Apparent densities

Suspension Polymers. Methacrylate suspension polymers are characterized by thek composition and particle-size distribution. Screen analysis is the most common method for determining particle size. Melt-flow characteristics under various conditions of heat and pressure are important for polymers intended for extmsion or injection molding appHcations. Suspension polymers prepared as ion-exchange resins are characterized by thek ion-exchange capacity, density (apparent and wet), solvent sweUing, moisture holding capacity, porosity, and salt-spHtting characteristics (105). 

Zirconium Tetra-n-butylate. Zirconium tetra- -butoxide [1071-76-7] Zr(OC4H2)4 mol wt 383.7, is a colorless soHd, melting point, 134°C (95). The commercial product contains about 28% Zr02 and butanol it is a yellow-brown Hquid, density (apparent), d ° = 1.07 g/mL solidification point below —70°C bp, 260°C at 10 Pa (0.075 mm Hg) flammable, flash point 21°C soluble in hydrocarbons. 

Type Bulk density. Apparent 20°C 1260°C Refractoriness Linear reheat... 

Bulk density Apparent density of bulk solids, kg m". ... 

Density, apparent The weight in air of a unit volume of material including voids usually inherent in the material. Also used is the term bulk density that is commonly used for materials such as molding powders. 

TKPP Cone. Density Apparent Plastic Yield Point... 

Powder, color Density, apparent, g/cc Density, pressed at at 20000 psi Ballistic Mortar Blast Effects Brisance by Sand Test, g sand crushed Brisance for TNT Detonation Rate... 

The next step is the detn of gravimetric density (apparent specific gravity) of a cartridge. 

For porous solids such as coal, there are five different density measurements true density, apparent density, particle density, bulk density, and in-place density. The true density of coal is the mass divided by the volume occupied by the actual, pore-free solid in coal. However, determining mass of coal may be deemed as being rather straightforward, but determining volume presents some difficulties. Volume, as the word pertains to a solid, cannot be expressed universally in a simple definition. Indeed, the method used to determine volume experimentally, and subsequently, the density, must be one that applies measurement rules consistent with the adopted definition. 

The dependence of Kss on sorbed SDS levels appears to be qualitatively consistent with proposed surfactant structures at mineral surfaces (Fuerstenau and Wakamatsu, 1975 Holsen et al., 1991 Chandar et al., 1987). For example, the configuration of adsorbed SDS in Region I is expected to be different from that in Regions II and III, where micelle-like structures are thought to exist at these relatively higher sorption densities. Apparently, these differences in sorbed surfactant structure that result from regional sorption mechanisms and sorption densities lead to regional differences in Kss values. 

Tap density Apparent powder density obtained under stated conditions of tapping (BSI) ... 

A comparison of true particle density, apparent particle density, and bulk density can provide information on total porosity, interparticle porosity, and intraparticle porosity. Methods include true particle density measurements via helium pycnometry, mercury intrusion porosimetry, and poured and tapped bulk density. 

BOX 4.8 Measurement of Swollen Resin Density Apparent Resin Density... 

Tapped bulk density Apparent density Average grain size ... 

In spite of low tapped bulk density, apparent density of FRP powder is not low compared with silica sand. Therefore FRP powder itself can not make BD of hydrated composite much lighter. 

ASTM C373-88. (2006) Standard Test Method for Water Absorption, Bulk Density, Apparent Porosity, and Apparent Specific Gravity of Fired Whiteware Products, American Society for Testing Materials. 

Density Apparent coefficients (Cw) of widthwise dimensional change (%) ... 

Density, Apparent 1) A measure of the weight of carbon that can be contained in a given volume under specified conditions 2) The weight per unit volume of activated carbon. 

Bulk density and real density Apparent density For estimation of the filter packing volume Important for flow characteristics of the activated ... 

Pfiesteria species can also be grown axenically on fish cell lines [76] and grown to high densities apparently in the absence of bacteria and algal prey. This is not unique to Pfiesteria spp. species... 

---