Specific gravity, handbook

Source Molecular weight, specific gravity, individual gas constant, and specific heat values were abstracted from, or based on, data in Table 24 of Mark s Standard Handbook for Mechanical Engineers (7th ed.). 

Fig. 17-5. Hydrate-forming conditions for natural gases. Symbols A through E represent gases of increasing specific gravity. (From Handbook of Natural Gas Engineering by Katz et al. Copyright 1959 by McGraw-Hill Book Company. Used with permission of McGraw-Hill Book Company.)...

Total residence time in a bank of cells may range from 4 to 14 min. A table of approximate capacities of several makes of flotation cells for a pulp with 33% solids of specific gravity = 3 is given in the Chemical Engineers Handbook (McGraw-Hill, New York, 1984, p. 21.49) on an average, an 8-cell bank with 4-min holdup has a capacity of about 1.5 tons solid/(hr) (cuft of cell) and a power requirement of about 0.6HP/(cuft of cell). 

Related Calculations. For liquids heavier than water, S = 145/(145— Be). When the SSU viscosity is greater than 100 s, k = 0.220 SSU — 135/SSU. Use these relations for any liquid—brine, gasoline, crude oil, kerosene, Bunker C, diesel oil, etc. Consult the Pipe Friction Manual and King and Crocker—Piping Handbook for tabulations of typical viscosities and specific gravities of various liquids. 

Specific gravities of solids and liquids were discussed in Sections 3.1 and 3.2. Values for several substances at a single temperature are listed in Table B.l in Appendix B, and more extensive tabulations can be found in Perry s Chemical Engineers Handbook on pp. 2-7 through 2-47 and 2-91 through 2-120. 

Material Strength or Mechanical Properties. The U.S. FPL Wood Handbook (1) provides a starting point to determine the generic range of properties. Actual properties inherent to the artifact s fabric should be analyzed whenever possible, however, to establish a more accurate data base. In particular, determination of density, or specific gravity (essentially a factor of the Sg layer thickness), is important it relates directly to the homogeneous material s mechanical and physical properties. 

In earlier editions of the Handbook of Chemistry and Physics (CRC Press), percent composition and specific gravity data for solutions of many common reagent solutions are given. Let us take, for example, pairs of values for aqueous hydrochloric acid (%HC1, sp gr at 25°C) from the Handbook and copy the data into Quattro, and then calculate the molarity, molality and mole fraction of HCl for each of these solutions. 

Cf. The Handbook of Chemistry and Physics (CRC Press) for Tables of Specific Gravities of Common Aqueous Solutions. 

FIGURE 6.20 Relationship of specific gravity of a magnetite suspension to concentration in water. (From Meyers, R.A., Ed., Coal Handbook, Marcel Dekker, New York, 1981, p. 268.)... 

Barium Sulfates n (barites, blanc fixe, heavy spar, permanent white, terra ponderosa) BaS04. A white powder obtained from the mineral barite or synthesized chemically. One of the synthetic varieties, hlanc fixe, is made by mixing aqueous solutions containing sulfate and barium ions. As a filler in plastics and rubbers, barium sulfate imparts opacity to X rays but only a low order of optical opacity. Thus it is useful as a filler when it is desired to increase specific gravity without adversely affecting the tinctorial power of pigments. (Ash M, Ash I (1998) Handbook of fillers, extenders and dilutents. Synapse Informtion Resources, Inc., New York). 

This is clearly a word to be used with care in any filtration and sedimentation context. It is used in this Handbook only in the general sense when unmodified, so that the term separator means any form of physical separation equipment. The term only has a specific meaning when preceded by a modifier magnetic separator , lamella separator , or, as is mainly the case in this section, gravity separator or sedimenting separator . 

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