the feasibility of extractive reaction of methacrylic acid from aqueous solution using a quaternary amine, tri–octyl methyl ammonium chloride (tomac) as an extractant, was studied. the diluents chosen in the present work belong to different chemical classes, n–butyl acetate, carbon tetrachloride, isoamyl alcohol, methyl isobutyl ketone, and toluene. the effect of initial acid concentration in t...

Solvent extraction as environmental benign separation technique can be modeled in physical detail by population balance of the droplet size distribution. However, much information on generation and coalescence is necessary for representative results. In this contribution, we present a comparison AI-evaluated experimental simulated data behavior stirred solvent column with an inner diameter 32 m...

In the title benzamide derivative, C(11)H(14)ClNO, the chloro-benzene and butyl-amine groups are each planar, with mean deviations from the planes of 0.013 and 0.030 Å, respectively, and a dihedral angle of 2.54 (9)° between the two planes. In the crystal structure, N-H⋯O hydrogen bonds link mol-ecules in rows along a. Short inter-molecular Cl⋯Cl inter-actions [3.4225 (5) Å] link these rows int...

The structures of three novel compounds prepared from the reaction of the lower-rim 1,3-diacid calix[4]arene (LH(2)) with lithium carbonate (1), t-butyl-lithium (2) and zinc acetate (3) are reported.

      Butyl-hydroxytoluene (BHT) is one of the major synthetic antioxidants with a wide range usage. Replacement of artificial antioxidants with natural antioxidants is highly considered. In this research, the antioxidant activity of Juniperus excelsa was investigated by using reducing power, DPPH radical scavenging and inhibition of lipid peroxidation. Also, the amounts of phenolic an...

We describe the design and simulated response of a dust logger consisting of a downward-pointing phototube, ~2 m below side-directed light-emitting diodes (LEDs), attached to a cable that can lower the device down a 3-in. (7.5-cm) borehole filled with butyl acetate. LED photons that enter the ice are scattered or absorbed by dust grains, and those that reach the phototube provide a measure of d...

In the centrosymmetric title compound, [Cu(2)(C(21)H(30)N(3)O)(2)(C(2)H(3)O(2))(2)], each Cu atom has a distorted tetra-hedral coordination geometry defined by N and O atoms in a chelate ring, N of an imidazole ring, and an acetate O atom. The uncoordinated acetate O atom is disordered over two sites with occupancies 0.7:0.3.

1.1.3 Chemical and physical properties of the pure substance From American Conference of Governmental Industrial Hygienists (1991) unless otherwise noted. (a) Description: Colourless, flammable liquid (b) Boiling-point: 145°C (Lide, 1997) (c) Melting-point: –64.6°C (Lide, 1997) (d) Solubility: Very slightly soluble in water (0.14% at 20°C); soluble in ethanol, diethyl ether and acetone (e) Vapo...