Global warming potentials of greenhouse gases
The 100-year global warming potential (GWP) of each greenhouse gas the U.S. EPA regulates — carbon dioxide, methane, nitrous oxide and about 200 fluorinated gases such as HFCs, PFCs and sulfur hexafluoride — with CAS number, formula and chemical group. One row per gas.
Columns
Stable keys — use them in the API, SQL and code
| Key | Name | Type | Description |
|---|---|---|---|
| name | Gas | string | — |
| cas_number | CAS No. | string | Chemical Abstracts Service registry number. |
| formula | Formula | string | — |
| gwp_100yr | GWP (100-year) | number | Global warming potential over 100 years relative to CO₂. |
| group | Chemical group | string | — |
| last_revised | Last revised | year | Year the value took effect after its latest addition or update by rule. |
More in Chemistry & Materials
Periodic table of the elements
All 118 chemical elements with atomic mass, electron configuration, electronegativity, melting and boiling points, density and year of discovery. One row per element.
Energy levels of neutral atoms: gallium onward (Z 31+)
Energy levels of neutral atoms of the elements from gallium onward (atomic number 31 and up), from the NIST Atomic Spectra Database: each level's electron configuration, term, total angular momentum J and energy above the ground state. One row per level (plus the ionization limits NIST lists).
Energy levels of neutral atoms: hydrogen to zinc (Z 1–30)
Energy levels of neutral atoms of the elements hydrogen through zinc (atomic numbers 1–30), from the NIST Atomic Spectra Database: each level's electron configuration, term, total angular momentum J and energy above the ground state. One row per level (plus the ionization limits NIST lists).
Strong spectral lines of the elements
The strongest emission lines of 99 elements, from hydrogen to einsteinium, as tabulated in NIST's Handbook of Basic Atomic Spectroscopic Data. One row per spectral line: element, ion stage, wavelength, relative intensity and whether it is a persistent line.
Energy levels of singly ionized atoms: gallium onward (Z 31+)
Energy levels of singly charged positive ions (atoms that have lost one electron, e.g. Fe⁺, written Fe II) of the elements from gallium onward (atomic number 31 and up), from the NIST Atomic Spectra Database: each level's electron configuration, term, total angular momentum J and energy above the ion's ground state. One row per level (plus the ionization limits NIST lists).
U.S. mineral commodity statistics since 1900
Yearly U.S. production, imports, exports, apparent consumption and unit price of about 100 mineral and material commodities — metals such as aluminum, copper and lithium, and industrial minerals such as cement, salt and phosphate rock — from 1900, with world production for comparison. One row is one commodity in one year.