Light vapor

Because of the variations in the quality of crude oils, the flash point of any crude oil it must be tested, however because most crude oils contain a quantity of light vapors they are considered in a low flash point classification. In atmospheric burning heavy smoke production normally occurs. 

Finally, the receiver will accumulate any noncondensable (or hard-to-condense) components that have accidentally entered the system. Air left in the vessels on start-up is one such example. Traces of methane and ethane in a propane refrigerant system is another. These light vapors may be vented from the top of the receiver during normal operations. 

All the principal chemical agents used in the war met this requirement except hydrocyanic acid, the vapor of which was only 0.93 times a> hca T lit consequence of its light vapor, this subtftanco prov[Pg.190]

When freshly prepared, acrolein is a clear liquid of greenish yellow color and pungent odor, with a specific gravity of 0.84 at 15 C. It boils Jit 52 C. (125.6"F.), yielding a light vapor only 1,9 times heavier than air, is very unstable, and is easily oxidized into acrylic acid. Even when... 

Boudreau and Cooper showed that adsorptive energy distributions can be computed directly from chromatograms (38)- Their method is similar in principle to the present analysis, except for the use of an adsorption isotherm equation that provides an analytical solution for Equation 15. This simplification, which describes all adsorption isotherms as if they occur below the two-dimensional critical temperature 7 c = 0.60 (6), speeds computation of the histogram. Its practical effect is to broaden the energy scale artificially, however, particularly when light vapors are used to characterize low energy, homogeneous substrates. 

Properties Colorless, oily liquid characteristic odor and taste rapidly becomes brown on exposure to air and light. Vapors will contaminate foodstuffs and damage textiles. D 1.0235, solidifies at -6.2C, bp 184.4C, wt/gal 8.52 lbs (20C), refr index 1.5863 (20C), flash p 158F (70C) (CC), autoign temp 1140F (615C). Soluble in alcohol, ether, and benzene soluble in water. 

Phenylhydrazine (CAS 100-63-0) A strong base and corrosive upon direct contact. A potent skin sensitizer. Dermal absorption occurs. Vapors very irritating to eyes and respiratory tract. May cause hemolytic anemia with secondary kidney damage. Limited evidence of carcinogenicity in test animals. 0.1 ppm, S,A3 NIOSH CA 15 ppm 3 2 0 Pale yellow crystals or oily liquid with a weakly aromatic odor. Darkens upon exposure to air and light. Vapor pressure is less than 0.1 mm Hg at 20°C (68°F). Combustible. Thermal-breakdown products include oxides of nitrogen. 

The diameter of the column is calculated in the normal way by using the Tray Sizing feature. The result is a diameter of 11.1 ft. The composition of the LIGHTS vapor stream from reflux dmm is given in Table 11.5. Most of the light hydrocarbons that are in the crude oil feed streams are removed in this vapor steam. They are sent to downstream units for separation into individual components. 

Precaution Flamm. reacts with oxidizing or reducing agents incompat. with alcohols, acids forms explosive mixts. with air or oxygen unstable dec. on exposure to air and light vapor may flash back container explosion may occur under fire conditions Hazardous Decomp. Prods. Toxic fumes of CO, CO2, NOx... 

Small vent stream of inert or light vapors leaving the reflux drum... 

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