965)
On the pentane standard and a new form of photometer by A. Vernon Harcourt (Unknown Binding - 1883)
The infra-red absorption spectrum of pentane by George Alfred Stinchcomb (Unknown Binding - 1939)
www.amazon.com /s?ie=UTF8&keywords=Pentane's&tag=lexico&index=blended&link_code=qs&page=1   (342 words)

 Exhaled pentane levels in acute asthma -- Olopade et al. 111 (4): 862 -- Chest
Exhaled pentane levels in acute asthma -- Olopade et al.
OBJECTIVE: To determine whether exhaled pentane levels are increased in acute asthma, and
Exhaled pentane levels were similar in patients with stable asthma and
www.chestjournal.org /cgi/content/abstract/111/4/862   (586 words)

 Racing: Poor Pentane heading home - 27 Oct 2006 - Sport News - New Zealand Herald   (Site not responding. Last check: 2007-11-05)
Trainer Lance O'Sullivan made the decision to bring the talented stayer back to New Zealand after a disappointing effort in Wednesday's A$150,000 Geelong Cup.
In what was to be his final Melbourne Cup lead-up, Pentane settled back last in running and passed a handful of beaten horses in the home straight.
Pentane, the winner of this year's Auckland Cup, had been heavily backed to win the Melbourne Cup almost from the start of betting.
www.nzherald.co.nz /section/story.cfm?c_id=4&objectid=10407749   (335 words)

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