Here, the "traffic" profile is characterized by the "lingering exhaust" fingerprints, consisting of a strong presence of volatile 2-methylpentane in the air, but also of low-volatility cyclopentane
. The specialty gasoline component, 2,3,4-trimethylpentane, is also present.
hexane and cyclopentane
, 4-methyl- are present in good percentage among the major compounds in case of catalytic oil which are absentamong the major components in case of thermal oil.
The first discovered class of isoprostanes included the [F.sub.2]-IsoPs, named according to the type of cyclopentane
Compound Rt (a) Content % Cyclopentane
, 1,1-dimethyl- 5.021 0.294 Isoterpinolene 6.123 1.181 3-Carene 6.511 1.015 [alpha]-Pinene 6.674 4.46 Camphene 7.005 31.047 [beta]-Pinene 7.598 6.766 [beta]-Myrcene 7.929 26.774 1,8-Cineole 8.758 11.348 Linalool 10.18 0.442 Camphor 11.077 15.41 Borneol 11.491 0.452 Iso-Bornyl acetate 13.659 0.274 [beta]-Caryophyllene 15.963 0.537 (b) Rt(Retention time) Table 2: Chemical composition of Artemisia aucheri Boiss.
Tracer ID Location Release Normalized Rate Rate * (nL/min) Ortho-perfluoro, o-PDCH Indoor atrium 1.5 1 dicyclohexane Perfluoro, PMCH North designated 7.1 4.6 methyl, smoking area cyclohexane Perfluoro, PMCP South designated 11.4 7.4 methyl, smoking area cyclopentane
Iso-perfluoro, i-PPCH North unofficial 2.6 1.7 propyl, Smoking area cyclohexane Perfluoro, PTCH South unofficial 2.0 1.3 trimethyl, smoking area cyclohexane #1--outdoor seating Perfluoro, PDCB South unofficial 10.4 6.8 dimethyl, smoking area cyclobutane #2--north wing exit * The emission rate from the different sources is normalized to the rate of the indoor source o-PDCH.
Manit Narang: One of our main green initiatives is that we use cyclopentane
as a blowing agent for our foam.
Pollutant category Pollutants Inert (nonaromatic, Cyclopentane
, methylcyclopentane, nonalkane) methylcyclohexane, sulfur, EC, CO, N[O.sub.2] Polar (nonaldehyde) Acetic acid, 2-butanone, organic carbon Aromatic Benzene, toluene, ethylbenzene, m-xylene and p-xylene, o-xylene, n-propylbenzene, p-ethyltoluene, m-ethyltoluene, 1,3,5-trimethylbenzene, 1,2,4-trimethylbenzene and sec-butylbenzene Aldehyde Benzaldehyde, heptanal, hexanal, octanal Alkane 2,2,4-Trimethylpentane, 2,2-dimethylbutane, 2,3,4-trimethylpentane, 2,3-dimethylbutane.
It is also described as a safe and environmentally friendly alternative to foams blown with fluorocarbons or cyclopentane
. Tel: (800) 221-3626 * www.bayerbms.com
Session 4 on foaming polyurethanes will include the following presentations: "HFC blowing agents for rigid insulation foams," Lotbar Zipfel and Christoph Meurer, Solvay Fluor, Germany; "Recent developments in the use of HFC-245fa blowing agent for rigid polyurethane foam," Saskia Walraedt, Honeywell, Belgium; "New developments in applications of methylal as blowing agent for rigid, flexible, integral skin and microcellular polyurethane foams," Michel Beaujean, Lambiotte & Cie, S.A., Belgium; "Pentane spray system: An effective and safe technology," Claudio Chittolini and Valentina Robles, Ediltec Srl, Italy; and "Cell structure and thermal conductivity of rigid polyurethane foams blown with cyclopentane
in different molds," Aleksander Prociak, Cracow University of Technology, Poland.
Summary: The report introduces the current scenario of the market for cyclopentane
. The executive summary section of the report offers information regarding the future scope of the global cyclopentane