Engineering Chemistry Database

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Engineering Chemistry Database Address: http://www.enginchem.csdb.cn/sdb_2004/main.html The ECDB system was developed by the Institute of Process Engineering, Chinese Academy of Sciences (formerly the Institute of Chemical Engineering and Metallurgy) starting from the late 1970s. Through more than 20 years of unremitting efforts, it has evolved into a comprehensive research, application, and development system platform that integrates inorganic/organic pure compounds, polymers, mixture systems, as well as network computing and process systems. The engineering chemistry database system mainly includes: property and thermochemical databases, pure compound phase transition databases, crystal structure databases, databases on the safety and disposal of chemically hazardous substances, vapor-liquid equilibrium databases for non-electrolyte solutions, blended polymer databases, gas-liquid equilibrium databases for polymer solutions, methane hydrate databases, octane number databases, as well as process engineering network computing application platforms and material design platforms. The entire system has a physical capacity of about 2.5GB and contains over 1 million records. It also implements online inquiry and online assignment functions. Engineering chemistry database systems are primarily used in fields such as the process industry, chemical industry, petroleum industry, materials industry, and metallurgical industry for product design, testing and analysis, process design, safety assessment, process optimization, scale-up, and system integration. Property and Thermochchemical Database >> The Property and Thermochchemical Database contains the thermochchemical properties of gaseous and condensed-state compounds for over 12,000 compounds: heat capacity, standard entropy, and standard enthalpy. It also includes thermochchemical estimation formulas and parameters. This database enables users to perform common thermodynamic calculations as well as phase diagram analyses for inorganic or organic substances. The second part of the physical and thermochemical database is the Wagner model interaction parameter database for liquid Fe or Cu. 　　 Phase transition database >> The Phase Transition Database (PTDB) contains phase transition data for over 18,000 pure compounds, providing basic information on the phase transitions, critical points, and triple points of these pure compounds (including organic and inorganic compounds). Phase transition data includes properties such as boiling point, melting point, freezing point, heat of fusion, heat of vaporization, heat of sublimation, entropy of fusion, entropy of vaporization, and entropy of phase transition ； Critical point data includes properties such as critical temperature, critical pressure, critical volume, critical density, critical compressibility factor, eccentricity factor, and dipole moment ； Triple point data includes the triple point temperature and triple point pressure properties. 　　 Chemical Hazard Safety and Disposal Database >> The Chemical Hazard Safety and Disposal Database (HCSDDB) compiles detailed information on over 18,000 types of chemical hazards. It includes basic data, physical and chemical properties, hazards and emergency handling, combustion and explosion information, health hazards and emergency treatment, etc. The basic data includes the compound’s RTECS number, CAS number, Beilstein number, name, molecular formula, and uses, etc ； Physical and chemical properties include melting point, boiling point, specific gravity, solubility, vapor pressure, vapor density, etc ； Hazard and emergency handling mainly covers the storage, handling, protection of chemical hazards, respiratory protection, stability, incompatibilities, etc. 　　 Cambridge Crystal Database >> The Cambridge Crystal Database (CSD) is compiled and published by the UK-based non-profit organization Cambridge Crystal Data Centre (CCDC). Process serves as the CCDC’s liaison office in China (NAC), handling inquiries and services related to CSD for users in China. The CSD, released in 2003, contains crystal data for approximately 300,000 small molecules (mostly organic molecules). It offers various methods for searching the database, such as substructure search, author search, molecular formula search, and crystal parameter search. CSD includes not only the crystal structure of compounds but also 2D and 3D structures of molecules, making it a very important tool for studying crystal structures, organic synthesis, and chemical analysis. 　　 Natural gas hydrate database >> The main purpose is to systematically collect and organize data on natural gas hydrates, thereby creating a database that can support research on the extraction and application of natural gas hydrates, and provide the necessary scientific data to facilitate research on natural gas hydrates as well as the formulation of energy and environmental policies. Currently, the natural gas hydrate database consists of three parts: a crystal structure database, a physicochemical properties database, and a phase equilibrium database. 　　 Vapor-liquid equilibrium database for non-electrolyte systems >> The Vapor-Liquid Equilibrium Database for Non-Electrolyte Systems (NEDB) contains 189,000 sets of experimental data on vapor-liquid equilibrium for binary to quaternary mixture systems involving approximately 1,000 organic compounds, along with more than 3,000 parameters for activity coefficient models. The 21 activity coefficients of NEDB can be used for phase diagram calculations. The gas-liquid phase equilibrium database for non-electrolyte systems has won the Second Prize for Scientific and Technological Progress from the Chinese Academy of Sciences as well as the Third Prize in Natural Sciences. This library is widely used in scientific research, process development, and engineering design in the fields of chemical and petrochemical separation engineering. 　　 Blended Polymer Compatibility Database >> The data contained in the Blended Polymer Compatibility Database (PBDB) includes information such as the properties of the polymer components, the preparation and composition of the blended polymers, measurement methods, descriptions of compatibility, and data sources. These data are fundamental for studying the modification of polymer materials and the development of blended polymer materials. In addition to providing general data retrieval, the blended polymer compatibility database also offers comprehensive data retrieval services by polymer category. The most direct users of the blended polymer compatibility database are the research and development of polymer materials. 　 　 Polymer solution vapor-liquid equilibrium database >> The Polymer Solution Phase Equilibrium Database (PSDB) mainly includes data on the vapor-liquid and liquid-liquid equilibria of polymer solutions, as well as data on activity coefficients of infinitely dilute solutions.