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.
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 market.