PubChem 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, biological activities, safety and toxicity information, patents, literature citations and more
Periodic Table of Elements - PubChem 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 even test your elements knowledge by playing a periodic table game!
PERIODIC TABLE OF ELEMENTS - PubChem PERIODIC TABLE OF ELEMENTS Chemical Group Block 17 Atomic Number Cl Symbol Chlorine Name Halogen Chemical Group Block 1 H Hydrogen Nonmetal 1 1 2 He Helium Noble Gas
GHS Classification Summary - PubChem Note: This page provides the current GHS summary Obsolete [(marked as) deleted in GHS Rev 10 2023 PDF document] H-codes and P-codes are also provided, as they are still in use but annotated as obsolete For more information, please see the References This is the permanent link to the GHS 2023 (Rev 10) summary Please also see the previous GHS 2021 (Rev 9) summary and GHS 2019 (Rev 8) summary
PERIODIC TABLE OF ELEMENTS - PubChem PERIODIC TABLE OF ELEMENTS Electronegativity 17 Atomic Number Cl Symbol Chlorine Name 3 16 Electronegativity (Pauling Scale) 1 H Hydrogen 2 2 1 1 2 He Helium 18
Ammonia | NH3 | CID 222 - PubChem Ammonia | NH3 or H3N | CID 222 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety
Hydrocodone | C18H21NO3 | CID 5284569 - PubChem Extended-release capsules of hydrocodone bitartrate are used for the relief of pain that is severe enough to require long-term, daily, around-the-clock use of an opiate analgesic Because of the risks of addiction, abuse, and misuse associated with opiates, even at recommended dosages, and because of the greater risks of overdose and death associated with extended-release opiate formulations
Tin | Sn (Element) - PubChem Chemical element, Tin, information from authoritative sources Look up properties, history, uses, and more
Elements - PubChem PubChem has summary pages specific to chemical elements, and a periodic table
Nitroglycerin | C3H5 (NO3)3 | CID 4510 - PubChem Nitroglycerin, also known as glyceryl trinitrate, is an organic nitrate and a vasodilating agent that was first discovered in 1847 Originally used to dynamite, its antianginal effects were identified in the late 1860s after it produced headaches in factory workers while workers with angina pectoris or heart failure experienced relief from chest pain