standard conditions for gases

https://doi.org/10.1351/goldbook.S05910
Temperature, \(273.15\ \text{K}\) (\(0\ ^{\,\unicode{x26ac}}\text{C}\)) and pressure of \(10^{5}\) pascals. IUPAC recommends that the former use of the pressure of 1 atm as @S05921@ (equivalent to \(1.01325\times 10^{5}\ \text{Pa}\)) should be discontinued.
See:
STP
Source:
PAC, 1990, 62, 2167. (Glossary of atmospheric chemistry terms (Recommendations 1990)) on page 2216 [Terms] [Paper]
Citation: 'standard conditions for gases' in IUPAC Compendium of Chemical Terminology, 3rd ed. International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. https://doi.org/10.1351/goldbook.S05910 RIS BibTex EndNote
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Last revised: February 24, 2014