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Internationally recommended values of the Fundamental Physical Constants
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COMAR helps you find a suitable certified reference material (CRM) for your laboratory. For a large number of materials offered worldwide we have produced data sheets and collected them in the COMAR database. You can browse and search the database at no cost. What is not included in the database are reference materials that come without a certificate.
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3
The web version of the Handbook of Chemistry and Physics contains all of the documents and tables present in the printed edition in a fully searchable and interactive web application.
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Open-access collection of crystal structures of organic, inorganic, metal-organic compounds and minerals, excluding biopolymers.
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5
This database provides structural information on all of the Zeolite Framework Types that have been approved by the Structure Commission of the International Zeolite Association. It is searchable and includes: descriptions and drawings of each framework type, user-controlled animated displays of each framework type, crystallographic data and simulated powder diffraction patterns for representative materials, relevant references, detailed instructions for building models, descriptions of some families of disordered zeolite structures.
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7
ICDS (Inorgaic Crystal Structure Database) is a comprehensive database on the complete structural information for inorganic compounds. It contains bibliographic information, compound name, molecular formular, as well as crystal symmetry group, unit cell parameters, atomic coordinates and temperature factors.
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8
This database is a unique resource that provides more extensive symmetry information than can be found in the print editions of International Tables for Crystallography Volumes A and A1. This additional symmetry information can either be retrieved directly from the database or simple calculations can be carried out using the database to generate specific data 'on the fly'. Use of the symmetry database thus facilitates the in-depth study of group-subgroup relations, domain structures and twinning, families of related crystal structures and phase transitions, and the prediction of new crystal structures.
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9
The Lund/LBNL Nuclear Data Search provides on-line access to data from the Table of Isotopes handbook. Data may be accessed via radiation or nuclide searches. Radiation searches may be conducted on several levels, from the more general (energy and energy type -- alpha or gamma), to the more specific (parent information, such as half-life, mass number, or element). Search returns are listed alphabetically or by energy and intensity.
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MatWeb's searchable database of material properties includes data sheets of thermoplastic and thermoset polymers such as ABS, nylon, polycarbonate, polyester, polyethylene and polypropylene; metals such as aluminum, cobalt, copper, lead, magnesium, nickel, steel, superalloys, titanium and zinc alloys; ceramics; plus semiconductors, fibers, and other engineering materials.
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