Chemical Science International Journal <p style="text-align: justify;"><strong>Chemical Science International Journal&nbsp;(ISSN:&nbsp;2456-706X)&nbsp;</strong>aims to publish&nbsp;high quality papers (<a href="/index.php/CSIJ/general-guideline-for-authors">Click here for Types of paper</a>)&nbsp;in all aspects of chemical science. The journal also encourages the submission of useful reports of negative results. This is a quality controlled,&nbsp;OPEN&nbsp;peer reviewed, open access INTERNATIONAL journal.</p> SCIENCEDOMAIN international en-US Chemical Science International Journal 2456-706X Synthesis, Crystal Structure and Interaction with Bovine Serum Albumin (BSA) of Two α-Aminophosphonic Acids Derivatives <p>Two α-amino-phosphonate derivatives (<strong><em>1</em></strong> &amp; <strong><em>2</em></strong>) were synthesized and their compositions and structures were characterized by Elemental Analysis (EA), FT-IR Spectrascopy (FT-IR), Electrospray Ionization Mass Spectrometry (ESI-MS), Nuclear Magnetic Resonance (NMR, <sup>1</sup>H, <sup>13</sup>C and <sup>31</sup>P) and X-ray crystallography. Compound <strong><em>1</em></strong> &amp; <strong><em>2</em></strong> were crystallized in monoclinic system with the space group P2(1)/n and P2(1)/c, respectively. The interaction effects of two α-aminophosphonate derivatives (<em>1</em> &amp; <em>2</em>) with BSA were investigated and the binding constants were 1.07 × 10<sup>4</sup> M<sup>-1</sup>, 1.68 × 10<sup>4</sup> M<sup>-1</sup>, respectively. Besides, the values of n were indicated that 1:1 complex was formed between BSA and 1&amp;2.</p> Wei Huang Wen-Ling Wang ##submission.copyrightStatement## 2019-11-12 2019-11-12 1 7 10.9734/CSJI/2019/v28i330138 Investigation of Selected Heavy Metals Concentration in Animal Feeds in United Arab Emirates <p>The animal feed materials contaminated with heavy metals, which usually comes from soils to plant, atmosphere and contaminated seawater. Various animal feed and feed supplements imported by local agents at United Arab Emirates (UAE) subjected for analysis using ICP- MS technique the concentration of the four selected heavy metals, namely; Arsenic (As), Lead (Pb), Cadmium (Cd), and mercury (Hg), found to be within the national standard.</p> Nizar A. Al Haj Ali Ideisan I. Abu-Abdoun Abdulla S. Janaan Jumana H. Hassan Maha A. Al Jeaidi ##submission.copyrightStatement## 2019-11-13 2019-11-13 1 6 10.9734/CSJI/2019/v28i330139 Eliminating the Pre-exponential Factor in Classical Nucleation Theory <p>Blander and Katz give a formula in classical nucleation theory, J = A exp K, for homogeneous nucleation (liquid--&gt;gas). Jennings proved that dlnA/dK = 1/6K for all pure liquids by combining two theories, taking the limit as polymer concentration--&gt;0. This gives lnA = (1/12)ln(K<strong><sup>2</sup></strong>) + C, where C is the integration constant. The conjecture is that C is a constant for fluids of low molecular weight.&nbsp; We used data for 7 sample solvents, and solved for C. The surface tension drops out in C, which makes C more accurate, as the surface tension is difficult to get at 0.89T<strong><sub>c</sub></strong>, the limit of superheat. T<strong><sub>c</sub> </strong>= critical point in Kelvin. All quantities are evaluated at the limit of superheat, which is approximately 0.89T<strong><sub>c</sub></strong> for solvents. C = 74.77 ± 0.33 for the 7 solvents (not all alkanes). This eliminates the prefactor A, streamlining J: ln J = (1/12)ln(K<strong><sup>2</sup></strong>) + 74.77 + K is the exact new equation.&nbsp; A computer can more easily be used to calculate J, the nucleation rate.</p> John H. Jennings ##submission.copyrightStatement## 2019-12-05 2019-12-05 1 6 10.9734/CSJI/2019/v28i330140