International Journal of Chemistry February, 2010 1 Contents Synthesis, Characterization and Crystal Structure of Gallosilicate Perchlorate Sodalite 3 Ashok V. Borhade, Arun G. Dholi & Sanjay G. Wakchaure Studies on the Effect of Base Metal Composition in Pulse Plating of Silver over Silver Alloy 14 C.Shanthi, S.Barathan, R.M. Arunachalam & K.Karunakaran Synthesis and Antifungal Activity of Some 6H-thiochromeno[4,3-b]quinolines 19 Ge Wang, Gengliang Yang, Zhengyue Ma, Wei Tian, Baoling Fang & Linbo Li Constant Pressure Molecular Modeling of Six Optimised Titanium Oxide Polymorphs: Metal Oxide Semiconductors 26 M. K. Akindeju, V.K. Pareek, A.L. Rohl, D.J. Carter & M.O Tade Synthesis and Antimicrobial Studies on New Substituted 1,3,4-Oxadiazole Derivatives Bearing 6-Bromonaphthalene Moiety 38 Anil N. Mayekar, H. S. Yathirajan, B. Narayana, B. K. Sarojini & N. Suchetha Kumari Analysis of Volatile Compounds in Food and Cosmetic, Using the Purge and Trap Injector Coupled to a Gas Chromatograph with Photo Ionization Detector 55 Yunfang Zhao, Sheming Lua, Chunbo Liu, Zhaoyu Meng, Chaomin Ni, Qiu’e Cao & Mingming Miao Synthesis and Photostability Study of Some Modified Poly(vinyl chloride) Containing Pendant Benzothiazole And Benzimidozole Ring 65 Emad Yousif, Ayad Hameed, Rashed Rasheed, Hadeel Mansoor, Yang Farina, Abdualbasit Graisa, Nadia Salih & Jumat Salimon Characterization and Evaluation of Thermodynamic Parameters for Egyptian Heap Fired Rice Straw Ash (RSA) 81 Morsi M. Abou-Sekkina, Raafat M. Issa, Alam El-Deen M. Bastawisy & Wael A. El-Helece Immobilization of ȕ-galactosidase from Aspergillus Oryzae on Macroporous PloyGMA Newly Prepared 89 Sufang Sun, Lingyun Dong, Xiaobing Xu & Shigang Shen Chemical Changes in 15 Year-old Cultivated Acacia Hybrid Oil-Heat Treated “at 180, 220 and 220°C” 97 Izyan Khalid, Razak Wahab, Mahmud Sudin, Othman Sulaiman, Affendy Hassan, Roziela Hanim Alamjuri & Andy Russel Mojiol Synthesis of 2-Amino-5-aryl-5,6-dihydro-7-(naphthalen-2-yl) quinazolin-4-ols 108 S. Senguttuvan & S. Nagarajan Preparation of Porous Chitosan Microsphere Absorbent and Research on Its Absorption Ability for Cu2+ and Zn2+ 113 Cuirong Zhang & Zhenyu Jia A Thermal Analysis Study on Blended Ternary Cement Paste 121 R. Nithya, S.Barathan, D.Govindarajan, K.Raghu & N.Anandhan Preparation and Characterization of SSZ-13 Molecular Sieve 128 Yufeng Wang, Yuan Li & Enqi Tang