Costa Rica Top Sites for Chemistry

    Dynamic Periodic Table

    Interactive periodic table with dynamic layouts showing names, electrons, oxidation, trend visualization, orbitals, isotopes, and compound search. Full descriptions from write-up sources.

    Royal Society of Chemistry

    The RSC is the largest organisation in Europe for advancing the chemical sciences. Supported by a worldwide network of members and an international publishing business, its activities span education, conferences, science policy and the promotion of chemis

    Chemical Portal

    Online chemistry tools, forums, unit converters, symmetry tables, periodic table and chemical constants.

    Alonso Formula

    Formulación de química inorgánica y orgánica.


    Free chemical structure search engine with millions of public domain structures from vendors worldwide.

    Silviamar: from Chemistry to life

    Homepage of Silvia Martinez about chemistry for chemists and for everybody, pictures of my trips and my favourite links to spanish poems, html courses and mind games.

    Home page

    Our product line consists of chemical solutions prepared to exact quality standards and certified for use in laboratories and production processes. We regularly produce chemical solutions to specifications designed by government and regulatory bodies, com

    Chemical Forums

    Discussion boards for all areas of chemistry, at levels ranging from high school to graduate school and practicing chemists. Site also includes web directory, periodic table, articles, and reference tables.

    American Chemistry Council

    Represents the American chemical industry. Information about the Responsible Care initiative, news articles, press releases, research and testing, and public health.

    Chemical Industry Supplier DIrectory

    Online searchable directory of chemical suppliers enabling buyers to easily source manufacturers for price and capacity of commodity and specialty chemicals by name or CAS registry number. Site includes free magazines, jobs, news and events.

    Química Explicada

    Descubre la naturaleza de la materia que te rodea. Adéntrate en el increíble mundo de la química.


    Free chemistry search engine which aggregates and indexes chemical structures and their associated information into a single searchable repository. and its sister site are owned and authored by myself.