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The a, A (omega = 0, 1, 2), B, and C excited states at 681.0, 567.6, and 505.1, and 491.7 nm are observed. The (3)Pi(0)(-) component of the A state is observed for the first time. The CuF luminescence obeys a quadratic power law with 308 nm excitation. The partitioning of excess energy into fragment degrees of freedom is determined from the intensities of the emission …
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Tetrafluoroethane, 1,1,1,2-811-97-2: Vapor >480 >480 >480 >480 >480 >480 > indies greater than. Special Warning from DuPont: Tychem® and Tyvek® fabrics should not be used around heat, flames, sparks or in potentially flammable or explosive environments. Only
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The chemical formula for 1,1,2-trichloroethane is C 2 H 3 Cl 3, and the molecular weight is 133.41. (1) 1,1,2-Trichloroethane is a colorless, sweet-smelling liquid; the odor threshold is not available. (1,5) The vapor pressure for 1,1,2-trichloroethane is 22.49 mm Hg at 25 °C, and it has a log octanol/water partition coefficient (log K ow) of
2005-03-27. 1,1,1,2-tetrafluoroethane appears as a colorless gas with a slight ethereal odor. Vapors are heavier than air. Shipped liquefied under own vapor pressure. Flash point 351°F. Inhalation at high concentrations is harmful and may cause heart irregularities, unconsciousness or death without warning.
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NIOSH/OSHA. Up to 2000 ppm: (APF = 10) Any supplied-air respirator. (APF = 50) Any self-contained breathing apparatus with a full facepiece. Emergency or planned entry into unknown concentrations or IDLH conditions: (APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other
2005-03-26. 1,1,2,2-Tetrachloroethane is a manufactured, colorless, dense liquid that does not burn easily. It is volatile and has a sweet odor. In the past, it was used in large amounts to produce other chemicals, as an industrial solvent to clean and degrease metals, and as an ingredient in paints and pesticides.
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This problem has been solved! Liquid toluene at 25°C and 1.2 bar is converted to vapor at 240°C and 5 bar in a two-step steadyflow process: compression by a pump to 5 bar, followed by vaporization in a counterflow heat exchanger. Determine the power requirement of the pump and the duty of the exchanger in kJ⋅mol−1 .
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H07704-10 6,4 0.25 1/4 12,7 0.50 1/2 8,6 125 62,1 900 76,2 3.00 5,0 11 10 H07705-10 H07705-300 7,9 0.31 5/16 14,3 0.56 9/16 8,6 125 62,1 900 95,3 3.75 5,9 13 10 300 H07706-10 9,2 0.38 3/8 15,9 0.63 5/8 8,6 125 62,1 900 114,3 4.50 7,3 16 10 r r r r r rr Hose Fitting Reference Page Clamps M-24 WEATHERHEAD H366 LPG Hose UL File Nuer MH 6776, ULMH 10198 …
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1/3/2005· Isothermal Vapor–Liquid Equilibrium of the Ternary Mixture of 1,1,1,2-Tetrafluoroethane + 2,3,3,3-Tetrafluoroprop-1-ene + Dimethyl Ether at Temperatures from 253.15 K to 323.15 K Xiaohong Han , Zanjun Gao , Jun Lei , Bo Yang , Yangyang Zhao , …
1,1,1,2-Tetrafluoroethane (also known as norflurane , R-134a, (482 °F) may cause vapor decomposition and the emission of toxic gases including hydrogen fluoride and carbonyl fluoride, however the decomposition temperature has been reported as above 370°C. 1,1,1,2-Tetrafluoroethane itself has an LD 50 of 1,500 g/m 3 in rats, making it relatively non-toxic, …
30/8/2001· The stated scope of the revised Data Sheet 1-29: “This data sheet provides recommendations for the proper design and installation of above-deck roof components. Items covered include roof covers, insulation, vapor retarders, fasteners and recover asselies. This data sheet is intended to be used in conjunction with Data Sheet 1-28, Wind
T1 - Liquid Densities and Vapor Pressures of 1,1,2,2-Tetrafluoroethane (HFC 134) and 1,1-Dichloro-1-fluoroethane (HCFC 141b) AU - Maezawa, Yuklshlge. AU - Sato, Harukl. AU - Watanabe, Kolchl. PY - 1991/4/1. Y1 - 1991/4/1. N2 - Saturated liquid densities and vapor pressures of HFC 134 and HCFC 141b were measured at temperatures from 200 to 400 K by …
27/5/2020· The phase-down of hydrofluorocarbons (HFCs) established by the Kigali Amendment to the Montreal Protocol is leading to the formulation and commercialization of new refrigerant blends containing hydrofluoroolefins (HFOs), such as 2,3,3,3-tetrafluoropropene (R1234yf), and HFCs with moderate global warming potential, namely, difluoromethane (R32) and 1,1,1,2 …
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Abstract. Vapor intrusion of synthetic fuel additives represented a critical yet still neglected problem at sites impacted by petroleum fuel releases. This study used an advanced numerical model to simulate the vapor intrusion risk of lead scavengers 1,2-dibromoethane (ethylene dibromide, EDB) and 1,2-dichloroethane (DCA) under different site
30/1/2019· This article is cited by 2 publiions. Sebastiano Tomassetti, Uthpala A. Perera, Giovanni Di Nicola, Mariano Pierantozzi, Yukihiro Higashi, Kyaw Thu. Two-Phase and Vapor-Phase Thermophysical Property (pvTz) Measurements of the Difluoromethane + trans-1,3,3,3-Tetrafluoroprop-1-ene Binary System.
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Two components A and B have their pure vapor pressures in the ratio 1 ∶ 4 and respective mole fractions in solution in ratio 1 ∶ 2. What is the mole fraction of component B in vapor phase? (a) 0.8889 (b) 0.1250 (c) 0.8000 (d) 0.2000 This question was addressed to …
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View cadf.pdf from CHEM 64655 at Higher Colleges of Technology. 1) The q value of saturated vapor is equal to a. 0 b. 1 c. 0 to 1 d. greater than 1 2) The Height of …
Chem 4300 - Chapter 4 . Note: subscripted m denotes a molar quantity. Chem 4300 - Fall 2009- Take Home 4 . 1. The molar volume of a certain solid is 161.0 cm 3 mol-1 at 1.00 atm and 350.75 K, its melting temperature. The molar volume of the liquid at this temperature and pressure is 163.3 cm 3 mol-1.At 100 atm the melting temperature changes to 351.26 K. Calculate the …