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A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z). [ 1 ] The definitive visualisation of all 118 elements is the periodic table of the elements , whose history along the principles of the periodic law was one of the founding ...
This is the list of extremely hazardous substances defined in Section 302 of the U.S. Emergency Planning and Community Right-to-Know Act (42 U.S.C. § 11002).The list can be found as an appendix to 40 CFR 355. [1]
For an oxygen-containing refrigerant (an ether), the prefixed capital letter "E" is used. [1]: §4 There are separate numbering schemes for zeotropic and azeotropic blends, organic chemicals which don't fit into the scheme above, and inorganic chemicals: Zeotropic blends are numbered starting with 400.
This list is sorted by boiling point of gases in ascending order, but can be sorted on different values. "sub" and "triple" refer to the sublimation point and the triple point, which are given in the case of a substance that sublimes at 1 atm; "dec" refers to decomposition. "~" means approximately.
alpha-Tocopherol (Vitamin E) 5-20 × 10 −6: Transcortin: male 1.5-2 × 10 −5: female 1.6-2.5 × 10 −5: Transferrin: newborn 1.3-2.75 × 10 −3: adult 2.2-4 × 10 −3: age >60 yrs 1.8-3.8 × 10 −3: Triglycerides: 8.5-23.5 × 10 −4: 2.5-30 × 10 −4: Triiodothyronine: free 2.3-6.6 × 10 −12: total (T3) 0.75-2.50 × 10 −9 ...
This is an index of lists of molecules (i.e. by year, number of atoms, etc.). Millions of molecules have existed in the universe since before the formation of Earth. Three of them, carbon dioxide, water and oxygen were necessary for the growth of life. Although humanity had always been surrounded by these substances, it has not always known ...
Antipsychotics by class Generic name Brand names Chemical class ATC code Typical antipsychotics; Acepromazine: Atravet, Acezine: phenothiazine: N05AA04
Chemical substance – Form of matter; List of alchemical substances; List of chemical elements; List of minerals – List of minerals with Wikipedia articles; List of named alloys; List of straight-chain alkanes; Polyatomic ion – Ion containing two or more atoms; Exotic molecule – a compound containing one or more exotic atoms