Interactive periodic table with up-to-date element property data collected from authoritative sources. Look up chemical element names, symbols, atomic masses and other properties, visualize trends, or …

PubChem is the world's largest collection of freely accessible chemical information. Search chemicals by name, molecular formula, structure, and other identifiers. Find chemical and physical properties, …

GHS, the Globally Harmonized System of Classification and Labeling of Chemicals, was developed by the United Nations as a way to bring into agreement the chemical regulations and standards of …

Explore how density changes with atomic number in the periodic table of elements via interactive plots.

Explore how atomic mass changes with atomic number in the periodic table of elements via interactive plots.

Explore how boiling point changes with atomic number in the periodic table of elements via interactive plots.

Chemical element, Manganese, information from authoritative sources. Look up properties, history, uses, and more.

Elements PubChem has summary pages specific to chemical elements, and a periodic table. Periodic Table As we mark the 150th anniversary of the periodic table, the scientific community has declared …

Cocaine is a tropane alkaloid obtained from leaves of the South American shrub Erythroxylon coca. It has a role as a central nervous system stimulant, a sympathomimetic agent, an adrenergic uptake …

Chemical element, Aluminum, information from authoritative sources. Look up properties, history, uses, and more.